Download Epson SCI 7661 Series Specifications
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MF302-10 L A NU L C TE H A NIC MA NOTICE No part of this material may be reproduced or duplicated in any from or by any means without the written permission of Seiko Epson. Seiko Epson reserves the right to make changes to this material without notics. Seiko Epson does not assume any liability of any kind arising out of any inaccuracies contained in this material or due to its application or use in any product or circuit and, further, there is no repersesnation that this material is applicable to products requiring high level reliability, such as, medical products. Moreover, no license to any intellectual property rights is granted by implication or otherwise, and there is no representation or warranty that anything made in accordance with this material will be free from any patent or copyright infringement of a third party. This material or portions thereof may contain technology or the subject relating to strategic products under the control of the Foreign Exchange and Foreign Trade Low of Japan and may require an export licenes from the Ministry of International Trade and Industry or other approval from another government agency. HD44103 is a registered trademark of Hitachi, Ltd. All other product names mentioned herein are trademarks and/or registered trademarks of their respective companies. ©Seiko Epson Corporation 1999 All rights reserved. al u an lM c Te h a nic Contents Introduction .......................................................................................................................................................................... 1 Selection Guide .................................................................................................................................................................... 2 1. DC/DC Converter SCI7660 Series DESCRIPTION .......................................................................................................................................................... 1–1 FEATURES ............................................................................................................................................................... 1–1 APPLICATIONS ........................................................................................................................................................ 1–1 BLOCK DIAGRAM .................................................................................................................................................... 1–1 PIN CONFIGURATION ............................................................................................................................................. 1–1 PIN DESCRIPTION ................................................................................................................................................... 1–1 SPECIFICATIONS .................................................................................................................................................... 1–2 FUNCTIONAL DESCRIPTION .................................................................................................................................. 1–7 TYPICAL APPLICATIONS ........................................................................................................................................ 1–8 2. DC/DC Converter & Voltage Regulator SCI7661 Series DESCRIPTION .......................................................................................................................................................... 2–1 FEATURES ............................................................................................................................................................... 2–1 APPLICATIONS ........................................................................................................................................................ 2–1 BLOCK DIAGRAM .................................................................................................................................................... 2–1 PIN CONFIGURATION ............................................................................................................................................. 2–2 PIN DESCRIPTION ................................................................................................................................................... 2–2 SPECIFICATIONS .................................................................................................................................................... 2–3 FUNCTIONAL DESCRIPTION ................................................................................................................................ 2–11 TYPICAL APPLICATIONS ...................................................................................................................................... 2–12 SCI7654 Series DESCRIPTION ........................................................................................................................................................ 2–15 FEATURES ............................................................................................................................................................. 2–15 APPLICATIONS ...................................................................................................................................................... 2–15 BLOCK DIAGRAM .................................................................................................................................................. 2–16 PIN DESCRIPTION ................................................................................................................................................. 2–16 ELECTRICAL CHARACTERISTICS ....................................................................................................................... 2–19 EXPLANATION OF FUNCTIONS ........................................................................................................................... 2–22 CHARACTERISTICS GRAPHICS .......................................................................................................................... 2–29 APPLICATION CIRCUIT EXAMPLES .................................................................................................................... 2–30 SCI7000 Series Technical Manual EPSON i Contents 3. Voltage Regulator SCI7810Y Series DESCRIPTION .......................................................................................................................................................... 3–1 FEATURES ............................................................................................................................................................... 3–1 BLOCK DIAGRAM .................................................................................................................................................... 3–1 MODEL CLASSIFICATION ....................................................................................................................................... 3–2 PIN DESCRIPTION ................................................................................................................................................... 3–2 DESCRIPTION OF FUNCTION ................................................................................................................................ 3–3 ABSOLUTE MAXIMUM RATING .............................................................................................................................. 3–4 ELECTRIC CHARACTERISTICS ............................................................................................................................. 3–5 EXAMPLES OF APPLIED CIRCUITS ..................................................................................................................... 3–12 SCI7910Y Series DESCRIPTION ........................................................................................................................................................ 3–14 FEATURES ............................................................................................................................................................. 3–14 APPLICATIONS ...................................................................................................................................................... 3–14 LINE-UP .................................................................................................................................................................. 3–14 BLOCK DIAGRAM .................................................................................................................................................. 3–14 PIN CONFIGURATION ........................................................................................................................................... 3–14 PIN DESCRIPTION ................................................................................................................................................. 3–15 SPECIFICATIONS .................................................................................................................................................. 3–15 PACKAGE MARKINGS ........................................................................................................................................... 3–28 FUNCTIONAL DESCRIPTION ................................................................................................................................ 3–28 TYPICAL APPLICATIONS ...................................................................................................................................... 3–29 4. DC/DC Switching Regulators SCI7630 Series SCI7631, SCI7638 Series DESCRIPTION ................................................................................................................................................ 4–1 FEATURES ..................................................................................................................................................... 4–1 APPLICATIONS .............................................................................................................................................. 4–1 LINE-UP .......................................................................................................................................................... 4–1 BLOCK DIAGRAMS ........................................................................................................................................ 4–2 PIN CONFIGURATIONS ................................................................................................................................. 4–3 PIN DESCRIPTIONS ....................................................................................................................................... 4–3 SPECIFICATIONS ........................................................................................................................................... 4–4 PACKAGE MARKINGS ................................................................................................................................. 4–13 FUNCTIONAL DESCRIPTION ...................................................................................................................... 4–13 ii EPSON SCI7000 Series Technical Manual Contents TYPICAL APPLICATIONS ............................................................................................................................ 4–15 SCI7633 Series DESCRIPTION .............................................................................................................................................. 4–21 FEATURES ................................................................................................................................................... 4–21 APPLICATIONS ............................................................................................................................................ 4–21 LINE-UP ........................................................................................................................................................ 4–22 BLOCK DIAGRAMS ...................................................................................................................................... 4–22 PIN CONFIGURATIONS ............................................................................................................................... 4–22 PIN DESCRIPTIONS ..................................................................................................................................... 4–22 SPECIFICATIONS ......................................................................................................................................... 4–23 PACKAGE MARKINGS ................................................................................................................................. 4–25 FUNCTIONAL DESCRIPTION ...................................................................................................................... 4–26 TYPICAL APPLICATIONS ............................................................................................................................ 4–27 5. Voltage Detector SCI7720Y Series DESCRIPTION .......................................................................................................................................................... 5–1 FEATURES ............................................................................................................................................................... 5–1 MODEL GROUPS ..................................................................................................................................................... 5–2 BLOCK DIAGRAM .................................................................................................................................................... 5–3 PIN DESCRIPTION ................................................................................................................................................... 5–4 DESCRIPTION OF FUNCTION ................................................................................................................................ 5–4 ABSOLUTE MAXIMUM RATINGS ............................................................................................................................ 5–5 ELECTRIC CHARACTERISTICS ............................................................................................................................. 5–6 EXAMPLES OF EXTERNAL CONNECTION .......................................................................................................... 5–19 SAMPLE CIRCUITS (SCI7721Y SERIES) .............................................................................................................. 5–20 SAMPLE CIRCUITS (SCI7720Y SERIES) .............................................................................................................. 5–21 PRECAUTIONS ...................................................................................................................................................... 5–22 6. Appendix ORDERING INFORMATION ..................................................................................................................................... 6–1 CMOS LSI LINEUP ................................................................................................................................................... 6–2 ABSOLUTE MAXIMUM RATINGS ............................................................................................................................ 6–3 RECOMMENDER OPERATING CONDITIONS ....................................................................................................... 6–3 ELECTRICAL CHARACTERISTICS ......................................................................................................................... 6–3 POWER DISSIPATION CONDITIONS ..................................................................................................................... 6–3 PARAMETER SUMMARY ........................................................................................................................................ 6–4 SCI7000 Series Technical Manual EPSON iii Contents DIMENSIONS ........................................................................................................................................................... 6–6 EMBOSS CARRIER TAPING STANDARD (3-PIN SOT89) TAPING INFORMATION ........................................................................................................................................... 6–8 REEL SPECIFICATIONS .......................................................................................................................................... 6–9 DEVICE POSITIONING ............................................................................................................................................ 6–9 EMBOSS CARRIER TAPING STANDARD (8-PIN SOP3) TAPING INFORMATION ......................................................................................................................................... 6–10 REEL SPECIFICATIONS ........................................................................................................................................ 6–11 DEVICE POSITIONING .......................................................................................................................................... 6–11 EMBOSS CARRIER TAPING STANDARD (14-PIN SOP5) TAPING INFORMATION ......................................................................................................................................... 6–13 REEL SPECIFICATIONS ........................................................................................................................................ 6–14 DEVICE POSITIONING .......................................................................................................................................... 6–14 EMBOSS CARRIER TAPING STANDARD (24-PIN SOP2) TAPING INFORMATION ......................................................................................................................................... 6–16 REEL SPECIFICATIONS ........................................................................................................................................ 6–18 DEVICE POSITIONING .......................................................................................................................................... 6–18 iv EPSON SCI7000 Series Technical Manual Introduction This book describes SEIKO EPSON's full line of power supply ICs and includes a complete set of product specifications. Also included are sections on quality assurance and packaging. We suggest that you use the selector guide beginning on the following page to choose the IC or IC series that most closely matches your application. You can then SCI7000 Series Technical Manual use the detailed product descriptions in subsequent sections to confirm device specifications and characteristics. Please contact your local SEIKO EPSON sales representative for further information or assistance on these or other products. EPSON 1 Selection Guide DC/DC Converter Part number SCI7660C0B SCI7660M0B Features • Supply voltage conversion IC. • It effectively converts input voltage into two levels in positive potential or negative potential (millipedes by 1 the in reverse polarity and doubles in the same polarity). • Power conversion efficiency: 95%, as standard. Package DIP-8pin SOP4-8pin DC/DC Converter and Voltage Regulator Part number SCI7661C0B SCI7661M0B/MBB SCI7654C0A SCI7654M0A Features • Supply voltage conversion IC. • If effectively converts input voltage in for levels in positive potential or negative potential (millipedes by 1 or doubles in the reverse polarity and doubles or triples in the same polarity). • Power conversion efficiency: 95%, as standard. • It is capable of selecting temperature gradient for LCD power supply. • • • • Supply voltage conversion IC. It effectively converts input voltage in for levels in negative potential. Power conversion efficiency: 95%, as standard. It is capable of selecting temperature gradient for LCD power supply. Package DIP-14pin SOP5-14pin SSOP2-16pin DIP-16pin SSOP2-16pin Voltage regulator Part number 2 Features Package SCI7810YAA • 6.00V positive output voltage regulator. • Low operating current (typ 1.5 uA). • Input voltage stability (typ 0.1%/V). SOT89-3pin SCI7810YBA • 5.00V positive output voltage regulator. • Low operating current (typ 1.5 uA). • Input voltage stability (typ 0.1%/V). SOT89-3pin SCI7810YMA • 4.50V positive output voltage regulator. • Low operating current (typ 1.5 uA). • Input voltage stability (typ 0.1%/V). SOT89-3pin SCI7810YPA • 4.00V positive output voltage regulator. • Low operating current (typ 1.5 uA). • Input voltage stability (typ 0.1%/V). SOT89-3pin SCI7810YKA • 3.90V positive output voltage regulator. • Low operating current (typ 1.5 uA). • Input voltage stability (typ 0.1%/V). SOT89-3pin SCI7810YNA • 3.50V positive output voltage regulator. • Low operating current (typ 1.5 uA). • Input voltage stability (typ 0.1%/V). SOT89-3pin SCI7810YTA • 3.30V positive output voltage regulator. • Low operating current (typ 1.5 uA). • Input voltage stability (typ 0.1%/V). SOT89-3pin SCI7810YCA • 3.20V positive output voltage regulator. • Low operating current (typ 1.5 uA). • Input voltage stability (typ 0.1%/V). SOT89-3pin SCI7810YDA • 3.00V positive output voltage regulator. • Low operating current (typ 1.5 uA). • Input voltage stability (typ 0.1%/V). SOT89-3pin SCI7810YRA • 2.80V positive output voltage regulator. • Low operating current (typ 1.5 uA). • Input voltage stability (typ 0.1%/V). SOT89-3pin SCI7810YLA • 2.60V positive output voltage regulator. • Low operating current (typ 1.5 uA). • Input voltage stability (typ 0.1%/V). SOT89-3pin EPSON SCI7000 Series Technical Manual Selection Guide Part number Features Package SCI7810YFA • 2.20V positive output voltage regulator. • Low operating current (typ 1.5 uA). • Input voltage stability (typ 0.1%/V). SOT89-3pin SCI7810YGA • 1.80V positive output voltage regulator. • Low operating current (typ 1.5 uA). • Input voltage stability (typ 0.1%/V). SOT89-3pin SCI7810YHA • 1.50V positive output voltage regulator. • Low operating current (typ 1.5 uA). • Input voltage stability (typ 0.1%/V). SOT89-3pin SCI7910YBA • –5.00V negative output voltage regulator. • Low operating current (typ 1.5 uA). • Input voltage stability (typ 0.1%/V). SOT89-3pin SCI7910YPA • –4.00V negative output voltage regulator. • Low operating current (typ 1.5 uA). • Input voltage stability (typ 0.1%/V). SOT89-3pin SCI7910YDA • –3.00V negative output voltage regulator. • Low operating current (typ 1.5 uA). • Input voltage stability (typ 0.1%/V). SOT89-3pin SCI7910YGA • –1.80V negative output voltage regulator. • Low operating current (typ 1.5 uA). • Input voltage stability (typ 0.1%/V). SOT89-3pin DC/DC Switching regulator Part number Features Package SCI7631MHA • • • • • • Step-up switching regulator (from 1.5V to 2.2V). Low operating voltage (0.9V at minimum). Low operating current High precision voltage detection function and battery backup function. Built-in CR oscillator circuit. Power-on clear function. SOP3-8pin SCI7631MLA • • • • • • Step-up switching regulator (from 1.5V to 2.4V). Low operating voltage (0.9V at minimum). Low operating current High precision voltage detection function and battery backup function. Built-in CR oscillator circuit. Power-on clear function. SOP3-8pin SCI7631MBA • • • • • • Step-up switching regulator (from 1.5V to 3.0V). Low operating voltage (0.9V at minimum). Low operating current High precision voltage detection function and battery backup function. Built-in CR oscillator circuit. Power-on clear function. SOP3-8pin SCI7631MKA • • • • • • Step-up switching regulator (from 1.5V to 3.5V). Low operating voltage (0.9V at minimum). Low operating current High precision voltage detection function and battery backup function. Built-in CR oscillator circuit. Power-on clear function. SOP3-8pin SCI7631MAA • • • • • • Step-up switching regulator (from 1.5V to 5.0V). Low operating voltage (0.9V at minimum). Low operating current High precision voltage detection function and battery backup function. Built-in CR oscillator circuit. Power-on clear function. SOP3-8pin SCI7000 Series Technical Manual EPSON 3 Selection Guide Part number Features Package SCI7638MHA • • • • • • • Step-up switching regulator (from 1.5V to 2.2V). Low operating voltage (0.9V at minimum). Low operating current. Built-in CR oscillator circuit. High precision voltage detection. Output voltage response compensation. Temperature characteristics of output voltage for LCD panel (-4.5mV/C). SOP3-8pin SCI7638MLA • • • • • • • Step-up switching regulator (from 1.5V to 2.4V). Low operating voltage (0.9V at minimum). Low operating current. Built-in CR oscillator circuit. High precision voltage detection. Output voltage response compensation. Temperature characteristics of output voltage for LCD panel (-4.0mV/C). SOP3-8pin SCI7633MBA • • • • • Step-up switching regulator (from 1.5V to 3.0V). Low operating voltage (0.9V at minimum). Low operating current. Built-in crystal oscillator circuit. Equipped with crystal oscillator output pin. SOP3-8pin Voltage detector Part number 4 Features Package SCI7720YTA • Voltage detection (Typ 4.00V). • Output format: N-ch open drain. • Low operating power (Typ 2.0 uA, VDD = 5.0V). SOP89-3pin SCI7720YFA • Voltage detection (Typ 2.65V). • Output format: N-ch open drain. • Low operating power (Typ 2.0 uA, VDD = 3.0V). SOP89-3pin SCI7720YCA • Voltage detection (Typ 2.15V). • Output format: N-ch open drain. • Low operating power (Typ 2.0 uA, VDD = 3.0V). SOP89-3pin SCI7720YNA • Voltage detection (Typ 1.90V). • Output format: N-ch open drain. • Low operating power (Typ 2.0 uA, VDD = 3.0V). SOP89-3pin SCI7720YBA • Voltage detection (Typ 1.15V). • Output format: N-ch open drain. • Low operating power (Typ 1.5 uA, VDD = 1.5V). SOP89-3pin SCI7720YYA • Voltage detection (Typ 1.10V). • Output format: N-ch open drain. • Low operating power (Typ 1.5 uA, VDD = 1.5V). SOP89-3pin SCI7720YAA • Voltage detection (Typ 1.05V). • Output format: N-ch open drain. • Low operating power (Typ 1.5 uA, VDD = 1.5V). SOP89-3pin SCI7720YVA • Voltage detection (Typ 0.95V). • Output format: N-ch open drain. • Low operating power (Typ 1.5 uA, VDD = 1.5V). SOP89-3pin SCI7721YLA • Voltage detection (Typ 5.00V). • Output format: COMS. • Low operating power (Typ 2.0 uA. VDD = 6.0V). SOP89-3pin SCI7721YKA • Voltage detection (Typ 4.80V). • Output format: COMS. • Low operating power (Typ 2.0 uA. VDD = 5.0V). SOP89-3pin EPSON SCI7000 Series Technical Manual Selection Guide Part number Features Package SCI7721Y2A • Voltage detection (Typ 4.60V). • Output format: COMS. • Low operating power (Typ 2.0 uA. VDD = 5.0V). SOP89-3pin SCI7721YJA • Voltage detection (Typ 4.40V). • Output format: COMS. • Low operating power (Typ 2.0 uA. VDD = 5.0V). SOP89-3pin SCI7721YMA • Voltage detection (Typ 4.20V). • Output format: COMS. • Low operating power (Typ 2.0 uA. VDD = 5.0V). SOP89-3pin SCI7721YTA • Voltage detection (Typ 4.00V). • Output format: COMS. • Low operating power (Typ 2.0 uA. VDD = 5.0V). SOP89-3pin SCI7721Y3A • Voltage detection (Typ 3.50V). • Output format: COMS. • Low operating power (Typ 2.0 uA. VDD = 4.0V). SOP89-3pin SCI7721YHA • Voltage detection (Typ 3.20V). • Output format: COMS. • Low operating power (Typ 2.0 uA. VDD = 4.0V). SOP89-3pin SCI7721YGA • Voltage detection (Typ 3.00V). • Output format: COMS. • Low operating power (Typ 2.0 uA. VDD = 4.0V). SOP89-3pin SCI7721YRA • Voltage detection (Typ 2.80V). • Output format: COMS. • Low operating power (Typ 2.0 uA. VDD = 3.0V). SOP89-3pin SCI7721YFA • Voltage detection (Typ 2.65V). • Output format: COMS. • Low operating power (Typ 2.0 uA. VDD = 3.0V). SOP89-3pin SCI7721YEA • Voltage detection (Typ 2.55V). • Output format: COMS. • Low operating power (Typ 2.0 uA. VDD = 3.0V). SOP89-3pin SCI7721YSA • Voltage detection (Typ 2.35V). • Output format: COMS. • Low operating power (Typ 2.0 uA. VDD = 3.0V). SOP89-3pin SCI7721YPA • Voltage detection (Typ 2.25V). • Output format: COMS. • Low operating power (Typ 2.0 uA. VDD = 3.0V). SOP89-3pin SCI7721YCA • Voltage detection (Typ 2.15V). • Output format: COMS. • Low operating power (Typ 2.0 uA. VDD = 3.0V). SOP89-3pin SCI7721YFB • Voltage detection (Typ 2.65V). • Output format: COMS. • Low operating power (Typ 2.0 uA. VDD = 3.0V). SOP89-3pin SCI7721YCB • Voltage detection (Typ 2.15V). • Output format: COMS. • Low operating power (Typ 2.0 uA. VDD = 3.0V). SOP89-3pin SCI7722YDB • Voltage detection (Typ. 1.25V). • Output format: P-ch open drain. • Low operating power (Typ 1.5 uA. VDD = 1.5V). SOP89-3pin SCI7000 Series Technical Manual EPSON 5 er n rt ve C D C/ D 1. Co SCI7660 Series DESCRIPTION DC/DC Converter BLOCK DIAGRAM The SCI7660 Series is a highly efficient CMOS DC/DC converter for doubling an input voltage. This powersaving IC allows portable computers and similar handheld equipment to operate from a single power supply, even when they incorporate LSIs that operate at voltages different from those of logic circuits, for example, LCD drivers and analog LSIs. The SCI7660C0B is available in 8-pin plastic DIPs, and the SCI7660M0B, in 8-pin plastic SOPs. VDD OSC1 RC oscillator OSC2 VI FEATURES CAP1+ CAP1– Voltage converter • • • • 95% (typ.) conversion efficiency Two output voltages, VO, relative to VDD and VI 30mA maximum output current at 5V Two-in-series configuration doubles negative output voltage. • Low operating voltage • On-chip RC oscillator • 8-pin plastic DIP and 8-pin plastic SOP VO PIN CONFIGURATION 8 VI NC 1 APPLICATIONS • Fixed-voltage power supplies for battery-operated equipment • Power supplies for pagers, memory cards, calculators and similar hand-held equipment • Fixed-voltage power supplies for medical equipment • Fixed-voltage power supplies for communications equipment • Uninterruptable power supplies 7 VO OSC2 2 SCI7660C0B OSC1 3 6 CAP1– VDD 4 5 CAP1+ PIN DESCRIPTION Number Name 1 NC 2 OSC2 Resistor connection. Open when using external clock 3 OSC1 Resistor connection. Clock input when using external clock 4 VDD 5 CAP1+ Positive charge-pump connection 6 CAP1– Negative charge-pump connection 7 VO ×2 multiplier output 8 VI Negative supply (system ground) SCI7000 Series Technical Manual Description No connection Positive supply (system VCC) EPSON 1–1 SCI7660 Series SPECIFICATIONS Absolute Maximum Ratings Parameter Symbol Rating Unit Input voltage range VI –10.0 to 0.5 V Output voltage range VO Min. –20.0 V Power dissipation PD 300 (DIP) mW 150 (SOP) Operating temperature range Topr –40 to 85 ˚C Storage temperature range Tstg –65 to 150 ˚C Soldering temperature(for 10s). See note. Tsol 260 ˚C Note: Temperatures during reflow soldering must remain within the limits set out in LSI Device Precautions. Never use solder dip to mount SCI7000 series power supply devices. Recommended Operating Conditions VDD = 0V, Ta = –40 to 85˚C unless otherwise noted Parameter Oscillator startup voltage Oscillator shutdown voltage Symbol VSTA VSTP Condition ROSC = 1MΩ, C1/C2≤1/20, C2≥10µF, Ta = –40 to 85˚C See note 1. Rating Min. Typ. Max. — — –1.5 Unit V ROSC = 1MΩ — — –2.2 ROSC = 1MΩ –1.5 — — V Load resistance RL RL min See note 2. — — Ω Output current IO — — 30.0 mA Clock frequency fOSC 10.0 — 30.0 kHz RC oscillator network resistance ROSC 680 — 2,000 kΩ Capacitance C1, C2 3.3 — — µF Notes: 1. The recommended circuit configuration for low-voltage operation (when V I is between –1.2V and –2.2V) is shown in the following figure. Note that diode D1 should have a maximum forward voltage of 0.6V with 1.0mA forward current. 2. RL min can be varied depending on the input voltage. 1–2 EPSON SCI7000 Series Technical Manual SCI7660 Series CL 1 8 2 7 3 6 4 5 + C2 22µF RL DC/DC Converter Battery D1 1MΩ + C1 10µF 3. RL min is a function of VI. Minimum load resistance (kΩ) 5 4 VSTA1 3 2 1 0 1.0 VSTA2 1.5 3.0 2.0 Input voltage (V) 4.0 5.0 6.0 Electrical Characteristics VDD = 0V, Ta = –40 to 85˚C unless otherwise noted Parameter Symbol Condition Rating Min. Typ. Max. Unit Input voltage VI –8.0 — –1.5 V Output voltage VO –16.0 — — V Multiplier current Iopr RL = ∞, ROSC = 1MΩ VI = –5V — 20 30 µA Quiescent current IQ RL =∞, VI = –8V — — 2.0 µA fOSC ROSC = 1MΩ, VI = –5V 16 20 24 kHz Output impedance RO IO = 10mA, VI = –5V — 75 100 Ω Multiplication efficiency Peff IO = 5mA, VI = –5V 90 95 — % OSC1 Input leakage current ILKI VI = –8V — — 2.0 µA Clock frequency SCI7000 Series Technical Manual EPSON 1–3 SCI7660 Series Typical Performance Characteristics 1000 Ta = 25°C VI = –5V VI = –3V VI = –2V fOSC [KHz] fOSC [KHz] 100 10 1 10 100 1000 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 VI = –5.0V VI = –3.0V VI = –2.0V –40 10000 –20 0 ROSC [kΩ] Clock frequency vs. External resistance 20 40 Ta [°C] 60 80 100 Clock frequency vs. Ambient temperature 50 0 fOSC = 40kHz 45 Ta = 25 VI = –5.0V 40 Ta = 25°C fOSC = 20kHz 30 25 20 –5 VO [V] @lopr[µA] 35 fOSC = 10kHz –10 15 10 5 –15 0 –7 –6 –5 –4 –3 VI [V] –2 –1 0 Multiplier current vs. Input voltage 1–4 0 10 20 30 IO [mA] 40 50 Output voltage vs. Output current EPSON SCI7000 Series Technical Manual SCI7660 Series 0 0 Ta = 25°C VI = –2.0V –1 DC/DC Converter Ta = 25°C VI = –3.0V VO [V] VO [V] –2 –5 –3 –4 –5 –6 –10 0 10 20 0 30 1 2 3 IO [mA] Output voltage vs. Output current 4 5 6 IO [mA] 7 8 9 10 Output voltage vs. Output current 300 300 Ta = 25°C IO = 7mA Ta = 25°C Io = 10mA RO [Ω] 200 RO [Ω] 200 100 100 0 0 –7 –6 –5 –4 –3 –2 –1 0 VI [V] –6 –5 –4 –3 –2 –1 0 VI [V] Output impedance vs. Input voltage SCI7000 Series Technical Manual –7 Output impedance vs. Input voltage EPSON 1–5 SCI7660 Series 100 90 80 IO = 30mA 70 70 IO = 20mA Peff [%] 60 IO = 0.5mA IO = 1.0mA IO = 2.0mA IO = 4.0mA 90 IO = 10mA 80 Peff [%] 100 IO = 2mA IO = 5mA 50 40 60 50 40 30 30 VI = –5.0V 20 20 10 10 0 VI = –3.0V 0 1 10 100 1000 1 10 fOSC [kHz] 100 1000 fOSC [kHz] Multiplication efficiency vs. Clock frequency 100 Multiplication efficiency vs. Clock frequency 100 100 100 90 90 90 90 80 80 80 II 50 70 60 60 50 60 50 50 40 40 40 40 30 30 30 30 20 20 20 20 10 10 10 10 0 10 20 30 40 Peff 0 0 0 0 0 50 IO [mA] 5 10 15 20 25 30 IO [mA] Multiplication efficiency/input current vs. Output current 1–6 70 Ta = 25°C VI = –3.0V II [mA] Peff [%] Peff 70 Peff [%] Ta = 25°C VI = –5.0V 60 II [mA] 70 80 II Multiplication efficiency/input current vs. Output current EPSON SCI7000 Series Technical Manual SCI7660 Series 100 40 90 36 Peff 32 70 28 Ta = 25°C VI = –2.0V 24 50 20 II 40 16 30 12 20 8 10 4 0 II [mA] 60 Peff [%] DC/DC Converter 80 0 0 1 2 3 4 5 6 7 8 9 10 IO [mA] Multiplication efficiency/input current vs. Output current FUNCTIONAL DESCRIPTION RC Oscillator Voltage Multiplier The on-chip RC oscillator network frequency is determined by the external resistor, ROSC, connected between OSC1 and OSC2. This oscillator can be disabled in favor of an external clock by leaving OSC2 open and applying an external clock signal to OSC1. The voltage multiplier uses the clock signal from the oscillator to double the input voltage. This requires two external capacitors—a charge-pump capacitor, C1, between CAP1+ and CAP1–, and a smoothing capacitor, C2, between VI and VO. Oscillator External clock VDD = 0 V 5V External clock signal ROSC OSC2 VI = –5 V OSC1 OSC1 OSC2 1 8 2 7 3 6 4 5 + C2 10µF VO1 = –10V (2VI) 1MΩ + C1 10µF Doubled potential levels SCI7000 Series Technical Manual EPSON VCC (+5V) VDD = 0 V GND VI = –5 V (–5V) VO = (2VI) = –10 V 1–7 SCI7660 Series TYPICAL APPLICATIONS Parallel Connection Connecting two or more chips in parallel reduces the output impedance by 1/n, where n is the number of devices used. VDD = 0 V 5V VI = –5 V 1 8 2 7 3 6 + C2 10µF 1 8 2 7 3 6 4 5 1MΩ 1MΩ 5 4 C1 10µF + C1 10µF + VO = –10 V Serial Connection Connecting two or more chips in series obtains a higher output voltage than can be obtained using a parallel connection, however, this also raises the output impedance. VDD = 0 V VI = –5 V 5V VDD' = VI = –5 1 8 2 7 3 6 4 5 + C2 10µF 1 8 2 7 3 6 4 5 + C2 10µF 1MΩ 1MΩ + C1 10µF VO = –10 V = VI' + C1 10µF VO' = –15 V Potential levels VDD (0 V) VI (–5 V) VO (–10 V) VDD VI VO (–15 V) Primary stage 1–8 Secondary stage EPSON SCI7000 Series Technical Manual SCI7660 Series Positive Voltage Conversion DC/DC Converter Diodes can be added to a circuit connected in parallel to make a negative voltage positive. VDD = 0 V VI = –5 V 5V VO' = 3.8 V C2 1 8 2 7 3 6 4 5 + 10µF 1MΩ C1 + 10µF Simultaneous Voltage Conversion Combining a multiplier circuit with a positive voltage conversion circuit generates both –10 and 3.8 V outputs from a single input. Potential levels VO2 = 3.8 V VDD = 0 V VI= –5 V VDD = 0 V VI = –5 V VO1 = –10 V 5V VO2 = 3.8 V C4 1 8 2 7 3 6 4 5 1MΩ SCI7000 Series Technical Manual + C2 10µF + 10µF VO1 = –10 V C1 + 10µF C3 + 10µF EPSON 1–9 2. er t r tor ve a l n Co egu DC ge R / DC olta V & DESCRIPTION APPLICATIONS The SCI7661 Series is a highly effecient CMOS DC/ DC converter for doubling or tripling an input voltage. It incorporates an on-chip voltage regulator to ensure stable output at the specified voltage. The SCI7661 Series offers a choice of three, optional temperature gradients for applications such as LCD panel power supplies. The SCI7661C0B is available in 14-pin plastic DIPs, the SCI7661M 0B , in 14-pin plastic SOPs, and the SCI7661MBB in 16-pin plastic SSOPs. • Power supplies for LCD panels • Fixed-voltage power supplies for battery-operated equipment • Power supplies for pagers, memory cards, calculators and similar hand-held equipment • Fixed-voltage power supplies for medical equipment • Fixed-voltage power supplies for communications equipment • Power supplies for microcomputers • Uninterruptable power supplies FEATURES • 95% (Typ.) conversion efficiency • Up to four output voltages, VO, relative to the input voltage, VI • On-chip voltage regulator • 20mA maximum output current at VI = –5V • Three temperature gradients––0.1, 0.4 and 0.6%/°C • External shut-down control • 2µA maximum output current when shut-down • Two-in-series configuration doubles negative output voltage. • On-chip RC oscillator • SCI7661C0B ................ pladtic DIP-14 pin SCI7661M0B ............... pladtic SOP5-14 Pin SCI7661MBB .............. pladtic SSOP2-16 pin BLOCK DIAGRAM VDD OSC1 Oscilator OSC2 Reference voltge generator VI CAP1– CAP1+ Temperature gradient selector Voltage multiplier (1) TC2 POFF CAP2– CAP2+ TC1 Voltage multiplier (2) Voltage regulator RV VREG VO Multiplication stage SCI7000 Series Technical Manual Stabilization stage EPSON 2–1 DC/DC Converter & Voltage Regulator SCI7661 Series SCI7661 Series PIN CONFIGURATION CAP+ 1 14 CAP– 2 13 VDD OSC1 CAP2+ 3 12 OSC2 CAP2– 4 11 POFF TC1 5 10 RV TC2 6 9 VREG VI 7 8 VO CAP+ CAP– NC CAP2+ CAP2– TC1 TC2 VI SCI7661C0B/M0B 1 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 VDD OSC1 NC OSC2 POFF RV VREG VO SCI7661MBB PIN DESCRIPTION 2–2 Number Name 1 CAP1+ Positive charge-pump connection for ×2 multiplier 2 CAP1– Negative charge-pump connection for ×2 multiplier 3 CAP2+ Positive charge-pump connection for ×3 multiplier 4 CAP2– Negative charge-pump connection for ×3 multiplier or ×2 multiplier output 5 TC1 6 TC2 Description Temperature gradient selects 7 VI Negative supply (system ground) 8 VO ×3 multiplier output 9 VREG 10 RV Voltage regulator output Voltage regulator output adjust 11 POFF Voltage regulator output ON/OFF control 12 OSC2 Resistor connection. Open when using external clock 13 OSC1 Resistor connection. Clock input when using external clock 14 VDD Positive supply (system VCC) EPSON SCI7000 Series Technical Manual SCI7661 Series SPECIFICATIONS Absolute Maximum Ratings Input supply voltage Input terminal voltage Output voltage Ratings Codes VI – VDD VI – VDD VO – VDD Remarks Units N = 2: Boosting to a double voltage –20/N to VDD + 0.3 V VI – 0.3 to VDD + 0.3 V VO – 0.3 to VDD + 0.3 V TC1, TC2, RV –20 to VDD + 0.3 V VO Note 3) VO to VDD + 0.3 V VREG Note 3) Allowable dissipation Pd Max. 300 mW Working temperature Topr –40 to 85 °C Storage temperature Tstg –55 to 150 °C Soldering temperature and time Tsol 260°C 10 s (at leads) N = 3: Boosting to a triple voltage OSC1, OSC2, POFF DC/DC Converter & Voltage Regulator Items Plastic package – Notes 1. Using the IC under conditions exceeding the aforementioned absolute maximum ratings may lead to permanent destruction of the IC. Also, if an IC is operated at the absolute maximum ratings for a longer period of time, its functional reliability may be substantially deteriorated. 2. All the voltage ratings are based on VDD = 0V. 3. The output terminals (VO,VREG) are meant to output boosted voltage or stabilized boosted voltage. They, therefore, are not the terminals to apply an external voltage. In case the using specifications unavoidably call for application of an external voltage, keep such voltage below the voltage ratings given above. Reconmmended Operating Conditions VDD = 0V, Ta = –40 to 85˚C unless otherwise noted Parameter Symbol Oscillator startup voltage VSTA Oscillator shutdown voltage VSTP Conditions Rating Unit Min. Typ. Max. – – –1.8 ROSC = 1MΩ – – –2.2 ROSC = 1MΩ –1.8 – – V – – Ω 20.0 mA ROSC =1MΩ C3 = 10 µF, CL/C3 ≤ 1/20, Ta = –40 to 85˚C. See note 1. V Load resistance RL RL min. See note 2. Output current IO – – Clock frequency fOSC 10.0 – 30.0 kHz RC oscillator network resistance ROSC 680 – 2,000 kΩ C1, C2, C3 3.3 – – µF RRV 100 – 1,000 kΩ Capacitance Stabilization voltage sensing resistance Notes 1. The recommended circuit configuration for low-valtage operation (when VI is between –1.2V and –2.2V) is shown in the following figure. Note that diode D1 should have a maximum forward voltage of 0.6V with 1.0mA forward current. 2. RL min can be varied depending on the input voltage. SCI7000 Series Technical Manual EPSON 2–3 SCI7661 Series C1 10µF + 1 14 2 13 ROSC 1MΩ C2 + 10µF 3 12 4 11 5 10 6 9 7 8 CL RL +C3 22µF D1 3. RL min is a function of V1 Minimum load resistance (kΩ) 5 VSTA2 VSTA1 4 3 2 Voltage tripler 1 Voltage doubler 0 1 1.5 2 3 4 Input voltage (V) 5 6 Electrical Characteristics VDD = 0V, V1 = –5V, Ta = –40 to 85°C unless otherwise noted Parameter Symbol Conditions Rating Min. Typ. Max. Unit Input voltage VI –6.0 – –1.8 V Output voltage VO –18.0 – – V –18.0 – –2.6 V –18.0 – –3.2 V – 40 80 µA – 5.0 12.0 µA Regulator voltage Stabilization circuit operating voltage VREG VO Multiplier current Iopr1 Stabilization current Iopr2 Quiescent current Clock frequency 2–4 RL = ∞, RRV = 1MΩ, VO = –18V IQ fOSC RL = ∞, ROSC = 1MΩ RL = ∞, RRV = 1MΩ, VO = –15V TC2 = TC1 = VO, RL = ∞ ROSC = 1MΩ EPSON – – 2.0 µA 16.0 20.0 24.0 kHz SCI7000 Series Technical Manual SCI7661 Series Rating Symbol Conditions Typ. Max. – 150 200 Ω 90.0 95.0 – % – 0.2 – %/V – 5.0 – Ω – 8.0 – Ω –2.3 –1.5 –1.0 TC2 = TC1 = VO, Ta = 25˚C –1.7 –1.3 –1.1 TC2 = VDD, TC1 = VO, Ta = 25˚C –1.1 –0.9 –0.8 –0.25 –0.1 –0.01 –0.5 –0.4 –0.3 –0.7 –0.6 –0.5 – – 2.0 Output impedance RO IO = 10mA Multiplication efficiency Peff IO = 5mA Stabilization output voltage differential Stabilization output load differential Stabilization output saturation resistance Reference voltage Temperature gradient POFF, TC1, TC2, OSC1, and RV input leakage current ∆VREG ∆VO·VREG ∆VREG ∆IO RSAT VRV CT Unit Min. VO = –18 to –8V, VREG = –8V, RL = ∞, Ta = 25˚C VO = –15V, VREG = –8V, Ta = 25˚C, IO = 0 to 10µA, TC1 = VDD, TC2 = VO RSAT = ∆(VREG – VO)/∆IO, IO = 0 to 10µA, RV = VDD, Ta = 25˚C RC2 = VO, TC1 = VDD, Ta = 25˚C See note. ILKI V %/˚C µA Note CT = |VREG (50°C)| – |VREG (0°C)| 100 × 50°C – 0°C |VREG (25°C)| SCI7000 Series Technical Manual EPSON 2–5 DC/DC Converter & Voltage Regulator Parameter SCI7661 Series Typical Performance Characteristics 1000 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 –40 Ta = 25°C VI = –5V VI = –3V VI = –2V fOSC [KHz] fOSC [kHz] 100 10 1 10 100 1000 10000 VI = –5.0V VI = –3.0V VI = –2.0V –20 ROSC [kΩ] Clock frequency vs. External resistance 0 20 40 Ta [°C] 60 80 100 Clock frequency vs. Ambient temperature 150 0 Ta = 25°C Ta = 25°C VI = –5.0V fOSC = 40kHz 100 VO [V] Iopr [µA] –5 fOSC = 20kHz ×2 multiplier –10 50 ×3 multiplier fOSC = 10kHz –15 0 –7 –6 –5 –4 –3 VI [V] –2 –1 0 0 Multiplier current vs. Input voltage 2–6 10 20 IO [mA] 30 40 Output voltage vs. Output current EPSON SCI7000 Series Technical Manual SCI7661 Series 0 0 Ta = 25°C VI = –3.0V ×2 multiplier –2 ×3 multiplier –10 –3 ×2 multiplier –4 ×3 multiplier –5 –15 10 20 –6 30 0 IO [mA] Output voltage vs. Output current 1 2 3 4 5 6 IO [mA] 7 8 9 10 Output voltage vs. Output current 100 100 100 60 90 90 90 54 80 80 80 ×3 multiplier II 50 40 70 70 ×2 multiplier 60 Peff 50 ×3 multiplier Peff 40 60 Peff [%] 60 II [mA] Ta = 25°C VI = –5.0V 70 50 30 20 20 10 10 10 0 0 0 ×2 multiplier II 20 0 10 20 30 IO [mA] 40 24 12 ×2 multiplier II 6 0 5 10 15 20 25 30 IO [mA] Multiplication efficiency/input current vs. Output current SCI7000 Series Technical Manual 30 ×3 multiplier Peff 18 0 50 ×2 multiplier 42 Peff 36 ×3 multiplier II 40 30 30 48 Ta = 25°C VI = –3.0V II [mA] 0 Peff [%] DC/DC Converter & Voltage Regulator VO [V] Vo [V] –5 Ta = 25°C VI = –2.0V –1 Multiplication efficiency/input current vs. Output current EPSON 2–7 SCI7661 Series 500 40 100 ×2 multiplier Peff 90 400 32 80 ×3 multiplier Peff 24 20 50 ×3 multiplier II 40 Rout [Ω] 60 28 II [mA] Ta = 25°C VI = –2.0V 70 Peff [%] Ta = 25°C IO = 6mA 36 300 200 16 ×3 multiplier 12 30 ×2 multiplier II 20 ×2 multiplier 100 8 4 10 0 0 0 0 1 2 3 4 5 6 IO [mA] 7 8 9 –7 10 –6 –5 –4 –3 –2 –1 0 VI [V] Multiplication efficiency/input current vs. Output current Output impedance vs. Input voltage 500 100 Ta = 25°C IO = 10mA 400 IO = 2mA 90 Peff [%] Rout [Ω] IO = 5mA 300 200 80 IO = 10mA 70 ×3 multiplier IO = 20mA ×2 multiplier 100 60 IO = 30mA 0 50 –7 –6 –5 –4 –3 –2 –1 0 1 Output impedance vs. Input voltage 10 100 1000 fOSC [kHz] VI [V] 2–8 Ta = 25°C VI = –5.0V Multiplication efficiency vs. Clock frequency EPSON SCI7000 Series Technical Manual SCI7661 Series 100 –7.850 IO = 0.5mA IO = 1.0mA 90 VO = –15V IO = 2.0mA Ta = 25°C –7.900 80 DC/DC Converter & Voltage Regulator VREG [V] Peff [%] IO = 4.0mA 70 –7.950 Ta = 25°C 60 VI = – 3.0V –8.000 0.0001 50 1 10 100 1000 0.0010 0.0100 0.1000 IO [V] fOSC [kHz] Multiplication efficiency vs. Clock frequency Output voltage vs. Output current –2.850 –5.850 VO = –6V VO = –9V Ta = 25°C Ta = 25°C –5.900 VREG [V] VREG [V] –2.900 –2.950 –5.950 –6.000 0.0001 –3.000 0.0010 0.0100 0.1000 IO [V] 0.0010 0.0100 0.1000 IO [V] Output voltage vs. Output current SCI7000 Series Technical Manual 0.0001 Output voltage vs. Output current EPSON 2–9 SCI7661 Series 0.30 0.25 VO = –5V |VREG-VO| [V] 0.20 VO = –10V VO = –15V 0.15 0.10 0.05 100×|VREG(°C)|-|VREG(25°C)|/|VREG(25°C)| [%] 50 Ta = 25°C 0 CT0 CT1 CT2 –50 0.00 0 5 10 IO [mA] 15 –40 20 Regulator voltage vs. Output current –20 0 20 40 Ta [°C] 60 80 100 Regulator output stability ratio vs. Ambient temperature Temperature Gradient Control The SCI7661C0B offers a choice of three temperature gradients which can be used to adjust the voltage regulator output in applications such as power supplies for driving LCDs. POFF TC2 TC1 See note 1. Temperature gradient (%/˚C) See note 2. Voltage regulator output RC osciliator 1 (VDD) LOW (VO) LOW (VO) –0.4 ON ON 1 LOW HIGH (VDD) –0.1 ON ON 1 HIGH (VDD) LOW –0.6 ON ON 1 HIGH HIGH –0.6 ON OFF 0 (V1) LOW LOW – OFF (high impedance) OFF 0 LOW HIGH – OFF (high impedance) OFF 0 HIGH LOW – OFF (high impedance) OFF 0 HIGH HIGH – OFF (high impedance) OFF Remarks Serial connection Multiplier operational Notes 1. The definition of LOW for POFF differs from that for TC1 and TC2. 2. The temperature gradient affects the voltage between VDD and VREG. 2–10 EPSON SCI7000 Series Technical Manual SCI7661 Series FUNCTIONAL DESCRIPTION Oscillator Voltage Multiplier The voltage multiplier uses the clock signal from the oscillator to double or triple the input voltage. This requires three external capacitors–two charge-pump capacitors between CAP1+ and CAP1– and CAP2+ and CAP2–, respectively, and a smoothing capacitor between VI and VO. External clock VDD = 0 V OSC1 OSC1 C1 10 µF External clock signal ROSC 5V OSC2 OSC2 Reference Volatge Generator and Voltage Regulator The reference voltage generator supplies a reference voltage to the voltage regulator to control the output. This voltage can be switched ON and OFF. C2 10 µF + + VI = –5 V 1 14 2 13 3 12 4 11 5 10 6 9 7 8 + ROSC 1 MΩ R1 R2 RRV 100 kΩ to 1 MΩ + C4 10 µF VREG = –8 V VO = –15 V C3 10 µF Double voltage potential levels VDD POFF RV VCC (+5V) Control signal RRV = 100 kΩ to 1 MΩ GND VREG (–5V) VDD = 0 V VI = –5 V VCAP2 – = 2VI = –10 V Tripled voltage potential levels VDD = 0 V VI = –5 V VO = 3VI = –15 V SCI7000 Series Technical Manual EPSON 2–11 DC/DC Converter & Voltage Regulator Oscillator The on-chip RC oscillator network frequency is determined by the external resistor, ROSC, connected between OSC1 and OSC2. This oscillator can be disabled in favor of an external clock by leaving OSC2 open and applying an external clock signal to OSC1. SCI7661 Series TYPICAL APPLICATIONS Voltage Tripler with Regulator The following figure shows the circuit required to triple the input voltage, regulate the result and add a temperature gradient of –0.4%/°C. Note that the high input impedance of RV requires appropriate noise countermeasures. Converting a Voltage Tripler to a Voltage Doubler To convert this curcuit to a voltage doubler, remove capacitor C2 and short circuit CAP2– to VO. VDD = 0 V VDD = 0 V 5V C1 10 µF + C2 10 µF + 1 + C2 10µF + 1 14 2 13 3 12 4 11 5 10 6 9 14 2 13 3 12 4 11 5 10 6 9 7 VI = –5 V C1 10µF 8 + ROSC 1 MΩ R1 R2 5V RRV 100 kΩ to 1 MΩ + C4 10 µF VI = –5 V VREG = –8 V VO = –15 V = 7 VO = –15 V 8 + RRV VRV R1 ROSC 1 MΩ C3 10 µF C3 10 µF Parallel Connection Connecting two or more chips in parallel reduces the output impedance by 1/n, where n is the number of devices used. Only the single output smoothing capacitor, C3, is re- quired when any number of devices are connected in parallel. Also, the voltage regulator in one chip is sufficient to regulate the combined output. VDD = 0 V 5V VI = –5 V C1 + 10 µF 1 14 2 13 C2 + 10 µF 3 12 4 11 5 10 9 6 9 8 7 8 C1 + 10 µF 1 14 2 13 C2 + 10 µF 3 12 4 11 5 10 6 7 ROSC 1 MΩ ROSC 1 MΩ RRV 100 kΩ to 1 MΩ + C4 10 µF VREG = –10 V VO = –15 V +C3 10 µF 2–12 EPSON SCI7000 Series Technical Manual SCI7661 Series Serial Connection connection, however, this also raises the output impedance. <Precautions when connecting loads> In case of series connections, when connecting loads between the first stage VDD (or other potential of the second stage VDD or up) and the second stage VREG as shown in Fig. 2-13, be cautions about the following point. the first stage VDD (or other potential of the second stage VDD or up) to cause a voltage exceeding the absolute maximum rating for the second stage VDD at the VREG terminal, normal operation of the IC may be hampered. Consequently, When making a series connection, insert a diode D1 between the second stage VI and VREG as shown in Fig. 2-13 so that a voltage exceeding the second stage VDD or up may not be applied to the VREG terminal. * When normal output is not occurring at the VREG terminal such as at times of starting up or when turning the VREG off by Poff signals, if current flows into the second stage VREG terminal through the load from V'DD = VI = –5V VDD = 0V 10µF 5V 1 10µF 2 13 3 12 4 11 5 10 6 10µF + 7 + 1 14 – 2 13 + 3 12 – 4 11 5 10 6 9 7 8 1MΩ 10µF 9 VO = –10V= VI 8 + VI = –5V 14 – 100kΩ to 1MΩ Load + + – – 10µF V'REG = –15V VO = –20V – 10µF D1 Positive Voltage Conversion Adding diodes converts a negative voltage to a positive one. To convert the voltage tripler shown earlier to a voltage doubler, remove C2 and D2, and short circuit D3. Small Schottky diodes are recommended for all three diodes. The resulting voltage is lowered by VF, the voltage drop in the forward direction for each diode used. For example, if VDD = 0V, VI = –5V, and VF = 0.6V, the resulting voltages would be as follows. • For a voltage tripler, VO = 10 – (3 × 0.6) = 8.2V • For a voltage doubler, VO = 5 – (2 × 0.6) = 3.8V SCI7000 Series Technical Manual VDD = 0 V C1 10 µF D1 + D2 C2 10 µF 5V + D3 + VO = 8.2 V 1 14 2 13 3 12 4 11 5 10 6 9 7 8 ROSC 1 MΩ C3 10 µF VI = –5 V EPSON 2–13 DC/DC Converter & Voltage Regulator Connecting two or more chips in series obtains a higher output voltage than can be obtained using a parallel SCI7661 Series Simultaneous Voltage Conversion Using an External Gradient Combining a standard voltage tripler circuit with one for positive voltage conversion generates both –15 and 8.2V outputs from a single input, however, it also raises the output impedance. A voltage doubler generates –10 and 3.8V outputs. The SCI7661C0B/M0B offers three built-in temperature gradients— –0.1, –0.4 and –0.6%/°C. To set the gradient externally, place a thermistor, RT, in series with the variable resistor, RRV, used to adjust the output voltage. VDD = 0 V 10 µF + D2 10 µF 10 µF + D3 + 10 µF + 10 µF 5V + D1 1 14 2 13 3 12 4 11 5 10 6 9 7 8 ROSC 1 MΩ VO1 = –15 V 1 14 2 13 3 12 4 11 5 10 6 9 7 8 VDD R1 + 10 µF RRV RT RP VREG VO2 = 8.2 V + 10 µF VI = –5 V Potential levels VO2 = 8.2V VDD = 0 V VI = –5 V VO1 = –15 V 2–14 EPSON SCI7000 Series Technical Manual SCI7654 Series • Input voltages The SCI7654 C0A/M0A is a CMOS process, chargepumping DC/DC converter and voltage regulator featuring the very high efficiency but low power consumption. An addition of four, three, or two external capacitors can generate four-, three- or two-time output voltage in negative direction than the input voltage. Also, the built-in voltage regulator can set any output voltage of DC/DC converter and can output the regulated voltage using two external resistances. As the regulator output can have a negative temperature gradient that is required for LCD panels, it is optimum for the LCD panel power supply. FEATURES SCI7000 Series Technical Manual • DC/DC converter output voltage • • • • Charge-pumping, DC-to-DC converter (four-, threeor two-time negative boosting) • Built-in voltage regulator (regulated voltage output circuit) • High power conversion efficiency : 95% • Low current consumption : 130 µA (VI = –5.0 V during four-time boosting, Typ.) • High output capacity : 20 mA (Max.) : –2.4 to –5.5 V (during four-time boosting) : 2.4 to –7.3 V (during three-time boosting) : 2.4 to –11 V (during two-time boosting) • • • : |Input voltage| × 4 (Max.) Built-in reference voltage for high-precision regulator : 1.5 + –0.05 V (at CT0) Temperature gradient function of regulator output voltages : –0.04, –0.15, –0.35, –0.55 (%/°C) Low standby current (during power-off) : 5.0 µA Power-off by the external signal Full built-in oscillator circuit Lineup : SCI7654M 0A , 16-pin SSOP : SCI7654C 0A , 16-pin DIP APPLICATIONS • Power supply of medium- and small-capacity LCD panels • Regulated power supply of battery driven devices EPSON 2–15 DC/DC Converter & Voltage Regulator DESCRIPTION SCI7654 Series BLOCK DIAGRAM Figure 2.1 Block diagram VDD POFF1 POFF2 FC Reference voltage circuit Power-off control circuit Clock generator circuit TC1 TC2 RV Booster control circuit Voltage regulation circuit VREG VRI Voltage converter circuit VI C1P C1N C3N VO C2P C2N PIN DESCRIPTION Figure 2.2 SCI7654M0A/C0A pin assignment 2–16 VO 1 16 C2P VRI 2 15 C2N VREG 3 14 C3N RV 4 13 C1N VDD 5 12 C1P FC 6 11 VI TC1 7 10 POFF1 TC2 8 9 POFF2 EPSON SCI7000 Series Technical Manual SCI7654 Series Table 2.1 Functions of the terminal Function VO 1 18 Four-time booster output VRI 2 19 Regulator input VREG 3 20 Regulator output RV 4 21 Regulator output voltage adjustment input VDD 5 22, 23 FC 6 24 Internal clock frequency input, and clock input in serial/parallel connection TC1 7 3 Regulator output temperature gradient setup input (1) TC2 8 4 Regulator output temperature gradient setup input (2) POFF2 9 5 Power-off control input (2) POFF1 10 6 Power-off control input (1) VI 11 11, 12 Power voltage (negative) C1P 12 13 Two- or four-time booster capacitor positive pin C1N 13 14 Two-time booster capacitor negative pin C3N 14 15 Four-time booster capacitor negative pin C2N 15 16 Three-time booster capacitor negative pin C2P 16 17 Three-time booster capacitor positive pin SCI7000 Series Technical Manual DC/DC Converter & Voltage Regulator Pin name Pin No. PAD No. Power pin (positive) EPSON 2–17 SCI7654 Series Table 2.2 Absolute maximum ratings VDD reference Parameter Symbol Rating Min. Max. Unit Remarks Input power voltage VI –26.0/N VDD + 0.3 V N = Boost time VI pin Input pin voltage V1 VI – 0.3 VDD + 0.3 V POFF1, POFF2, TC1, TC2 and FC pins Output pin voltage 1 VOC1 VI – 0.3 VDD + 0.3 V C1P and C2P pins Output pin voltage 2 VOC2 2 × VI – 0.3 VI + 0.3 V C1N pin Output pin voltage 3 VOC3 3 × VI – 0.3 2 × VI + 0.3 V C2N pin Output pin voltage 4 VOC4 4 × VI – 0.3 3 × VI + 0.3 V C3N pin Regulator input power voltage VRI N × VI – 0.3 VDD + 0.3 V N = Boost time, VRI pin Regulator input pin voltage VRV N × VI – 0.3 VDD + 0.3 V N = Boost time, RV pin Output voltage VO N × VI – 0.3 VDD + 0.3 V N = Boost time VO and VREG pins Input current II 80 mA VI pin Output current IO N ≤ 4: 20 N > 4: 80/N mA N = Boost time VO and VREG pins Allowable loss Pd 210 mW Ta ≤ 25°C Operating temperature Topr –30 85 °C Storage temperature Tstg –55 150 °C Soldering temperature and time Tsol 260 • 10 °C • S At leads Notes: 1. An operation exceeding the above absolute maximum ratings may cause a malfunction or permanent damage of devices. The device reliability may drop excessively even if the devices temporarily operate normally. 2. Electrical potential to peripheral systems: The SCI7654 common power supply has the highest potential (VDD). The electrical potential given by this specification is based on VDD = 0 V. Take care to avoid a potential problem during connection to a peripheral system. 2–18 EPSON SCI7000 Series Technical Manual SCI7654 Series Figure 2.3 Potential relationship VCC System SCI7654 VDD (0 V) (+5 V) 5V VI (–5 V) DC/DC Converter & Voltage Regulator GND (0 V) 10 V –10 V Two-time boosting 15 V –15 V Three-time boosting 20 V Four-time boosting ELECTRICAL CHARACTERISTICS Table 2.3 DC characteristics (1) Parameter Input power voltage Boost start input power voltage Symbol VI VSTA Ta = –30°C to +85°C, VDD = 0 V, VI = –5.0 V unless otherwise noted Characteristics Min. –22/N –2.4 V N = Boost time if CT1 is selected –22/N –2.4 V N = Boost time if CT2 is selected –22/N –2.4 V N = Boost time if CT3 is selected –22/N –2.4 V N = Boost time, FC = VDD during no loading –22/N –2.4 V VO –22 Regulator input voltage VRI –22 SCI7000 Series Technical Manual VREG Max. Unit N = Boost time if CT0 is selected Boost output voltage Regulator output voltage Typ. IREG = 0, VRI = –22 V RRV = 1MΩ EPSON V –2.4 V –2.4 V 2–19 SCI7654 Series Table 2.3 DC characteristics (2) Ta = –30°C to +85°C, VDD = 0 V, VI = –5.0 V unless otherwise noted Parameter Boost output impedance Boost power conversion efficiency Booster operation current consumption 1 Booster operation current consumption 2 Regulator operation current consumption Symbol RO Peff Iopr1 Iopr2 IOPVR Characteristics Min. Typ. Max. Unit IO = 10 mA, VI = –5.0 V during 4-time boosting C1, C2, C3, CO = 10 µF (tantalum) 200 300 Ω IO = 10 mA, VI = –3.0 V, Ta = 25°C during 4-time boosting C1, C2, C3, CO = 10 µF (tantalum) 250 300 Ω IO = 2 mA, VI = –5.0 V during 4-time boosting C1, C2, C3, CO = 10 µF (tantalum) 95 % IO = 2 mA, VI = –3.0 V, Ta = 25°C during 4-time boosting C1, C2, C3, CO = 10 µF (tantalum) 94 % FC = VDD, POFF1 = VI, POFF2 = VDD, VI = –5.0 V during no loading C1, C2, C3, CO = 10 µF (tantalum) 130 220 µA FC = VDD, POFF1 = VI, POFF2 = VDD, VI = –3.0 V, Ta = 25°C during no loading C1, C2, C3, CO = 10 µF (tantalum) 90 150 µA FC = VI, POFF1 = VI, POFF2 = VDD, VI = –5.0 V during no loading C1, C2, C3, CO = 10 µF (tantalum) 520 880 µA FC = VI, POFF1 = VI, POFF2 = VDD, VI = –3.0 V, Ta = 25°C during no loading C1, C2, C3, CO = 10 µF (tantalum) 360 600 µA VRI = –20 V, RRV = 1 MΩ during no loading 10 15 µA Static current IQ POFF1 = VI, POFF2 = VI FC = VDD 5.0 µA Input leakage current ILI Pins used: POFF1, POFF2, FC, TC1, TC2 0.5 µA 20 Ω 0.2 %/V Regulated output saturation resistance 0 < IREG < 20 mA RSAT (*1) RV = VDD Ta = 25°C Regulated output voltage stability –20 V < VRI < –10 V, IREG = 1 mA ∆VR (*2) VREG = –9 V Ta = 25°C 2–20 EPSON 10 SCI7000 Series Technical Manual SCI7654 Series Table 2.3 DC characteristics (3) Ta = –30°C to +85°C, VDD = 0 V, VI = –5.0 V unless otherwise noted Regulated output load variation Symbol Characteristics Min. VRI = –20 V, VREG = –15 V, ∆VO (*3) Ta = 25°C setup 0 < IREG < 20 mA Reference voltage (Ta = 25°C) Reference voltage temperature coefficient (*4, *5) 30 Max. Unit 50 mV VREF0 TC1 = VDD, TC2 = VDD –1.55 –1.50 –1.45 V VREF1 TC1 = VDD, TC2 = VI –1.70 –1.50 –1.30 V VREF2 TC1 = VI, TC2 = VDD –1.90 –1.50 –1.10 V VREF3 TC1 = VI, TC2 = VI –2.15 –1.50 –0.85 V CT0 TC1 = VDD, TC2 = VDD, SSOP product –0.07 –0.04 CT1 TC1 = VDD, TC2 = VI, SSOP product –0.25 –0.15 –0.07 %/°C CT2 TC1 = VI, TC2 = VDD, SSOP product –0.45 –0.35 –0.20 %/°C CT3 TC1 = VI, TC2 = VI, SSOP product –0.75 –0.55 –0.30 %/°C VI VI = –2.4 to –5.5 V Pins used: POFF1, POFF2, FC, TC1, TC2 0.2 VI VIL VI = –2.4 to –5.5 V Pins used: POFF1, POFF2, FC, TC1, TC2 0.8 VI V CMAX Capacitors used: C1, C2 and C3 47 µF Input voltage level Booster capacitance Typ. 0 %/°C V ∆ (VREG – VRI) ∆IREG *1 RSAT = *2 ∆VR = VREG (VRI = –20 V) – VREG (VRI = –10 V) ∆VRI • VREG (VRI = –10 V) *3 ∆VO = VREG (IREG = 20 mA) – VREG (IREG = 0 mA) ∆IREG *4 CT = *5 The reference voltage and temperature coefficient of the chip products may vary depending on the moldings used on each chip. Use these chips only after the temperature test. SCI7000 Series Technical Manual | VREF (50°C) | – | VREF (0°C) | 50°C – 0°C × 100 | VREF (25°C) | EPSON 2–21 DC/DC Converter & Voltage Regulator Parameter SCI7654 Series Table 2.4 AC characteristics VDD = 0 V and VI = –5.0 V unless otherwise noted Parameter Internal clock frequency 1 Symbol fCL1 Characteristics FC = VDD, POFF1 = VI POFF2 = VDD Pin used: C1P Internal clock frequency 2 fCL2 FC = VI, POFF1 = VI POFF2 = VDD Pin used: C1P Min. Typ. Max. Unit Ta = 25°C 3.0 4.0 6.0 kHz Ta = –30°C to +85°C 2.0 4.0 7.0 kHz Ta = 25°C 12.0 16.0 24.0 kHz Ta = –30°C to +85°C 8.0 16.0 28.0 kHz EXPLANATION OF FUNCTIONS Clock Generator Circuit As the SCI7654 has a built-in clock generator circuit, no more parts are required for voltage boost control. The clock frequency changes according to the FC pin voltage level as defined on Table 2.5. Low Output mode or High Output mode is selectable. This allows frequency selection according to the used capacitance and load current as the boost output impedance changes depending on the clock frequency and external booster capacitance. However, the High Output mode has the current consumption approximately four times larger than the Low Output mode. Table 2.5 FC pin setup Characteristics FC pin Mode Clock frequency H (VDD) Low Output 4.0 kHz (Typ.) L (VI) High Output 16.0 kHz (Typ.) IOP × Approx. 4 VRI × Approx. 1/4 See Figure A1. See Figure A1. Current Output Output ripple Capacitance consumption impedance IOP (*1) VRR (*2) See Figure A1. See Figure A1. *1 See the DC characteristics table for current consumption. *2 See Section Page 2-32 for the output ripple definition and calculation. 2–22 EPSON SCI7000 Series Technical Manual SCI7654 Series Figure A1 Characteristic chart: Capacitance vs. output impedance when 4X pressure is applied NOTE: This characteristic chart simply indicates an approximate trend in the characteristics, which may vary depending on evaluation environment, parts used, and other factors. Capacitance vs. output impedance characteristic when 4X pressure is applied Load current = 10 mA, Ta = 25°C, C1 = C2 = C0 Capacitor used: Tantalum electrolytic capacitor DC/DC Converter & Voltage Regulator 550 500 Output impedance [Ω] 450 400 350 300 250 200 150 1 10 100 C [µF] SCI7000 Series Technical Manual VI = –3.0V FC = "H" VI = –3.0V FC = "L" VI = –5.0V FC = "H" VI = –5.0V FC = "L" EPSON 2–23 SCI7654 Series Voltage Converter The voltage converter, consisting of a boost control circuit and a voltage converter circuit, receives clocks from the clock generator circuit and boosts the input power voltage (VI) four, three or two times. During four-time boosting, however, the three-time and two- time boost outputs cannot be obtained simultaneously. Figure 2.4 gives the potential relationship during four-, three- and two-time boosting. The C2P pin is also used as the master clock output during parallel connection. Figure 2.4 Electrical potentials during boosting (at -5V input) VDD (0 V) VI (–5 V) 10 V –10 V Two-time boosting 15 V –15 V Three-time boosting 20 V –20 V Four-time boosting Caution: • When connecting a capacitor to the C1P, C2P, C1N, C2N, C3N, or VO pin for voltage conversion, close the capacitor to the IC package as much as possible to minimize the wiring length. 2–24 EPSON SCI7000 Series Technical Manual SCI7654 Series Reference Voltage Circuit The SCI7654 has a built-in reference voltage circuit for voltage regulation. The regulated voltage (explained in the next “voltage regulator circuit” section) is set depending on the division ratio between this reference voltage and the external resistance. The reference voltage can be used to change the temperature coefficient at pins TC1 and TC2. One of four states can be selected as listed on Table 2.6. Reference voltage, VREF (V) Temperature coefficient, CT (%/°C) TC1 (H = VDD) (L = VI) TC2 (H = VDD) (L = VI) Min. Typ. Max. Min. Typ. Max. CT0 H H –1.55 –1.5 –1.45 –0.07 –0.04 0 CT1 H L –1.70 –1.5 –1.30 –0.25 –0.15 –0.07 CT2 L H –1.90 –1.5 –1.10 –0.45 –0.35 –0.20 CT3 L L –2.15 –1.5 –0.85 –0.75 –0.55 –0.30 Mode Notes: 1. The reference voltage is given at Ta = 25°C. 2. The reference voltage and temperature coefficient of the chip products may vary depending on the moldings used on each chip. Use these chips only after the temperature test. The temperature coefficient (CT) is defined by the following equation. The negative sign of the temperature coefficient (CT) means that the |VREF| value decreases when the temperature rises. CT = | VREF (50°C) | – | VREF (0°C) | 50°C – 0°C × 100 | VREF (25°C) | Notes on TC1 and TC2 pin replacement: • When replacing the TC1 and TC2 pins after power-on, always select the power-off mode (POFF1 = POFF2 = VI) and replace them by each other. Voltage Regulator Circuit The voltage regulator circuit regulates a voltage entered in the VRI pin and can output any voltage. It uses the series voltage regulation. As shown in Figure 2.5, the VRI and VO pins must be short-circuited by a jumper as short as possible except for larger time boosting by using external diodes. As shown by equation (1), any output voltage can be set by the ratio of external division resistors R1 and R2. The sum of division resistance is recommended to be SCI7000 Series Technical Manual small as possible to avoid an external noise interference. As the current consumed by division resistors (equation (2)) flows, the 100 ohms to 1M ohms are recommended to use. The temperature coefficient of the regulated voltage is equal to the temperature coefficient of the reference voltage that is explained in the “reference voltage circuit” section. EPSON 2–25 DC/DC Converter & Voltage Regulator Table 2.6 Setup of reference voltage and temperature coefficient SCI7654 Series Figure 2.5 VREG setup and mounting notes R1 R2 1 VO C2P 16 2 VRI C2N 15 3 VREG C3N 14 4 RV C1N 13 5 VDD C1P 12 6 FC VI 11 7 TC1 POFF1 10 8 TC2 POFF2 9 Setup: • Relationship between VREG and reference voltage R1 + R2 VREG = × (Reference voltage) R1 • Current consumption of division resistors | VREG | IREG = R1 + R2 • • • • Equation (1) • • • • Equation (2) Setup example: • To output VREG = –18 V by four-time boosting if VI = –5 V and VO = –20 V First, determine the total resistance of division resistors R1 and R2. If the current consumption is assumed to be 20 µA, the total resistance can be obtained from equation (2) as follows: R1 + R2 = 12V ÷ 20 µA = 900 kΩ If the reference voltage is -1.5 V, the division resistance ratio can be obtained from equation (1) as follows: (R1 + R2) / R2 = (–18 V) ÷ (–1.5 V) = 12 Therefore, R1 and R2 are: R1 = 75 kΩ R2 = 825 kΩ 2–26 EPSON SCI7000 Series Technical Manual SCI7654 Series Changing the temperature coefficient: • The temperature coefficient of the regulated voltage depends on the temperature coefficient of the reference voltage (if the division ratio of setup resistors does not depend on the temperature). It is necessary to change the temperature coefficient using thermistors, resistors or others to set any other temperature coefficient of the regulated voltage. The following explains how to calculate the VREG voltage in temperature T. T0 CTR1 CTR2 CTREF R1 (T0) R2 (T0) VREF (T0) { 1 + CC TR2 TR1 : : : : : : : × R2 (T0) × CTREF × (T – T0) × VREF (T0) × R1 (T0) } • • • • Equation (3) DC/DC Converter & Voltage Regulator VREG (T) = 25°C Temperature coefficient of resistor R1 (Ratio to the value at 25°C) Temperature coefficient of resistor R2 (Ratio to the value at 25°C) Temperature coefficient of internal reference voltage (%/°C) R1 value (Ω) at 25°C R2 value (Ω) at 25°C Internal reference voltage (V) at 25°C If the temperature coefficient of R1 and R2 is identical in equation (3), the VREG voltage depends on the temperature coefficient of internal reference voltage only. Application notes on voltage regulator circuit: • To satisfy the absolute maximum ratings of the SCI7654, the setup resistor(s) must be inserted between VDD and VREG pins of the SCI7654 that uses the voltage regulator. The SCI7654 IC itself may be degraded or destroyed if the R1 resistor is connected to pin VDD of SCI7654 that does not use the regulator during serial connection. • The regulation voltage adjustment input (pin RV) has the very high input impedance, and its noise insertion can drop the regulator stability. As shown in Figure 2.5, shield the cable between the division resistor and RV pin or use a cable as short as possible between them. SCI7000 Series Technical Manual EPSON 2–27 SCI7654 Series Power-off Control Function The SCI7654 has the power-off function and turns on or off each circuit function when control signals are entered in the POFF1 and POFF2 pins from an external system (such as microprocessor) as defined on Table 2.7. This power-off function can also cut the reactive current in parallel connection and other application circuits. To use the dual-state, power-off control (all ON and all OFF states) only, connect pin POFF2 to pin VI and use only pin POFF1 for power-off control. Table 2.7 Available combination of power-off control Mode Functions POFF1 POFF2 (H = VDD) (H = VDD) Booster Regulator (L = VI) (L = VI) Oscillator circuit circuit Applications PS1 H L On On On All circuits are turned on. PS2 L L Off Off (*1) Off (*2) All circuits are turned off. PS3 H H Off On On Slave unit side of parallel connection (Booster and regulator) PS4 L H On On Off Master unit side of parallel connection (Booster only) *1 When the booster circuit is off, approximately VI + 0.6 V voltage appears at VO pin. *2 When the regulator is off, the VREG pin becomes high-impedance state. Application notes on power-off function: • When using external system signals for power-on control, start to control the power only when VI voltage becomes stable after power-on. Unstable VI voltage may destroy the IC permanently during on/off control. Figure 2.6 Start timing of power-off control 2–28 VI VI POFF1 POFF1 POFF2 POFF2 EPSON SCI7000 Series Technical Manual SCI7654 Series CHARACTERISTICS GRAPHICS Figure 2.7 Characteristics graphics 200 300 DC/DC Converter & Voltage Regulator 280 180 Booster output impedance [Ω] Booster current consumption [µA] 260 160 140 120 100 240 220 200 180 160 80 140 60 40 120 100 0 1 2 3 4 5 7 6 1 Input voltage [V] 2 3 4 5 6 7 Input voltage [V] Input voltage (VI) -Booster circuit current consumption (Iopr) Input voltage (VI) - Booster output impedance (ROUT) Peff (%) VO (V) VO (V) VI = –3 V, Four-times Booster –12.00 Peff (%) VI = –5 V, Four-times Booster 100.0 –20.00 100.0 VO VO Peff Peff 50.00 20.00 0 0 0 0 IO (mA) Power conversion efficiency (Peff) Output voltage (VO) Input current (IO) IO (mA) Power conversion efficiency (Peff) Output voltage (VO) Input current (IO) SCI7000 Series Technical Manual 50.00 20.00 EPSON 2–29 SCI7654 Series APPLICATION CIRCUIT EXAMPLES Four-time Booster and Regulator Figure 2.8 gives a wiring example of four-time booster and regulator that is the typical SCI7654 application. This example boosts the input voltage (VI) four times in negative direction, and outputs the regulated voltage at VREG pin. Figure 2.8 Wiring example of 4-time booster and regulator CO + VREG CREG + R1 R2 VDD 1 VO C2P 16 2 VRI C2N 15 3 VREG C3N 14 4 RV C1N 13 5 VDD C1P 12 6 FC + CI + C2 C3 C1 + + VI 11 7 TC1 POFF1 10 8 TC2 POFF2 9 VI ◊ Setup conditions of Figure 2.8 • Internal clock : On (Low Output mode) • Booster circuit : On • Regulator : On (if CT = –0.04%/°C) ◊ Power-off procedure • Set the POFF1 pin to logical low (VI) to turn off all circuits. ◊ Regulator • For the regulator setup and notes, see the “voltage regulator circuit” section. ◊ Application in other setup conditions 1 When used in the High Output mode • Connect the FC pin to the VI pin. 2 When changing the temperature coefficient (CT) • Change the TC1 and TC2 pin setup by following the definition of Table 2.7. 2–30 EPSON SCI7000 Series Technical Manual SCI7654 Series 4-time Booster Only the booster circuit operates, and it boosts the input voltage (VI) four times in negative direction and outputs it at the VO pin. As the regulator is not used, the voltage appearing at the VO pin may contain ripple components. Figure 2.9 gives a wiring example. Figure 2.9 Wiring example of 4-time booster CO VO VDD 1 VO C2P 16 2 VRI C2N 15 3 VREG C3N 14 4 RV C1N 13 5 VDD C1P 12 6 FC + CI DC/DC Converter & Voltage Regulator + + C2 C3 C1 + + VI 11 7 TC1 POFF1 10 8 TC2 POFF2 9 VI ◊ Setup conditions of Figure 2.9 • Internal clock : On (Low Output mode) • Booster circuit : On • Regulator : Off ◊ Power-off procedure • Set the POFF2 pin to low (VI) to turn off all circuits. ◊ Ripple voltage • As the output at VO pin is unstable, it can contain ripple components as shown in Figure 2.10. The ripple voltage (VRP) increases according to the load current, and it can roughly be calculated by equation (4). SCI7000 Series Technical Manual EPSON 2–31 SCI7654 Series Figure 2.10 Ripple waveforms VRP VRP = IO 2 • fCL • CO + IO • RCOUT • • • • Equation (4) where, : Load current (A) IO fCL : Clock frequency (Hz) RCOUT : Serial equivalent resistance (Ω) of output capacitor CO ◊ Application in other setup conditions 1 When used in the High Output mode • Connect the FC pin to the VI pin. Parallel Connection (for Increased Boosting) The parallel connection is useful for reduction of booster output impedance or reduction of ripple voltage. In the parallel connection of “n” lines, the booster output impedance can be reduced to approximately “1/ n". Only the smoothing capacitor (CO) for booster output can be used commonly in the parallel connection. When using the regulator, use only one of “n” SCI7654 chips which are in parallel connection. (If multiple regulators are operated in parallel mode, the reactive current consumption occurs.) Figure 2.11 gives a wiring example of 4-time booster and regulator where two SCI7654's are parallelly connected. Figure 2.11 Parallel connection example VREG + CO VDD 1 VO C2P 16 + 2 VRI C2N 15 C2 3 VREG C3N 14 4 RV C1N 13 5 VDD C1P 12 6 FC + CI CREG + R1 C3 + C1 + VI 11 R2 1 VO C2P 16 + 2 VRI C2N 15 C2 3 VREG C3N 14 4 RV C1N 13 5 VDD C1P 12 6 FC C3 + C1 + VI 11 7 TC1 POFF1 10 7 TC1 POFF1 10 8 TC2 POFF2 9 8 TC2 POFF2 9 VI 2–32 EPSON SCI7000 Series Technical Manual SCI7654 Series ◊ Setup conditions of Figure 2.11 First stage • Internal clock : On (Low Output mode) • Booster circuit : On • Regulator : Off Second stage • Internal clock : Off • Booster circuit : On • Regulator : On (if CT = –0.04%/°C) • In Figure 2.11, when the POFF2 pin of the first-stage SCI7654 is set to low (VI), voltage boosting is stopped at the first and second stages. However, the regulator at the second stage does not stop. Therefore, the voltage that is approximately VI appears at VREG pin during |VREG| > |VI| setup. • To set the VREG pin to high-impedance state, set both POFF1 and POFF2 pins to low at the first and second stages. ◊ Application in other setup conditions 1 When used in the High Output mode • Connect the FC pin of the first-stage SCI7654 to the VI pin. 2 When changing the temperature coefficient (CT) • Change the TC1 and TC2 pin setup by following the definition of Table 2.7. Larger Time Boosting Using Diodes The SCI7654 can be configured to have the five-time or larger voltage boosting and regulation by adding external diodes. As the booster output impedance increases due to the diode forward voltage drop (VF), the diodes having a smaller VF are recommended to use. Figure 2.12 gives a wiring example of 6-time booster and regulator that use two diodes. The wiring between VO and VRI must be minimal. Figure 2.13 provides the potential relationship. Figure 2.12 Wiring example for 6-time boosting using diodes VO' VREG CREG + R1 1 VO C2P 16 2 VRI C2N 15 3 VREG C3N 14 4 RV C1N 13 5 VDD C1P 12 R2 VDD 6 FC + CI C4 + D1 D2 + C2 C1 C3 C5 CO + + + + VI 11 7 TC1 POFF1 10 8 TC2 POFF2 9 VI SCI7000 Series Technical Manual EPSON 2–33 DC/DC Converter & Voltage Regulator ◊ Power-off procedure SCI7654 Series ◊ Setup conditions of Figure 2.12 • Internal clock : On (Low Output mode) • Booster circuit : On • Regulator : On (if CT = –0.04%/°C) Figure 2.13 Potential relationship during 6-time boosting using diodes VDD VI VI 4VI 6VI – (2∗VF) VO 6VI VO' 2∗VF ◊ Power-off procedure • Set the POFF1 pin to low (VI) to turn off all circuits. ◊ Output voltages • When diodes are used for voltage boosting, the characteristics of diodes directly affect on the voltage boosting characteristics. The forward voltage drop (VF) of diodes can reduce the booster output voltage. As the example of Figure 2.12 uses two diodes, the drop of “VF” voltage multiplied by two occurs as shown in Figure 2.13. The booster output voltage is expressed by equation (5). To increase the |VO'| value, use the diodes having a smaller VF. | VO' | = 6 × | VI | – 2 × VF • • • • Equation (5) ◊ Notes 1 Input and output current conditions To satisfy the input and output current ratings, limit the total current does not exceed the rated input current. The total current means the total boost time multiplied by the output load current. The example of Figure 2.12 has the maximum load current of 13.3 mA ( = 80 mA divided by 6). 2 Input and output voltage conditions To satisfy the input and output voltage ratings, take care not to violate the electric potential relationship of higher time boosting using diodes. The example of Figure 2.12 must have the “VI” that can satisfy the input voltage conditions during 6-time boosting (see Table 2.3). ◊ Application in other setup conditions 1 When used in the High Output mode Connect the FC pin to the VI pin. 2 When changing the temperature coefficient (CT) Change the TC1 and TC2 pin setup by following the definition of Table 2.7. 2–34 EPSON SCI7000 Series Technical Manual SCI7654 Series Positive Voltage Conversion The SCI7654 can also boost up a voltage to the positive potential using external diodes. In such case, however, the regulator function is unavailable. Figure 2.14 gives a wiring example for three-time positive boosting, and Figure 2.15 provides its electrical potential relationship. Figure 2.14 Wiring example of positive voltage conversion (3-time boosting) D1 D2 D3 C1 VDD 1 VO C2P 16 2 VRI C2N 15 3 VREG C3N 14 4 RV C1N 13 5 VDD C1P 12 6 FC + CI DC/DC Converter & Voltage Regulator VO' + C2 + + CO VI 11 7 TC1 POFF1 10 8 TC2 POFF2 9 VI ◊ Setup conditions of Figure 2.14 • Internal clock : On (Low Output mode) • Booster circuit : On • Regulator : Off Figure 2.15 Potential relationship during positive voltage conversion (3-time boosting) 3∗VF 3VI VDD VO' 3VI – (3∗VF) VI VI ◊ Power-off procedure • Set the POFF2 pin to low (VI) to turn off all circuits. ◊ Two-time boosting • To boost up a voltage two times, remove capacitor C1 and diode D1 of Figure 2.14, and connect the anode of diode D2 to the VDD pin. SCI7000 Series Technical Manual EPSON 2–35 SCI7654 Series ◊ Output voltages • When diodes are used for voltage boosting, the characteristics of diodes directly affect on the voltage boosting characteristics. The forward voltage drop (VF) of diodes can reduce the booster output voltage. As the example of Figure 2.14 uses three diodes, the drop of “VF” voltage multiplied by three occurs. The booster output voltage is expressed by equation (5). To increase the |VO'| value, use the diodes having a smaller VF. | VO' | = 3 × | VI | – (3 × VF) • • • • Equation (6) ◊ Notes 1 Input and output current conditions To satisfy the input and output current ratings, take care to limit the input current below the ratings. 2 Input and output voltage conditions During forward voltage conversion, the input voltage ratings are the same as two-time negative voltage boosting (see Table 2.3). ◊ Application in other setup conditions When used in the High Output mode, connect the FC pin to the VI pin. Wiring Example When Changing the Regulator Temperature Coefficient voltage. To set another temperature coefficient, use a thermistor resistor or others as shown in Figure 2.16. The temperature coefficient of the regulator depends on the temperature coefficient of the internal reference Figure 2.16 Wiring example when changing the regulator temperature coefficient CO + VREG CREG + R1 RP R2 RT VDD 1 VO C2P 16 + 2 VRI C2N 15 C2 3 VREG C3N 14 4 RV C1N 13 5 VDD C1P 12 6 FC + CI C3 C1 + + VI 11 7 TC1 POFF1 10 8 TC2 POFF2 9 VI 2–36 EPSON SCI7000 Series Technical Manual SCI7654 Series ◊ Setup conditions of Figure 2.16 • Internal clock • Booster circuit • Regulator • Thermistor resistor : : : : On (Low Output mode) On On RT ◊ Power-off procedure ◊ Regulator temperature coefficient • For the regulator setup and notes, see the “voltage regulator circuit” section of the function. • The thermistor resistor (RT) has the non-linear temperature characteristics. To correct them to the linear characteristics, insert the RP as shown Figure 2.16. ◊ Application in other setup conditions • When used in the High Output mode, connect the FC pin to the VI pin. SCI7000 Series Technical Manual EPSON 2–37 DC/DC Converter & Voltage Regulator • Set the POFF1 pin to low (VI) to turn off all circuits. r g to a l u ag e eR lt Vo 3. SCI7810Y Series DESCRIPTION FEATURES The SCI7810Y series products are the fixed type positive voltage regulators being developed utilizing the CMOS silicon gate process. It is mainly consisted of the reference voltage circuit driven with low operating current, differential amplifier, transistor for output control and voltage setting resistor. Output voltage is fixed on ICs. A wide variety of standard voltage products are prepared. The package used is the SOT89-3 pins plastic package. • A wide variety of lineups: 12 types are offered in the range of 2V to 6V. • Low operating current: Typ. 1.5 µA (VDD = 5.0V). • Smaller difference between the input and output voltage: Typ. 0.02V (IO = 10 mA, VO = 5.0V). • Built-in, highly stable reference voltage source: Typ. 1.0V. • Smaller temperature factor on output voltage: Typ. – 100 ppm/°C. • Wider operating voltage range: Maximum 15V. VDD (2pin) Voltage Regulator BLOCK DIAGRAM VO (3pin) + – Vref VSS (1pin) SCI7000 Series Technical Manual EPSON 3–1 SCI7810Y Series MODEL CLASSIFICATION Product name Output voltage Min. Typ. Max. SCI7810YAA 5.75 6.00 6.25 SCI7810YBA 4.90 5.00 5.10 SCI7810YMA 4.40 4.50 4.60 SCI7810YPA 3.90 4.00 4.10 SCI7810YKA 3.80 3.90 4.00 SCI7810YNA 3.43 3.50 3.57 SCI7810YTA 3.23 3.30 3.37 SCI7810YCA 3.13 3.20 3.27 SCI7810YDA 2.93 3.00 3.07 SCI7810YRA 2.73 2.80 2.87 SCI7810YLA 2.53 2.60 2.67 SCI7810YFA 2.15 2.20 2.25 SCI7810YGA 1.75 1.80 1.85 SCI7810YHA 1.45 1.50 1.55 PIN DESCRIPTION Pin Function Pin No. Pin name 3–2 Pin function 1 VSS Input voltage pin (negative side) 2 VDD Input voltage pin (positive side) 3 VO Output voltage pin EPSON SCI7000 Series Technical Manual SCI7810Y Series DESCRIPTION OF FUNCTION SOT89-3pin 1 2 3 The SCI7810Y series products are the fixed type positive output voltage regulators. They employ the series regulation approach using CMOS transistors between the input and output for control of the output. The voltage divided by the built-in resistors R1 and R2 (VREG ) is fed back to the operational amplifier and compared against the reference voltage (Vref). This process enables to control the gate voltage of the output control transistor so that stable output voltage (VO) independent of input voltage is ensured. Output voltage is internally fixed and determined by the following formula. VO = R1 + R2 • Vref R1 Voltage Regulator Pin Layout (Output control transistor) VO (3pin) VDD (2pin) R2 (VREG) + – (Operational amplifier) Vref R1 VSS (1pin) SCI7000 Series Technical Manual EPSON 3–3 SCI7810Y Series ABSOLUTE MAXIMUM RATING Parameter Symbol Rating VDD – VSS 18 Output voltage VO VDD + 0.3 to VSS – 0.3 Output current IO 100 mA Allowable dissipation PD 200 mW Operating temperature Topr –30 to +85 °C Storage temperature Tstg –65 to +150 Soldering time Soldering temperature Tsol 260°C 10 seconds (at lead) Input voltage 3–4 EPSON Unit V — SCI7000 Series Technical Manual SCI7810Y Series ELECTRIC CHARACTERISTICS SCI7810YAA (Ta = –30°C to +85°C shall be assumed except where otherwise specified.) Symbol VI Conditions (VSS = 0.0v) Min. — Typ. — Max. 15 Unit V 5.75 6.00 6.25 V Output voltage VO VDD = 8.0V, IO = –10mA Ta = 25°C Operating current IOP VDD = 6.0V to 15.0V No load — 1.5 5.0 µA VO = 6.0V, IO = –10mA — 0.16 0.32 V Voltage difference between input and output VI – VO Output voltage temperature characteristics ∆VO VO –300 –100 +100 ppm /°C dVO dVI • VO Ta = –30°C to +85°C (At the same temperature level) VDD = 7.0V to 15.0V IO = –10mA — 0.1 — %/V Load stability ∆VO Ta = –30°C to +85°C (At the same temperature level) VDD = 8.0V IO = –1mA to –50mA — 50 — mV Supply voltage regulation rejection ratio PSRR VDD = 8.0V, fin = 50kHz CL = 10µF, IO = –10mA — –40 — dB Input voltage stability SCI7810YBA (Ta = –30°C to +85°C shall be assumed except where otherwise specified.) Parameter Symbol Conditions (VSS = 0.0v) Min. Typ. Max. Unit — — 15 V 4.90 5.00 5.10 V VDD = 5.0V to 15.0V No load — 1.5 5.0 µA VO = 5.0V, IO = –10mA — 0.17 0.34 V Input voltage VI Output voltage VO VDD = 7.0V, IO = –10mA Ta = 25°C Operating current IOP Voltage difference between input and output VI – VO Output voltage temperature characteristics ∆VO VO –300 –100 +100 ppm /°C dVO dVI • VO Ta = –30°C to +85°C (At the same temperature level) VDD = 6.0V to 15.0V IO = –10mA — 0.1 — %/V Load stability ∆VO Ta = –30°C to +85°C (At the same temperature level) VDD = 7.0V IO = –1mA to –50mA — 50 — mV Supply voltage regulation rejection ratio PSRR VDD = 7.0V, fin = 50kHz CL = 10µF, IO = –10mA — –40 — dB Input voltage stability SCI7000 Series Technical Manual EPSON 3–5 Voltage Regulator Parameter Input voltage SCI7810Y Series SCI7810YMA (Ta = –30°C to +85°C shall be assumed except where otherwise specified.) Parameter Symbol Input voltage Conditions (VSS = 0.0v) VI Min. Typ. Max. Unit — — 15 V 4.40 4.50 4.60 V Output voltage VO VDD = 6.0V, IO = –10mA Ta = 25°C Operating current IOP VDD = 4.5V to 15.0V No load — 1.5 5.0 µA VO = 4.5V, IO = –10mA — 0.18 0.36 V Voltage difference between input and output VI – VO Output voltage temperature characteristics ∆VO VO –300 –100 +100 ppm /°C dVO dVI • VO Ta = –30°C to +85°C (At the same temperature level) VDD = 6.0V to 15.0V IO = –10mA — 0.1 — %/V Load stability ∆VO Ta = –30°C to +85°C (At the same temperature level) VDD = 6.0V IO = –1mA to –40mA — 40 — mV Supply voltage regulation rejection ratio PSRR VDD = 6.0V, fin = 50kHz CL = 10µF, IO = –10mA — –40 — dB Input voltage stability SCI7810YPA (Ta = –30°C to +85°C shall be assumed except where otherwise specified.) Parameter Symbol Conditions (VSS = 0.0v) Min. Typ. Max. Unit — — 15 V 3.90 4.00 4.10 V VDD = 4.0V to 15.0V No load — 1.5 5.0 µA VO = 4.0V, IO = –10mA — 0.19 0.38 V Input voltage VI Output voltage VO VDD = 6.0V, IO = –10mA Ta = 25°C Operating current IOP Voltage difference between input and output VI – VO Output voltage temperature characteristics ∆VO VO –300 –100 +100 ppm /°C dVO dVI • VO Ta = –30°C to +85°C (At the same temperature level) VDD = 5.0V to 15.0V IO = –10mA — 0.1 — %/V Load stability ∆VO Ta = –30°C to +85°C (At the same temperature level) VDD = 6.0V IO = –1mA to –40mA — 40 — mV Supply voltage regulation rejection ratio PSRR VDD = 6.0V, fin = 50kHz CL = 10µF, IO = –10mA — –40 — dB Input voltage stability 3–6 EPSON SCI7000 Series Technical Manual SCI7810Y Series SCI7810YKA (Ta = –30°C to +85°C shall be assumed except where otherwise specified.) Symbol Input voltage Conditions (VSS = 0.0v) VI Min. Typ. Max. Unit — — 15 V 3.80 3.90 4.00 V Output voltage VO VDD = 6.0V, IO = –10mA Ta = 25°C Operating current IOP VDD = 3.9V to 15.0V No load — 1.5 5.0 µA VO = 3.9V, IO = –10mA — 0.19 0.38 V Voltage difference between input and output VI – VO Output voltage temperature characteristics ∆VO VO –300 –100 +100 ppm /°C dVO dVI • VO Ta = –30°C to +85°C (At the same temperature level) VDD = 5.0V to 15.0V IO = –10mA — 0.1 — %/V Load stability ∆VO Ta = –30°C to +85°C (At the same temperature level) VDD = 6.0V IO = –1mA to –40mA — 40 — mV Supply voltage regulation rejection ratio PSRR VDD = 6.0V, fin = 50kHz CL = 10µF, IO = –10mA — –40 — dB Input voltage stability SCI7810YNA (Ta = –30°C to +85°C shall be assumed except where otherwise specified.) Parameter Symbol Conditions (VSS = 0.0v) Min. Typ. Max. Unit — — 15 V 3.43 3.50 3.57 V VDD = 3.5V to 15.0V No load — 1.5 5.0 µA VO = 3.5V, IO = –10mA — 0.21 0.42 V Input voltage VI Output voltage VO VDD = 5.0V, IO = –10mA Ta = 25°C Operating current IOP Voltage difference between input and output VI – VO Output voltage temperature characteristics ∆VO VO –300 –100 +100 ppm /°C dVO dVI • VO Ta = –30°C to +85°C (At the same temperature level) VDD = 5.0V to 15.0V IO = –10mA — 0.1 — %/V Load stability ∆VO Ta = –30°C to +85°C (At the same temperature level) VDD = 5.0V IO = –1mA to –30mA — 30 — mV Supply voltage regulation rejection ratio PSRR VDD = 5.0V, fin = 50kHz CL = 10µF, IO = –10mA — –40 — dB Input voltage stability SCI7000 Series Technical Manual EPSON 3–7 Voltage Regulator Parameter SCI7810Y Series SCI7810YTA (Ta = –30°C to +85°C shall be assumed except where otherwise specified.) Parameter Symbol Input voltage Conditions (VSS = 0.0v) VI Min. Typ. Max. Unit — — 15 V 3.23 3.30 3.37 V Output voltage VO VDD = 5.0V, IO = –10mA Ta = 25°C Operating current IOP VDD = 3.3V to 15.0V No load — 1.5 5.0 µA VO = 3.3V, IO = –10mA — 0.22 0.44 V Voltage difference between input and output VI – VO Output voltage temperature characteristics ∆VO VO –300 –100 +100 ppm /°C dVO dVI • VO Ta = –30°C to +85°C (At the same temperature level) VDD = 4.0V to 15.0V IO = –10mA — 0.1 — %/V Load stability ∆VO Ta = –30°C to +85°C (At the same temperature level) VDD = 5.0V IO = –1mA to –40mA — 30 — mV Supply voltage regulation rejection ratio PSRR VDD = 5.0V, fin = 50kHz CL = 10µF, IO = –10mA — –40 — dB Input voltage stability SCI7810YCA (Ta = –30°C to +85°C shall be assumed except where otherwise specified.) Parameter Symbol Conditions (VSS = 0.0v) Min. Typ. Max. Unit — — 15 V 3.13 3.20 3.27 V VDD = 3.2V to 15.0V No load — 1.5 5.0 µA VO = 3.2V, IO = –10mA — 0.22 0.44 V Input voltage VI Output voltage VO VDD = 5.0V, IO = –10mA Ta = 25°C Operating current IOP Voltage difference between input and output VI – VO Output voltage temperature characteristics ∆VO VO –300 –100 +100 ppm /°C dVO dVI • VO Ta = –30°C to +85°C (At the same temperature level) VDD = 4.0V to 15.0V IO = –10mA — 0.1 — %/V Load stability ∆VO Ta = –30°C to +85°C (At the same temperature level) VDD = 5.0V IO = –1mA to –30mA — 30 — mV Supply voltage regulation rejection ratio PSRR VDD = 5.0V, fin = 50kHz CL = 10µF, IO = –10mA — –40 — dB Input voltage stability 3–8 EPSON SCI7000 Series Technical Manual SCI7810Y Series SCI7810YDA (Ta = –30°C to +85°C shall be assumed except where otherwise specified.) Symbol Input voltage Conditions (VSS = 0.0v) VI Min. Typ. Max. Unit — — 15 V 2.93 3.00 3.07 V Output voltage VO VDD = 5.0V, IO = –10mA Ta = 25°C Operating current IOP VDD = 3.0V to 15.0V No load — 1.5 5.0 µA VO = 3.0V, IO = –10mA — 0.23 0.46 V Voltage difference between input and output VI – VO Output voltage temperature characteristics ∆VO VO –300 –100 +100 ppm /°C dVO dVI • VO Ta = –30°C to +85°C (At the same temperature level) VDD = 4.0V to 15.0V IO = –10mA — 0.1 — %/V Load stability ∆VO Ta = –30°C to +85°C (At the same temperature level) VDD = 5.0V IO = –1mA to –30mA — 30 — mV Supply voltage regulation rejection ratio PSRR VDD = 5.0V, fin = 50kHz CL = 10µF, IO = –10mA — –40 — dB Input voltage stability SCI7810YRA (Ta = –30°C to +85°C shall be assumed except where otherwise specified.) Parameter Symbol Conditions (VSS = 0.0v) Min. Typ. Max. Unit — — 15 V 2.73 2.80 2.87 V VDD = 2.8V to 15.0V No load — 1.5 5.0 µA VO = 2.8V, IO = –10mA — 0.24 0.48 V Input voltage VI Output voltage VO VDD = 5.0V, IO = –10mA Ta = 25°C Operating current IOP Voltage difference between input and output VI – VO Output voltage temperature characteristics ∆VO VO –300 –100 +100 ppm /°C dVO dVI • VO Ta = –30°C to +85°C (At the same temperature level) VDD = 4.0V to 15.0V IO = –10mA — 0.1 — %/V Load stability ∆VO Ta = –30°C to +85°C (At the same temperature level) VDD = 5.0V IO = –1mA to –30mA — 30 — mV Supply voltage regulation rejection ratio PSRR VDD = 5.0V, fin = 50kHz CL = 10µF, IO = –10mA — –40 — dB Input voltage stability SCI7000 Series Technical Manual EPSON 3–9 Voltage Regulator Parameter SCI7810Y Series SCI7810YLA (Ta = –30°C to +85°C shall be assumed except where otherwise specified.) Parameter Symbol Input voltage Conditions (VSS = 0.0v) VI Min. Typ. Max. Unit — — 15 V 2.53 2.60 2.67 V Output voltage VO VDD = 5.0V, IO = –10mA Ta = 25°C Operating current IOP VDD = 2.6V to 15.0V No load — 1.5 5.0 µA VO = 2.6V, IO = –10mA — 0.25 0.50 V Voltage difference between input and output VI – VO Output voltage temperature characteristics ∆VO VO –300 –100 +100 ppm /°C dVO dVI • VO Ta = –30°C to +85°C (At the same temperature level) VDD = 4.0V to 15.0V IO = –10mA — 0.1 — %/V Load stability ∆VO Ta = –30°C to +85°C (At the same temperature level) VDD = 5.0V IO = –1mA to –30mA — 30 — mV Supply voltage regulation rejection ratio PSRR VDD = 5.0V, fin = 50kHz CL = 10µF, IO = –10mA — –40 — dB Input voltage stability SCI7810YFA (Ta = –30°C to +85°C shall be assumed except where otherwise specified.) Parameter Symbol Conditions (VSS = 0.0v) Min. Typ. Max. Unit — — 15 V 2.15 2.20 2.25 V VDD = 2.2V to 15.0V No load — 1.5 5.0 µA VO = 2.2V, IO = –10mA — 0.28 0.56 V Input voltage VI Output voltage VO VDD = 3.0V, IO = –10mA Ta = 25°C Operating current IOP Voltage difference between input and output VI – VO Output voltage temperature characteristics ∆VO VO –300 –100 +100 ppm /°C dVO dVI • VO Ta = –30°C to +85°C (At the same temperature level) VDD = 3.0V to 15.0V IO = –10mA — 0.1 — %/V Load stability ∆VO Ta = –30°C to +85°C (At the same temperature level) VDD = 3.0V IO = –1mA to –30mA — 20 — mV Supply voltage regulation rejection ratio PSRR VDD = 3.0V, fin = 50kHz CL = 10µF, IO = –10mA — –40 — dB Input voltage stability 3–10 EPSON SCI7000 Series Technical Manual SCI7810Y Series SCI7810YGA (Ta = –30°C to +85°C shall be assumed except where otherwise specified.) Symbol Input voltage Conditions (VSS = 0.0v) VI Min. Typ. Max. Unit — — 15 V 1.75 1.80 1.85 V Output voltage VO VDD = 3.0V, IO = –10mA Ta = 25°C Operating current IOP VDD = 2.2V to 15.0V No load — 1.5 5.0 µA VO = 1.8V, IO = –1mA — 35 90 V Voltage difference between input and output VI – VO Output voltage temperature characteristics ∆VO VO –300 –100 +100 ppm /°C dVO dVI • VO Ta = –30°C to +85°C (At the same temperature level) VDD = 3.0V to 15.0V IO = –10mA — 0.1 — %/V Load stability ∆VO Ta = –30°C to +85°C (At the same temperature level) VDD = 3.0V IO = –1mA to –30mA — 20 — mV Supply voltage regulation rejection ratio PSRR VDD = 3.0V, fin = 50kHz CL = 10µF, IO = –10mA — –40 — dB Input voltage stability SCI7810YHA (Ta = –30°C to +85°C shall be assumed except where otherwise specified.) Parameter Symbol Conditions (VSS = 0.0v) Min. Typ. Max. Unit — — 15 V 1.45 1.50 1.55 V VDD = 2.2V to 15.0V No load — 1.5 5.0 µA VO = 1.5V, IO = –1mA — 40 110 V Input voltage VI Output voltage VO VDD = 3.0V, IO = –10mA Ta = 25°C Operating current IOP Voltage difference between input and output VI – VO Output voltage temperature characteristics ∆VO VO –300 –100 +100 ppm /°C dVO dVI • VO Ta = –30°C to +85°C (At the same temperature level) VDD = 3.0V to 15.0V IO = –10mA — 0.1 — %/V Load stability ∆VO Ta = –30°C to +85°C (At the same temperature level) VDD = 3.0V IO = –1mA to –10mA — 20 — mV Supply voltage regulation rejection ratio PSRR VDD = 3.0V, fin = 50kHz CL = 10µF, IO = –10mA — –40 — dB Input voltage stability SCI7000 Series Technical Manual EPSON 3–11 Voltage Regulator Parameter SCI7810Y Series EXAMPLES OF APPLIED CIRCUITS Variable Voltage Circuit 1 The SCI7810Y series consists of 3-pin regulators with fixed output voltage. Their output voltage, however, can be changed providing resistors externally as shown in Figure 3-5. In this case, the output voltage VO is determined by the following formula. Current Boost Circuit Configuring the current boost circuit as shown in Figure 3-4 enables to create a voltage regulator that is capable of providing higher output current at lower operating current. VI PNP transistor V1 VO = VO SCI7810Y But, this arrangement requires to provide bias current (IB) enough to offset increased resistance on R1 that results from operating current (Iopr) of the SCI7810Y series. V0 GND GND R1 + R2 Vr R2 GND VI SCI 7810Y VI Figure 3-4 Current boost circuit VO Vr GND VO R2 IB Iopr R1 Figure 3-5 Providing resistors Variable Voltage Circuit 2 It is also possible to increase output voltage using the SCI7810 series and diode, and configuring the circuit shown in Figure 3-6. The circuit shown in Figure 3-6 takes into consideration of dispersion of the forward voltage VF resulting from the circuit element, temperature and IC’s operating current ISS. This circuit is an example of using forward VI characteristic of the diode, but reverse voltage (Zener diode) can also be utilized depending on a given input voltage. When you want to reduce ISS-dependent dispersion of VF or when ISS is not sufficient as the diode bias current, think of externally adding the resistor R1. VO SCI7810Y CI CO R1 Iss Diode Figure 3-6 3–12 EPSON SCI7000 Series Technical Manual SCI7810Y Series When Higher Input Voltage is Needed When you want to apply an input voltage higher than the rating, add the regulator circuit in to the preceding stage so that the input voltage to the IC becomes less than the rating. See Figure 3-7. NPN transistor SCI7810Y VI VO Voltage Regulator Zener diode Figure 3-7 When Turning On or Off Output The SCI7810Y series products are constantly in the operation mode, so applying an input voltage generates the specified output voltage. If, however, a SCI7810Y series product is connected to the external circuit configured with transistors and resistors (see Figure 3-8), its output voltage can be turned on or off. PNP transistor VI V1 SCI7810Y V0 VO GND On/off control signal NPN transistor Figure 3-8 SCI7000 Series Technical Manual EPSON 3–13 SCI7910Y Series SCI7910Y Series CMOS Negative Voltage Regulators DESCRIPTION APPLICATIONS SCI7910Y series voltage regulators provide step-down and stabilization for an input voltage to a specified fixed voltage. The four devices in the series incorporate a precision, power-saving reference voltage generator, a transistorized differential amplifier and resistors for determining the output voltage. The SCI7910Y series is available in 3-pin plastic SOT89s. • Fixed-voltage power supplies for battery-operated equipment such as portable video cassette recorders, video cameras and radios • Fixed-voltage power supplies for communications equipment • High-stability reference voltage generators FEATURES • • • • Wide range of operating voltages 0.1%/V (Typ.) input stability On-chip reference voltage generator On-chip differential amplifier LINE-UP Voltage (V) Output Current consumption (µA) –1.5 4.0 –1.8 4.0 –3.0 4.0 SCI7910YPA –4.0 4.0 SCI7910YBA –5.0 4.0 Device Input SCI7910YHA SCI7910YGA SCI7910YDA –15 Operating temperature (°C) –40 to 85 PIN CONFIGURATION BLOCK DIAGRAM GND (2 pin) VI 1 GND 2 VO 3 VREF | { VI (1 pin) 3–14 SCI7910Y series VO (3 pin) EPSON SCI7000 Series Technical Manual SCI7910Y Series PIN DESCRIPTION Number Name 1 VI 2 GND 3 VO Description Input voltage Ground Output voltage SPECIFICATIONS Absolute Maximum Ratings Symbol Rating Unit Input voltage VI –18 V Output current IO 100 mA Output voltage VO GND + 0.3 to VI – 0.3 V Power dissipation PD 200 mW Operating temperature range Topr –40 to 85 °C Storage temperature range Tstg –65 to 150 °C Soldering temperature (for 10 s). See note. Tsol 260 °C Voltage Regulator Parameter Note Temperatures during reflow soldering must remain within the limits set out in LSI Device Precautions. Never use solder dip to mount SCI7000 series power supply devices. Electrical Characteristics SCI7910YHA (Ta = –40°C to 85°C) Parameter Input voltage Symbol Conditions (GND = 0.0V) VI — Rating Min. Typ. –15.0 — Max. — Unit V Output voltage VO VI = –3.0V, IO = 10mA Ta = 25°C Operating current IOP VI = –1.5V to –15V — 4.0 18.0 µA –1.57 –1.50 –1.43 V Input/output voltage differential |VI – VO| VI = –1.5V, IO = 5mA — 0.25 0.60 V Input voltage stabilization ratio dVO dVI • VO VI = –3.0V to –15.0V, IO = 5mA — 0.10 — %/V VI = –3.0V, IO = 1mA to 5mA — 20.0 — mV Output voltage drift SCI7000 Series Technical Manual ∆VO EPSON 3–15 SCI7910Y Series SCI7910YGA (VDD = 0V, Ta = –40°C to 85°C unless otherwise noted) Parameter Input voltage Output voltage Operating current Symbol VI VO — VI = –3.0V, IO = 10mA Ta = 25°C Rating Min. Typ. –15.0 — Max. — –1.87 –1.80 –1.73 Unit V V VI = –1.8V to –15.0V — 4.0 18.0 µA VI = –1.8V, IO = 10mA — 0.35 0.70 V |∆VO| VI = –3.0V to –15.0V, |∆VI • VO| IO = 10mA, Isothermal — 0.10 — %/V — 20.0 — mV IDDO Input/output voltage differential |VI – VO| Input voltage stabilization ratio Output voltage drift Conditions ∆VO VI = –3.0V, IO = 1mA to 10mA, Isothermal SCI7910YDA (VDD = 0V, Ta = –40°C to 85°C unless otherwise noted) Parameter Input voltage Output voltage Operating current Symbol Conditions VI VO IDDO — VI = –5.0V, IO = 10mA Ta = 25°C Rating Min. Typ. –15.0 — Max. — –3.07 –3.00 –2.93 Unit V V VI = –3.0V to –15.0V — 4.0 18.0 µA Input/output voltage differential |VI – VO| VI = –3.0V, IO = 10mA — 0.23 0.46 V Input voltage stabilization ratio |∆VO| VI = –4.0V to –15.0V, |∆VI • VO| IO = 10mA, Isothermal — 0.10 — %/V — 30.0 — mV Output voltage drift 3–16 ∆VO VI = –5.0V, IO = 1mA to 30mA EPSON SCI7000 Series Technical Manual SCI7910Y Series SCI7910YPA (VDD = 0V, Ta = –40°C to 85°C unless otherwise noted) Input voltage Output voltage Operating current Symbol Conditions VI VO IDDO — VI = –6.0V, IO = 10mA Ta = 25°C Rating Min. Typ. –15.0 — Max. — –4.10 –4.00 –3.90 Unit V V VI = –4.0V to –15.0V — 4.0 18.0 µA Input/output voltage differential |VI – VO| VI = –4.0V, IO = 10mA — 0.19 0.38 V Input voltage stabilization ratio |∆VO| VI = –5.0V to –15V, |∆VI • VO| IO = 10mA, Isothermal — 0.10 — %/V — 40.0 — mV Output voltage drift ∆VO VI = –7V, IO = 1mA to 30mA SCI7910YBA (VDD = 0V, Ta = –40°C to 85°C unless otherwise noted) Parameter Input voltage Output voltage Operating current Symbol Conditions VI VO IDDO — VI = –7.0V, IO = 10mA Ta = 25°C Rating Min. Typ. –15.0 — Max. — –5.10 –5.00 –4.90 Unit V V VI = –5.0V to –15.0V — 4.0 18.0 µA Input/output voltage differential |VI – VO| VI = –5.0V, IO = 10mA — 0.17 0.34 V Input voltage stabilization ratio |∆VO| VI = –6.0V to –15.0V, |∆VI • VO| IO = 10mA, Isothermal — 0.10 — %/V — 50.0 — mV Output voltage drift SCI7000 Series Technical Manual ∆VO VI = –7.0V, IO = 1mA to 50mA EPSON 3–17 Voltage Regulator Parameter SCI7910Y Series Typical Performance Characteristics SCI7910YBA 6.0 7.0 6.0 5.0 5.0 4.0 IOP [µA] IOP [µA] Ta = 25˚C IO = 0mA VI = 7V 4.0 3.0 3.0 2.0 2.0 1.0 1.0 0.0 –40 –20 0.0 0 20 40 60 80 100 0 –5 –10 Ta [˚C] –15 VI [V] IOP – Ta IOP – VI 1.2 0.8 VI = 4.9V Ta = 25˚C VI = –4.9V 0.7 1.0 0.6 IO = 50mA |VI–VO| [V] |VO–VI| [V] 0.8 0.6 0.4 0.5 0.4 0.3 0.2 0.2 IO = 10mA 0.0 –40 –20 0.1 0.0 0 20 40 60 80 100 Ta [˚C] 10 20 30 40 50 IO [mA] |VO – VI| – Ta 3–18 0 |VI – VO| – IO EPSON SCI7000 Series Technical Manual SCI7910Y Series –6.0 –5.5 VI = –7V IO = 10mA IO = 10mA –5.0 VO [V] VO [V] –4.0 –5.0 –3.0 –2.0 IO = 50mA –1.0 0.0 0 20 40 60 80 100 0 –5 Ta [˚C] –10 –15 VI [V] VO – Ta VO – VI –5.5 40 Ta = 25˚C VI = –7V VI = –7V 1mA ≤ IO ≤ 50mA VO [V] ∆VO [mV] 30 20 –5.0 10 0 –40 –20 –4.5 0 20 40 60 80 100 0 Ta [˚C] 20 30 40 50 IO [mA] ∆VO – Ta SCI7000 Series Technical Manual 10 VO – IO EPSON 3–19 Voltage Regulator Ta = 25˚C –4.5 –40 –20 SCI7910Y Series SCI7910YPA 6.0 7.0 6.0 5.0 5.0 4.0 IOP [µA] IOP [µA] Ta = 25˚C IO = 0mA VI = –7V 4.0 3.0 3.0 2.0 2.0 1.0 1.0 0.0 –40 –20 0.0 0 20 40 60 80 100 0 –5 Ta [˚C] –10 –15 VI [V] IOP – Ta IOP – VI 1.2 0.8 VI = –3.9V Ta = 25˚C VI = –3.9V 0.7 1.0 0.6 |VI–VO| [V] |VO–VI| [V] 0.8 0.6 IO = 30mA 0.4 0.5 0.4 0.3 0.2 0.2 IO = 10mA 0.0 –40 –20 0.1 0.0 0 20 40 60 80 100 8 16 24 32 40 IO [mA] Ta [˚C] |VO – VI| – Ta 3–20 0 |VI – VO| – IO EPSON SCI7000 Series Technical Manual SCI7910Y Series –6.0 –4.5 VI = –7V IO = 10mA –5.0 IO = 10mA VO [V] VO [V] –4.0 –4.0 –3.0 –2.0 –1.0 0 20 40 60 80 100 Ta = 25˚C IO = 30mA 0.0 0 –5 Ta [˚C] –10 –15 VI [V] VO – Ta VO – VI –4.5 40 VI = –7V 1mA ≤ IO ≤ 30mA Ta = 25˚C VI = –7V VO [V] ∆VO [mV] 30 20 –4.0 10 0 –40 –20 –3.5 0 20 40 60 80 100 Ta [˚C] 8 16 24 32 40 IO [mA] ∆VO – Ta SCI7000 Series Technical Manual 0 VO – IO EPSON 3–21 Voltage Regulator –3.5 –40 –20 IO = 50mA SCI7910Y Series SCI7910YDA 6.0 7.0 6.0 5.0 5.0 4.0 IOP [µA] IOP [µA] Ta = 25˚C IO = 0mA VI = –5V 4.0 3.0 3.0 2.0 2.0 1.0 1.0 0.0 –40 –20 0.0 0 20 40 60 80 100 0 –5 –10 Ta [˚C] –15 VI [V] IOP – Ta IOP – VI 1.2 0.8 VI = –2.93V Ta = 25˚C VI = –2.93V 0.7 1.0 0.6 |VI–VO| [V] |VO–VI| [V] 0.8 IO = 30mA 0.6 0.4 0.5 0.4 0.3 0.2 0.2 IO = 10mA 0.1 0.0 –40 –20 0.0 0 20 40 60 80 100 0 Ta [˚C] 12 18 24 30 IO [mA] |VO – VI| – Ta 3–22 6 |VI – VO| – IO EPSON SCI7000 Series Technical Manual SCI7910Y Series –3.5 –6.0 VI = –5V IO = 10mA –5.0 VO [V] VO [V] –4.0 –3.0 IO = 10mA –3.0 –2.0 –1.0 IO = 30mA Ta = 25˚C 0.0 0 20 40 60 80 0 100 –5 –10 –15 VI [V] Ta [˚C] VO – Ta VO – VI –3.5 40 VI = –5V 1mA ≤ IO ≤ 30mA Ta = 25˚C VI = –5V VO [V] ∆VO [mV] 30 20 –3.0 10 0 –40 –20 –2.5 0 20 40 60 80 100 ∆VO – Ta SCI7000 Series Technical Manual 0 6 12 18 24 30 IO [mA] Ta [˚C] VO – IO EPSON 3–23 Voltage Regulator –2.5 –40 –20 SCI7910Y Series SCI7910YGA 6.0 7.0 6.0 5.0 5.0 4.0 IOP [µA] IOP [µA] Ta = 25˚C IO = 0mA VI = –3V 4.0 3.0 3.0 2.0 2.0 1.0 1.0 0.0 –40 –20 0.0 0 20 40 60 80 0 100 –5 –10 Ta [˚C] –15 VI [V] IOP – Ta IOP – VI 1.2 0.8 VI = –1.75V Ta = 25˚C VI = –1.75V 0.7 1.0 0.6 |VI–VO| [V] |VO–VI| [V] 0.8 0.6 0.4 0.0 0 20 40 60 80 100 0 2 4 6 8 10 IO [mA] Ta [˚C] |VO – VI| – Ta 3–24 0.3 0.1 IO = 1mA 0.0 –40 –20 0.4 0.2 IO = 5mA 0.2 0.5 |VI – VO| – IO EPSON SCI7000 Series Technical Manual SCI7910Y Series –2.5 –6.0 VI = –3V IO = 1mA –5.0 VO [V] –2.0 –3.0 IO = 10mA –2.0 –1.0 IO = 50mA Ta = 25˚C IO = 30mA –1.5 –40 –20 0.0 0 20 40 60 80 100 0 –5 –10 Ta [˚C] –15 VI [V] VO – Ta VO – VI –2.5 40 VI = –3V 1mA ≤ IO ≤ 10mA Ta = 25˚C VI = –3V VO [V] ∆VO [mV] 30 20 –2.0 10 0 –40 –20 0 20 40 60 80 100 Ta [˚C] 0 2 4 6 8 10 IO [mA] ∆VO – Ta SCI7000 Series Technical Manual –1.5 VO – IO EPSON 3–25 Voltage Regulator VO [V] –4.0 SCI7910Y Series SCI7910YHA 6.0 7.0 Ta = 25˚C IO = 0mA VI = –3V 6.0 5.0 4.0 IOP [µA] IOP [µA] 5.0 4.0 3.0 3.0 2.0 2.0 1.0 1.0 0.0 –40 –20 0.0 0 20 40 60 80 100 0 –5 –10 Ta [˚C] –15 VI [V] IOP – Ta IOP – VI 1.2 0.8 VI = –1.45V Ta = 25˚C VI = –1.45V 0.7 1.0 0.6 |VI–VO| [V] |VO–VI| [V] 0.8 0.6 0.4 IO = 5mA 0.3 0.1 IO = 1mA 0.0 0 20 40 60 80 100 0 2 4 6 8 10 IO [mA] Ta [˚C] |VO – VI| – Ta 3–26 0.4 0.2 0.2 0.0 –40 –20 0.5 |VI – VO| – IO EPSON SCI7000 Series Technical Manual SCI7910Y Series –6.0 –2.0 VI = –3V IO = 1mA –5.0 VO [V] –1.5 –3.0 –2.0 IO = 1mA –1.0 –1.0 –40 –20 IO = 30mA Ta = 25˚C IO = 10mA 0.0 0 20 40 60 80 0 100 –5 –10 –15 VI [V] Ta [˚C] VO – Ta VO – VI –2.0 40 VI = –3V 1mA ≤ IO ≤ 10mA Ta = 25˚C VI = –3V VO [V] ∆VO [mV] 30 20 –1.5 10 0 –40 –20 –1.0 0 20 40 60 80 100 Ta [˚C] 2 4 6 8 10 IO [mA] ∆VO – Ta SCI7000 Series Technical Manual 0 VO – IO EPSON 3–27 Voltage Regulator VO [V] –4.0 SCI7910Y Series PACKAGE MARKINGS The markings on SCI7910Y series device packages use the following abbreviations. Parameter Output voltage code Voltage regulator code Code Description B 5V D 3V P Positive N Negative Marking locations Note The reflow furnace temperature profile requirements must be satisfied during package reflow. Avoid soldering on surface mount package (including SOT89) as it causes a quick temperature change of package and a device damage. Output volta code Voltage regulator code FUNCTIONAL DESCRIPTION Basic Operation The SCI7910Y series uses a 3-pin series regulator feedback loop. An operational amplifier compares VREG from the voltage divider formed by R1 and R2, with VREF. The amplifier output adjusts the output transistor gate bias to equalize the voltages and compensate for fluctuations in VI. Internal Circuits Reference voltage generator The offset structure used in all three transistors results in a high breakdown voltage that ensures a stable reference voltage output over a wide range of input voltages. VSS Enhancement mode VREF GND Depletion mode VREF R1 | { Depletion mode VREG R2 VI VO V1 The following equation shows the relationship between VO and VREF. R1 + R2 VO = ————— VREF R1 3–28 EPSON SCI7000 Series Technical Manual SCI7910Y Series Differential amplifier The built-in differential amplifier generates a potential at point X that adjusts the gate bias of the output transistor if there is any difference betweeen VREF and VREG. Output transistor The output side of the p-channel MOS transistors in the output transistor circuit is connected to the voltage divider resistors in the feedback loop. VSS VSS R1 VREF VREF P1 VREG VREG P2 R2 To output transistor X VO { | N2 Voltage Regulator N1 V1 VI TYPICAL APPLICATIONS Current Booster At the cost of a small increase in current consumption, the voltage is regulated while maintaining high current output. The following equation shows the relationship between the old and new voltages. R1 + R2 VO = ————— VR R2 VSS Note that the application must supply a bias current, IB, high enough to offset the increase in voltage across R1 due to Iopr. An alternative circuit for raising the output voltage is shown in the following figure. GND VI VO SCI7910Y VSS VI VO External Voltage Converter The following circuit raises the output voltage of a SCI7910Y series IC. ISS CI CO R1 GND VI VI SCI7910Y VO VO VSS R1 Iopr IB GND VI VI SCI7000 Series Technical Manual SCI7910Y Vr VO R2 VO This configuration, however, introduces two design problems. 1. It reduces the output voltage by VF, the forward voltage drop across the diode. 2. It is sensitive to fluctuations in VF due to differences in diodes, operating temperatures and ISS. EPSON 3–29 SCI7910Y Series R1 helps reduce the affect of ISS on VF. It is also required when ISS is lower than the diode bias current. For certain input voltages, a Zener diode with the reverse polarity can be used. Switching output SCI7910Y series devices are designed for continuous operation. An external switching circuit allows the regulated output to be switched ON and OFF. High Input Voltages A preliminary regulator circuit is required to bring the input voltage within the SCI7910Y series rated range. VSS ON/OFF control signal VSS GND VI VI SCI7910Y VO VO GND VI 3–30 VI SCI7910Y VO VO Note) Temperatures during reflow soldering must remain within the limits set out under LSI Device Precautions in this catalog. Do not immerse QFP and SOT89 packages during soldering, as the rapid temperature gradient during dipping can cause damage. EPSON SCI7000 Series Technical Manual s gu or lat in e gR h itc / DC DC 4. Sw SCI7630 Series The SCI7630 series of CMOS switching regulators comprises nine series—the SCI7631, SCI7638 series featuring built-in RC oscillators, the SCI7633 series requiring external crystal oscillators. SCI7631, SCI7638 Series CMOS Switching Regulators The SCI7631, SCI7638 series of CMOS switching regulators provide input voltage step-up and regulation to a specified fixed voltage using an external coil. The devices in these series incorporate precision, low-power reference voltage generators and transistors for driving an internal comparator. They feature low power consumption, low operating voltages, voltage detection and standby operation. The devices offer a range of fixed output voltages, from 2.0 to 5.0V. The SCI7631 series features battery backup and power-on clear, the SCI7638 series features power-on clear and response compensation, the SCI7638 series offer an output voltage temperature characteristic for driving an LCD. They are available in 8-pin SOP3s. APPLICATIONS • Fixed-voltage power supplies for battery-operated equipment such as portable video cassette recorders, video cameras and radios • Power supplies for pagers, memory cards, calculators and similar hand-held equipment • Fixed-voltage power supplies for medical equipment • Fixed-voltage power supplies for communications equipment • Power supplies for microcomputers • Uninterruptable power supplies • LCD panel supplies Switching Regulator DESCRIPTION FEATURES • • • • • • • • 0.9V (Min.) operating voltage 10µA (Typ.) maximum current consumption Standby operation 3µA (Typ.) standby current consumption 1.05 ±0.05V high-accuracy voltage detection Battery backup (available on SCI7631 series) On-chip RC oscillator Power-on clear (available on SCI7631 and SCI7638 series) • Output voltage temperature characteristic for driving an LCD (available on SCI7638 series) • 8-pin SOP3 LINE-UP Voltage (V) Device Multiplication frequency source Input Output 1.5 3.0 On-chip RC SCI7631MKA (0.9 min.) 3.5 oscillator SCI7631MAA 5.0 SCI7631MLA SCI7631MBA SCI7638MHA Power-on clear Battery backup Response compensation Output voltage temperature characteristic 2.4 1.5 SCI7638MLA (0.9 min.) SCI7000 Series Technical Manual Voltage detection Package SOP3-8pin 2.2 On-chip RC 2.4 oscillator Yes Yes No No Yes SOP3-8pin SOP3-8pin No EPSON SOP3-8pin Yes –4.5 mV/˚C SOP3-8pin –4.0 mV/˚C SOP3-8pin 4–1 SCI7630 Series BLOCK DIAGRAMS SCI7631 Series RST PWCR VI2 VI1 VSW Reference voltage generator RC oscillator VO Control switch GND PS SCI7638 Series RST PWCR VI VSW – + VO – + Reference voltage generator Control switch VCONT GND RC oscillator PS 4–2 EPSON SCI7000 Series Technical Manual SCI7630 Series PIN CONFIGURATIONS SCI7638 Series SCI7631 Series PWCR RST 2 GND 3 VSW 4 PS PWCR 1 8 PS 7 VI1 RST 2 7 VI 6 VI2 GND 3 6 VCONT 5 VO VSW 4 5 VO 8 1 SCI7631 series SCI7638 series PIN DESCRIPTIONS SCI7631 Series Number Name Description 1 PWCR 2 RST Reset signal output. See note 1. 3 GND Ground 4 VSW External inductor drive 5 VO Output votlage 6 VI2 Backup input voltage 7 VI1 Step-up input voltage 8 PS Power save. See note 2. Switching Regulator Power-on clear. See note 1. Notes 1. See voltage detection and power-on clear in the functional description. 2. See standby mode and battery backup in the functional description. SCI7638 Series Number Name Description 1 PWCR 2 RST Reset signal output. See note 1. 3 GND Ground 4 VSW External inductor drive 5 VO 6 VCONT Power-on clear. See note 1. Output votlage Comparator input 7 VI1 Step-up input voltage 8 PS Power save. See note 2. Notes 1. See voltage detection and power-on clear in the functional description. 2. See standby mode and battery backup in the functional description. SCI7000 Series Technical Manual EPSON 4–3 SCI7630 Series SPECIFICATIONS Absolute Maximum Ratings SCI7631 series Symbol Rating Input voltage Parameter VI1 7 V Output current IO 100 mA Output voltage VO 7 V Power dissipation PD 200 (SOP3) 300 (DIP) Unit mW Operating temperature range Topr –30 to 85 ˚C Storage temperature range Tstg –65 to 150 ˚C Soldering temperature (for 10 s). See note. Tsol 260 ˚C Notes Temperatures during reflow soldering must remain within the limits set out in LSI Device Precautions. Never use solder dip to mount SCI7000 series power supply devices. SCI7638 series Symbol Rating Input voltage Parameter VI1 7 V Output current IO 100 mA Output voltage VO 7 V Power dissipation PD 200 (SOP3) 300 (DIP) Unit mW Operating temperature range Topr –30 to 85 ˚C Storage temperature range Tstg –65 to 150 ˚C Soldering temperature (for 10 s). See note. Tsol 260 ˚C Symbol Rating Unit Input voltage Parameter VI 7 V Output voltage VO 7 V Power dissipation PD 250 mW Operating temperature range Topr –30 to 85 ˚C Storage temperature range Tstg –65 to 150 ˚C Notes Temperatures during reflow soldering must remain within the limits set out in LSI Device Precautions. Never use solder dip to mount SCI7000 series power supply devices. 4–4 EPSON SCI7000 Series Technical Manual SCI7630 Series Electrical Characteristics SCI7631MLA VSS = 0V, Ta = 25 ˚C unless otherwise noted Symbol Output voltage Detection voltage Detection voltage hysteresis ratio Operating current Standby current VI1 VI2 VO VDET ∆VDET IDDO IDDS Switching transistor ON resistance RSWON Switching transistor leakage current ISWQ Input voltage Backup switch ON resistance Backup switching leakage current RST LOW-level output current PS pull-up current Multiplication clock frequency RBSON IBSQ IOL IIH fCLK Condition VO > VI2 Vl1 = 1.5V VI1 = 1.5V, IO = 1.0mA VI1 = 1.5V VI1 = 1.5V, VO = 2.4V, VSW = 0.2V VI1 = 1.5V, VO = 1.5V, VSW = 7.0V VI1 = 1.0V, VI2 = 1.5V, IO = 1.0mA VI1 = 1.0V, VO = 2.4V, VI2 = 2.0V VI1 = 0.9V, VDS = 0.2V VI1 = 1.5V VI1 = 1.5V Min. 0.9 0.9 2.32 1.00 — — — Rating Typ. — — 2.40 1.05 5 7 3 Max. 1.8 1.8 2.48 1.10 — 35 10 — 7 14 Ω — — 0.5 µA — 100 250 Ω — — 0.1 µA 0.05 — 25 0.15 — 35 — 0.5 45 mA µA kHz Min. 0.9 0.9 2.90 1.00 — — — Rating Typ. — — 3.00 1.05 5 8 3 Max. 2.0 2.0 3.10 1.10 — 40 10 — 6 12 Ω — — 0.5 µA — 70 160 Ω — — 0.1 µA 0.05 — 30 0.15 — 40 — 0.5 50 mA µA kHz Unit V V V V % µA µA SCI7631MBA VSS = 0V, Ta = 25 ˚C unless otherwise noted Parameter Symbol Output voltage Detection voltage Detection voltage hysteresis ratio Operating current Standby current VI1 VI2 VO VDET ∆VDET IDDO IDDS Switching transistor ON resistance RSWON Switching transistor leakage current ISWQ Input voltage Backup switch ON resistance Backup switching leakage current RST LOW-level output current PS pull-up current Multiplication clock frequency SCI7000 Series Technical Manual RBSON IBSQ IOL IIH fCLK Condition VO > VI2 Vl1 = 1.5V VI1 = 1.5V, IO = 1.0mA VI1 = 1.5V VI1 = 1.5V, VO = 3.0V, VSW = 0.2V VI1 = 1.5V, VO = 1.5V, VSW = 7.0V VI1 = 1.0V, VI2 = 2.0V, IO = 1.0mA VI1 = 1.0V, VO = 3.0V, VI2 = 2.0V VI1 = 0.9V, VDS = 0.2V VI1 = 1.5V VI1 = 1.5V EPSON Unit V V V V % µA µA 4–5 Switching Regulator Parameter SCI7630 Series SCI7631MKA VSS = 0V, Ta = 25 ˚C unless otherwise noted Parameter Symbol Output voltage Detection voltage Detection voltage hysteresis ratio Operating current Standby current VI1 VI2 VO VDET ∆VDET IDDO IDDS Switching transistor ON resistance RSWON Switching transistor leakage current ISWQ Input voltage Backup switch ON resistance Backup switching leakage current RST LOW-level output current PS pull-up current Multiplication clock frequency RBSON IBSQ IOL IIH fCLK Condition VO > VI2 Vl1 = 1.5V VI1 = 1.5V, IO = 1.0mA VI1 = 1.5V VI1 = 1.5V, VO = 3.5V, VSW = 0.2V VI1 = 1.5V, VO = 1.5V, VSW = 7.0V VI1 = 1.0V, VI2 = 2.0V, IO = 1.0mA VI1 = 1.0V, VO = 3.5V, VI2 = 2.0V VI1 = 0.9V, VDS = 0.2V VI1 = 1.5V VI1 = 1.5V Min. 0.9 0.9 3.40 1.00 — — — Rating Typ. — — 3.50 1.05 5 8 3 Max. 2.0 2.0 3.60 1.10 — 40 10 — 6 12 Ω — — 0.5 µA — 70 160 Ω — — 0.1 µA 0.05 — 30 0.15 — 40 — 0.5 50 mA µA kHz Min. 0.9 0.9 4.80 1.00 — — — Rating Typ. — — 5.00 1.05 5 10 3 Max. 2.0 2.0 5.20 1.10 — 50 10 — 5 10 Ω — — 0.5 µA — 50 100 Ω — — 0.1 µA 0.05 — 35 0.15 — 45 — 0.5 55 mA µA kHz Unit V V V V % µA µA SCI7631MAA VSS = 0V, Ta = 25 ˚C unless otherwise noted Parameter Symbol Output voltage Detection voltage Detection voltage hysteresis ratio Operating current Standby current VI1 VI2 VO VDET ∆VDET IDDO IDDS Switching transistor ON resistance RSWON Switching transistor leakage current ISWQ Input voltage Backup switch ON resistance Backup switching leakage current RST LOW-level output current PS pull-up current Multiplication clock frequency 4–6 RBSON IBSQ IOL IIH fCLK Condition VO > VI2 Vl1 = 1.5V VI1 = 1.5V, IO = 1.0mA VI1 = 1.5V VI1 = 1.5V, VO = 5.0V, VSW = 0.2V VI1 = 1.5V, VO = 1.5V, VSW = 7.0V VI1 = 1.0V, VI2 = 3.0V, IO = 1.0mA VI1 = 1.0V, VO = 5.0V, VI2 = 3.0V VI1 = 0.9V, VDS = 0.2V VI1 = 1.5V VI1 = 1.5V EPSON Unit V V V V % µA µA SCI7000 Series Technical Manual SCI7630 Series SCI7638MHA VSS = 0V, Ta = 25 ˚C unless otherwise noted Parameter Symbol Input voltage Output voltage Output voltage temperature gradient Detection voltage Detection voltage hysteresis ratio Operating current Standby current VI1 VO Kt VDET ∆VDET IDDO IDDS Switching transistor ON resistance RSWON Switching transistor leakage current ISWQ IOL IIH fCLK Vl1 = 1.5V VI1 = 1.5V, IO = 1.0mA VI1 = 1.5V VI1 = 1.5V, VO = 2.2V, VSW = 0.2V VI1 = 1.5V, VO = 1.5V, VSW = 7.0V VI1 = 0.9V, VOL = 0.2V VI1 = 1.5V VI1 = 1.5V Min. 0.9 2.10 –5.5 1.00 — — — Rating Typ. — 2.20 –4.5 1.05 5 7 3 Max. 2.0 2.30 –3.5 1.10 — 35 10 V V mV/˚C V % µA µA — 7 14 Ω — — 0.5 µA 0.05 — 25 0.15 — 35 — 0.5 45 mA µA kHz Mmin. 0.9 2.30 –5.5 1.00 — — — Rating Typ. — 2.40 –4.0 1.05 5 7 3 Max. 2.0 2.50 –3.5 1.10 — 35 10 V V mV/˚C V % µA µA — 7 14 Ω — — 0.5 µA 0.05 — 25 0.15 — 35 — 0.5 45 mA µA kHz Unit Switching Regulator RST LOW-level output current PS pull-up current Multiplication clock frequency Condition SCI7638MLA VSS = 0V, Ta = 25 ˚C unless otherwise noted Parameter Symbol Input voltage Output voltage Output voltage temperature gradient Detection voltage Detection voltage hysteresis ratio Operating current Standby current VI1 VO Kt VDET ∆VDET IDDO IDDS Switching transistor ON resistance RSWON Switching transistor leakage current ISWQ RST LOW-level output current PS pull-up current Multiplication clock frequency SCI7000 Series Technical Manual IOL IIH fCLK Condition Vl1 = 1.5V VI1 = 1.5V, IO = 1.0mA VI1 = 1.5V VI1 = 1.5V, VO = 2.4V, VSW = 0.2V VI1 = 1.5V, VO = 1.5V, VSW = 7.0V VI1 = 0.9V, VOL = 0.2V VI1 = 1.5V VI1 = 1.5V EPSON Unit 4–7 SCI7630 Series Typical Performance Characteristics Standby current vs. ambient temperature 2.0 5 Ta = 25 ˚C VI1 = 1.5 V 4 1.5 Standby current (µA) Fixed output voltage temperature characteristic (mV/ ˚C) Fixed-output voltage temperature characteristic 1.0 3 2 0.5 1 0.0 0 1 2 3 4 Fixed output voltage (V) 5 0 –30 6 0 25 50 75 85 Ambient temperature (˚C) Detection voltage vs. ambient temperature 1.15 Detection voltage (V) VREL 1.10 VDET 1.05 1.00 0.95 –30 0 50 25 Ambient temperature (˚C) 75 85 SCI7638MHA and SCI7638MLA Clock frequency VS. Input voltage Clock frequency vs. ambient temperature 60 60 VI1 = 1.5 V Ta = 25 ˚C 50 Clock frequency (kHz) Clock frequency (kHz) 50 40 30 4–8 30 20 20 10 0.5 40 1.0 1.5 Input voltage (V) 2.0 10 –30 2.5 EPSON 0 25 50 Ambient temperature (˚C) 85 SCI7000 Series Technical Manual SCI7630 Series Output voltage vs. ambient temperature (SCI7638MLA) Output voltage vs. ambient temperature (SCI7638MHA) Output Voltage (V) Output Voltage (V) 2.5 2.0 2.5 2.0 1.5 –30 0 25 50 Ambient temperature (˚C) 75 –30 85 0 25 50 Ambient temperature (˚C) 75 85 SCI7631MBA, SCI7631MKA Clock frequency vs. input voltage Clock frequency vs. ambient temperature 60 VI1 = 1.5 V 50 50 Clock frequency (kHz) Clock frequency (kHz) Switching Regulator 60 Ta = 25 deg.C 40 30 20 40 30 20 10 0.5 1.0 1.5 Input voltage (V) 2.0 10 –30 2.5 0 25 50 Ambient temperature (˚C) 85 SCI7631MAA Clock frequency vs. ambient temperature Clock frequency vs. input voltage 60 60 VI1 = 1.5 V Ta = 25 ˚C 50 Clock frequency (kHz) Clock frequency (kHz) 50 40 30 20 10 0.5 SCI7000 Series Technical Manual 40 30 20 1.0 1.5 Input voltage (V) 2.0 10 –30 2.5 EPSON 0 25 50 Ambient temperature (˚C) 85 4–9 SCI7630 Series Load Characteristics SCI7631MAA 10 5.5 Ta = 25 ˚C fCLK = 32 kHz 4.5 VI1 = 1.5 V VI1 = 1.0 V VI1 = 1.25 V 3.5 Peff 50 5 Load efficiency (%) Maximum load current (mA) Output voltage (V) 5.0 4.0 100 Ta = 25 ˚C fCLK = 32 kHz ILmax 3.0 2.5 0 5 Load current (mA) 0 100 10 0 200 300 500 1000 Inductence (µH) Notes Inductor: TDK NLF453232-221k (220µH) Diode: Shindengen DINS4 Schottky barrier diode Capacitor: NEC MSUB20J106M (10µF) Notes 1. VI1 = 1.5V 2. Inductor: TDK NLF453232 series Diode: Shindengen DINS4 Schottky barrier diode Capacitor: NEC MSUB20J106M (10µF) SCI7631MBA 4.0 12 100 Ta = 25 ˚C fCLK = 32 kHz fCLK = 32.8 kHz 3.0 2.5 VI1 = 1.5 V VI1 = 1.25 V VI1 = 1.0 V 2.0 1.5 Peff 8 6 50 ILmax 4 2 1.0 0 5 10 15 Load current (mA) 20 0 25 Notes Inductor: TDK NLF453232-221k (220µH) Diode: Shindengen DINS4 Schottky barrier diode Capacitor: NEC MSUB20J106M (10µF) 4–10 10 Load efficiency (%) Maximum load current (mA) Output voltage (V) 3.5 100 200 300 500 Inductance (µH) 1000 0 Notes 1. VI1 = 1.5V 2. Inductor: TDK NLF453232 series Diode: Shindengen DINS4 Schottky barrier diode Capacitor: NEC MSUB20J106M (10µF) EPSON SCI7000 Series Technical Manual SCI7630 Series SCI7638MLA 4.0 15 Ta = 25 ˚C fCLK = 40 kHz fCLK = 35 kHz 3.0 2.5 2.0 VI = 1.0 V V = 1.25 V V = 1.5 V 1.5 1.0 100 ILmax 10 Peff 50 Load efficiency (%) Maximum load current (mA) Output voltage (V) 3.5 5 5 0 10 15 20 0 25 100 200 Load current (mA) Notes Inductor: TDK NLF453232-221k (220µH) Diode: Shindengen DINS4 Schottky barrier diode Capacitor: NEC MSUB20J106M (10µF) 300 500 Inductance (µH) 1000 0 Notes 1. VI1 = 1.5V 2. Inductor: TDK NLF453232 series Diode: Shindengen DINS4 Schottky barrier diode Capacitor: NEC MSUB20J106M (10µF) 15 ILmax Ta = 25 ˚C fCLK = 35kHz fCLK = 35 kHz Maximum load current (mA) Output voltage (V) 3.5 3.0 2.5 2.0 VI1 = 1.0 V VI1 = 1.25 V VI1 = 1.5 V 1.5 100 10 Peff 50 Load efficiency (%) 4.0 1.0 Switching Regulator SCI7638MHA 5 0 5 10 15 20 100 25 Load current (mA) Notes Inductor: TDK NLF453232-221k (220µH) Diode: Shindengen DINS4 Schottky barrier diode Capacitor: NEC MSUB20J106M (10µF) SCI7000 Series Technical Manual 200 500 300 Inductance (µH) 1000 0 Notes 1. VI1 = 1.5V 2. Inductor: TDK NLF453232 series Diode: Shindengen DINS4 Schottky barrier diode Capacitor: NEC MSUB20J106M (10µF) EPSON 4–11 SCI7630 Series Reset delays SCI7631MAA SCI7631MKA 200 150 150 tpd (msec) tpd (msec) R = 200 kΩ 200 R = 100 kΩ 100 100 50 0 0.1 R = 200 kΩ R = 100 kΩ 50 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0 0.1 1.0 0.2 C (µF) SCI7631MBA 0.4 1.0 200 R = 200 kΩ R = 200 kΩ 150 tpd (msec) 150 100 100 R = 100 kΩ R = 100 kΩ 50 50 0 0.1 0.5 0.6 0.7 0.8 SCI7631MLA and SCI7638MLA 200 tpd (msec) 0.3 C (µF) 0.2 0.3 0.4 C (µF) 0.5 0.6 0.7 0.8 0 0.1 1.0 0.2 0.3 0.4 C (µF) 0.5 0.6 0.7 0.8 1.0 SCI7638MHA 200 R = 200 kΩ tpd (msec) 150 100 R = 100 kΩ 50 0 0.1 4–12 0.2 0.3 0.4 C (µF) 0.5 0.6 0.7 0.8 1.0 EPSON SCI7000 Series Technical Manual SCI7630 Series Timing diagram Measurement circuit VO VO VI1 R 100 kΩ PWCR RST C PWCR RST tpd PACKAGE MARKINGS 7631 Switching Regulator SCI7631, SCI7638 series device packages use the following markings. Series number First subcode character Second subcode character Code number FUNCTIONAL DESCRIPTION Basic Voltage Booster Operation TR1 switches ON and OFF at half the frequency of the clock pulses from the built-in RC oscillator. When the transistor is ON, the circuit stores energy in L. When it is off, this energy flows through D to change C. VI1 L D Tr1 VO C Internal Circuits RC oscillator The SCI7631, SCI7638 series use a built-in RC oscillator to drive the voltage booster circuit. The circuit is supplied by VI1. All circuit components are on-chip and thus the drive frequency is set internally. To ensure 50% duty, this frequency is twice that used by the voltage booster circuit. When PS is LOW, the oscillator is disabled and the chip is in standby mode. PS GND GND C R SCI7000 Series Technical Manual EPSON 4–13 SCI7630 Series Reference voltage generator and output voltage regulator SCI7631M The reference voltage generator regulates VI1 to generate a votlage for the voltage regulator and voltage detection circuits. The voltage regulator regulates the boosted output votlage. This is determined by the level at point A between the two resistors connecting VO and GND. These series use an on-chip resistor to set the output at a specified voltage. Reference voltage generator VO Voltage detector R2 RST Tr2 VO VO VI1 R1 PWCR – + Tr1 C1 Output voltage regulator VI1 VSW RC oscillator VO A + – GND Note In step-up voltage operation, the ripple voltage created by the switching operation is large relative to the output voltage described above. This ripple voltage is affected by external components and load conditions. The user is advised to check this voltage carefully. VO returns to its normal value when the voltage of PWCR increases and TR2 turns OFF, so that RST returns to VO after a delay specified by the time coefficient of R1 and C1. Thus, after normal output has been obtained, a reset pulse of adjustable width can be obtained which can reset a system connected to RST. The output from RST is an N-channel, open-drain. When VI1 exceeds VDET, the drain is opened and, when VI1 drops below VDET again, the output transistor conducts and the output is grounded. The characteristic response is shown in the following figure. VREL VI1 VDET VO PWCR VGND VO Voltage detection RST The SCI7631, SCI7632, SCI7638, and SCI7639 series are equipped with a built-in voltage detection function. The detection voltage, VDET, is fixed internally at 1.05 ± 0.05V. Power-on clear function The SCI7631 series and SCI7638 series are equipped with a built-in power-on clear function. As shown in the following figure, R1 and C1 are connected to PWCR, and R2 is connected to RST to operate the function. If VI1 drops below VDET, TR1 and TR2 conduct and PWCR and RST are grounded. If VI1 recovers and rises higher than VREL, TR1 turns OFF. The detection voltage hysteresis is 5% (Typ.) and VREL is VDET × 1.05 (Typ.). 4–14 VGND Disabling power-on clear Always connect PWCR to either VO or GND. If voltage detection only is required, remove the resistor between PWCR and VO and monitor the level at RST. If neither function is required, connect PWCR to GND. Leaving PWCR unconnected results in an undefined inverter gate voltage in the VO circuit, causing transient currents to flow between VO and GND. EPSON SCI7000 Series Technical Manual SCI7630 Series In standby mode, the booster, including the crystal oscillator, is disabled (the switching transistor used to drive the inductor is turned OFF) and the built-in backup switch is turned ON, so that the input voltage at VI2 is output at VO. This enables the battery backup function. PS is pulled-up internally, so when standby mode is not required, the pin should be left open. VO circuit PWCR VI1 circuit VI1 RST Powering up The SCI7638 series are provided with a response compensation input. A response compensation capacitor is connected between VCONT and VO, allowing the ripple voltage generated by the boosted output voltage to be suppressed to a minimum. VI2 Battery PS C Standby mode and battery backup Switching Regulator – + Output voltage response compensation Ensure that V0 is at least the minimum operating voltage (0.9V) before switching on the booster circuit. One way to do this is to attach a battery so that V0 never drops below the minimum required for backup mode. If no such external power supply is available, connect VI2 to VI1 and hold PS LOW when applying power for the first time. SCI7631M The SCI7631 series are equipped with a standby mode, initiated by connecting PS to GND. TYPICAL APPLICATIONS Example Circuits The output current, I O, and power conversion efficiency, Peff of a particular device in a series depends on factors such as the switching frequency, type of coil, and the size and type of other external components. SCI7631 series SCI7638 series L L D VSW VSW VO VI1 VI2 VO VI1 SCI7638M/C SCI7631M/C GND GND PWCR R1 PS SCI7000 Series Technical Manual D VCONT C1 C1 PWCR PS RST RST EPSON 4–15 SCI7630 Series Notes ■ 100µH ≤ L ≤ 1mH, C ≤ 10µF, D = Schottky diode ■ SCI7631MAA • Peff = 70% when L = 220µH (leadless inductor), VI1 = 1.5V, fCLK = 32kHz, IO = 4mA • Peff = 75% when L = 220µH (drum coil), VI1 = 1.5V, fCLK = 32kHz, IO = 6mA • Peff = 80% when L = 300µH (toroidal coil), VI1 = 1.5V, fCLK = 32kHz, IO = 7mA ■ SCI7631MBA • Peff = 70% when L = 220µH (leadless inductor), VI1 = 1.5V, fCLK = 32kHz, IO = 8mA • Peff = 75% when L = 220µH (drum coil), VI1 =1.5V, fCLK = 32kHz, IO = 9mA • Peff = 80% when L = 300µH (toroidal coil), VI1 = 1.5V, fCLK = 32kHz, IO = 10mA Inductor Use an inductor with low direct-current resistance and low losses. External components The performance characteristics of switching regulators depend greatly on the choice of external components. Observing the following guidelines will ensure high performance and maximum efficiency. Diode Use a Schottky barrier diode with a high switching speed and low forward voltage drop, VF. 4–16 Leadless Pre-wound, leadless inductors using surface-mount technology are the most suitable for portable equipment and other space-critical applications. Drum coil Avoid using drum coils because their magnetic field can induce noise. Toroidal coil Use a toroidal coil to virtually eliminate magnetic field leakage, reduce losses and improve performance. Capacitor To minimize ripple voltages, use a capacitor with a small equivalent direct-current resistance for smoothing. EPSON SCI7000 Series Technical Manual SCI7630 Series Sample External Components Leadless Inductors TDK NKF453232 series magnetically shielded leadless inductors Inductance (µH) NLF453232-390K 39.0 ±10% NLF453232-470K 47.0 ±10% NLF453232-560K 56.0 ±10% NLF453232-680K 68.0 ±10% NLF453232-820K 82.0 ±10% NLF453232-101K 100.0 ±10% NLF453232-121K 120.0 ±10% NLF453232-151K 150.0 ±10% NLF453232-181K 180.0 ±10% NLF453232-221K 220.0 ±10% NLF453232-271K 270.0 ±10% NLF453232-331K 330.0 ±10% NLF453232-391K 390.0 ±10% NLF453232-471K 470.0 ±10% NLF453232-561K 560.0 ±10% NLF453232-681K 680.0 ±10% NLF453232-821K 820.0 ±10% NLF453232-102K 1000.0 ±10% Qmin LQ frequency (MHz) 50 50 50 50 50 50 50 50 40 40 40 40 40 40 40 40 40 40 2.52 2.52 2.52 2.52 2.52 0.796 0.796 0.796 0.796 0.796 0.796 0.796 0.796 0.796 0.796 0.796 0.796 0.252 Characteristic response Device frequency (MHz-Min.) 13 12 11 10 10 9 8 7 6 5.5 5 4.5 4 3.8 3.6 3.4 3 2.5 DC resistance Rated current (Ω-Max.) (mA-Max.) 1.89 2.10 2.34 2.60 2.86 3.25 3.64 4.16 5.72 6.30 6.90 7.54 8.20 9.20 10.50 12.00 13.50 16.00 44 41 39 36 34 32 30 28 26 24 23 23 21 19 18 17 16 15 Switching Regulator Device Measurement circuit 1000 500 820 µH 20,000 µF A 390 µH Inductance (µH) 100 150 µH DC supply 50 5H Lx YHP4255A universal bridge 33 µH 10 10 µH 5 4.7 µH 1 1.0 µH 10 50 100 500 1000 DC current (mA) SCI7000 Series Technical Manual EPSON 4–17 SCI7630 Series Drum coil inductors Taiyo Yuuden FL series micro-inductors Device FL3H FL4H FL5H FL7H FL9H FL11H Inductance 0.22µH to 10µH 0.47µH to 12µH 10µH to 1mH 680µH to 8.2mH 330µH to 33mH 10mH to 150mH Direct current (mA) 280 to 670 300 to 680 50 to 320 50 to 170 50 to 500 35 to 110 Toroidal coil inductors Tohoku Metal Industries HP series toroidal coil inductors Device Rated current IDC (A) HP011 HP021 HP031 HP012 HP022 HP032 HP052 HP013 HP023 HP033 HP055 HP034S HP054S HP104S HP024 HP034 HP054 HP104 HP035 HP055 HP105 HP205 1 2 3 1 2 3 5 1 2 3 5 3 5 10 2 3 3 10 3 5 10 20 4–18 Inductance (µH) at 20kHz, 5V IDC = rating IDC = 0 200 160 65 55 30 23 600 450 180 135 120 80 45 30 1000 800 500 330 130 100 90 55 400 250 350 160 50 30 1500 950 300 230 210 140 45 30 700 500 600 330 180 95 20 14 EPSON Diameter × height (mm-Max.) φ 20 × 12 φ 22 × 13 φ 26 × 14 φ 36 × 18 φ 36 × 21 φ 43 × 23 Wire gauge (mm) 0.5 0.7 0.8 0.5 0.7 0.8 1.0 0.5 0.7 0.8 1.0 0.8 1.0 1.6 0.7 0.8 1.0 1.6 0.5 1.0 1.6 1.8 × 2 P SCI7000 Series Technical Manual SCI7630 Series Diodes Shindengen DINS4 Schottky barrier diodes Parameter Symbol Forward voltage VF Reverse current IR Junction-to-lead thermal resistance Junction-to-ambient thermal resistance θjl θja Condition IF = 1.1A, pulse measurement VR = VRM, pulse measurement Rating Min. Typ. Max. Unit — — 0.55 V — — 1 mA — — — — 23 157 ˚C/W ˚C/W Characteristics 5 Tp = 25 ˚C (typ) Tp = 125 ˚C (typ) Tp = 25 ˚C (max) 1 Tp =125 ˚C (max) Switching Regulator Forward current (A) 2 0.5 0.2 0.1 0.05 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 Forward voltage (V) Smoothing capacitors NEC MSV series capacitors Tan δ Package Rated Static capacitance Leakage +25, +85 +125 –55 type voltage (V) (µF) current (µA) ˚C ˚C ˚C MSVAOJ475M A 6.3 4.7 0.08 0.1 0.12 0.5 MSVB2OJ106M B2 6.3 10 0.08 0.1 0.12 0.6 MSVB2OJ156M B2 6.3 15 0.08 0.1 0.12 0.9 MSVBOJ156M B 6.3 15 0.08 0.1 0.12 0.9 MSVCOJ336M C 6.3 33 0.08 0.1 0.12 2.0 MSVD2OJ686M D2 6.3 68 0.08 0.1 0.12 4.2 MSVDOJ686M D 6.3 68 0.08 0.1 0.12 4.2 Note The figures on the previous pages show data from the documents of various manufactures. For further details, please contact the relevant manufacture. Device SCI7000 Series Technical Manual EPSON 4–19 SCI7630 Series Other Applications Voltage booster Combining an SCI7631 switching regulator with an SCI7661C/M DC/DC converter and voltage regulator L D + C1 10 µF VSW 1 14 2 13 3 12 4 SCI7661C/M 11 5 10 6 9 7 8 VO VI1 VI2 creates the voltage booster circuit shown in the following figure. + C2 10 µF SCI7631M GND ROSC 1 MΩ POFF C1 VO = – 15V PS PWCR VI = –5 V C3 10µF SCI7631M AA. The input voltage still reaches the SCI7661C/M through L and D. Potential levels are shown in the following figure. SCI7631M/CAA VI = 1.5 V SCI7661C/M PS VO (5 V) VDD (5 V) GND = 0 V VI (1.5 V) GND (0 V) Boost ON Boost OFF Boost ON Boost OFF VI = 5 V VDD (0 V) POFF GND = 0 V VO (–10 V) Although the circuit appears to have two ON/OFF control points, PS on the SCI7631CAA/MAA and POFF on the SCI7661C/M, PS only shuts down the 4–20 EPSON SCI7000 Series Technical Manual SCI7630 Series Output voltage adjustment To ensure stable output, any circuit that adjusts the output voltage must contain C1, RA and RB. To stop switching current from affecting VO, the circuit must also satisfy the condition IO < IR. Step-up voltage output RA VSW The following figure summarizes the relevant circuits inside an SCI7630 series chip. VO is connected to the level shift and buffer circuit, which provide the gate bias for the switching transistor driving the inductor. The current drain, IO1, varies with the load and is typically 10µA. The current, I O2 , through the internal resistors R1 and R2, is typically 1µA. VI VI VO IO IO1 IR VO IO2 CL SCI7631M Comparatpr GND C IO VSW RB Buffer (IO < IR) Level shifter R1 Controller VREF R2 Switching Regulator Voltage adjustment circuit SCI7633 Series CMOS Switching Regulators APPLICATIONS DESCRIPTION The SCI7633 series of CMOS switching regulators provide input voltage step-up and regulation to a specified voltage using an external coil. The devices in these series incorporate precision, low-power reference voltage generators and transistors for driving an internal comparator. They feature low power consumption, low operating voltages and standby operation. The devices offer a range of fixed output voltages, from 2.35 to 5.00V. They are available in 8-pin SOP3s. • Fixed-voltage power supplies for battery-operated equipment such as portable video cassette recorders, video cameras and radios • Power supplies for pages, memory cards, calculators and similar hand-held equipment • Fixed-voltage power supplies for medical equipment • Fixed-voltage power for communications equipment • Power supplies for microcomputers • Uninterruptable power supplies FEATURES • • • • • 0.9V (Min.) operating voltage 8µA (Typ.) maximum current consumption Standby operation 3µA (Typ.) standby current consumption Built-in oscillator circuit for use with external crystal oscillator • 8-pin SOP3 SCI7000 Series Technical Manual EPSON 4–21 SCI7630 Series LINE-UP Voltage (V) Device SCI7633MBA Output Multiplication Voltage Power-on Battery Response voltage frequency Output detection clear backup compensation temperature source characteristic Input 1.5 (0.9 min.) 3.00 Crystal oscillator No No No No SOP3-8pin PIN CONFIGURATIONS BLOCK DIAGRAMS SCI7633 series SCI7633 series PS CI CO CLO CO 1 8 PS CI 2 7 VI1 VSW GND 3 6 CLO VO VSW 4 5 VO VI1 Oscillator Reference voltage generator No Package + – SCI7633 series Control switch GND PIN DESCRIPTIONS SCI7633 series Number 1 2 3 4 5 6 7 8 Name CO CI GND VSW VO CLO VI PS Description Crystal drain Crystal gate Ground External inductor drive Output voltage Oscillator output Step-up input voltage Power save. See note. Note See standby mode in the functional description. 4–22 EPSON SCI7000 Series Technical Manual SCI7630 Series SPECIFICATIONS Absolute Maximum Ratings SCI7633 series Parameter Symbol VI1 IO VO Input voltage Output current Output voltage Power dissipation PD Operating temperature range Storage temperature range Solding temperature (for 10 s. See note.) Topr Tstg Tsol Rating 7 100 7 200 (SOP) 300 (DIP) –30 to 85 –65 to 150 260 Unit V mA V mW ˚C ˚C ˚C Note Temperatures during reflow soldering must remain within the limits set out in LSI Device Precautions. Never use solder dip to mount SCI7000 series power supply devices. Switching Regulator Electrical Characteristics SCI7633MBA VSS = 0V, Ta = 25 ˚C unless otherwise noted Parameter Input voltage Output voltage Symbol Conditions VI1 VO VO > VI2 VI1 = 1.5V VI1 = 1.5V, fCLK = 32kHz, IO = 1.0mA VI1 = 1.5V VI1 = 1.5V, VO = 3.0V, VSW = 0.2V VI1 = 1.5V, VO = 1.5V, VSW = 7.0V VI1 = 1.5V, VO = 3.0V, VOL = 0.2V VI1 = 1.5V, VO = 3.0V, VOH = 0.2V VIH = 1.5V CG = 10pF, CD = 10pF, RD = 300kΩ, fOSC = 32kHz Operating current IDDO Standby current IDDS Switching transistor ON resistance RSWON Switching transistor leakage current ISWQ CLO LOW-level output current IOL CLO HIGH-level output current IOH PS pull-up current Oscillator start-up voltage Oscillator shut-down voltage SCI7000 Series Technical Manual IIH VSTA VSTP EPSON Rating Min. Typ. Max. 0.9 — 2.0 2.90 3.00 3.10 Unit V V — 5 30 µA — 3 10 µA — 6 12 Ω — — 0.5 µA 0.5 1.0 — µA 0.55 1.1 — µA — 0.9 — 0.5 — 0.9 µA V V — — — 4–23 SCI7630 Series Typical Performance Characteristics Normalized frequency deviation vs. gate capacitance 1 2.0 50 Normalized frequency deviation = f–fO fO Ta = 25 ˚C Normalized frequency deviation (ppm) Fixed output voltage temperature characteristic (mV/˚C) Fixed output voltage temperature characteristic 1.5 1.0 0.5 0.0 0 1 2 3 4 5 0 CD = 10 pF –50 6 CD = 20 pF RD = 200 kΩ VI = 1.5 V fO = 32 kHz 0 10 Fixed output voltage (V) Standby current vs. ambient temperature 1.0 Normalized frequency deviation (ppm) VI1 = 1.5 V Standby current (µA) 4 3 2 1 0 –30 0 25 50 75 RD = 0 Ω VI = 1.5 V fO = 96 kHz 0 Normalized frequency deviation = ∆f/f –1.0 85 Normalized frequency deviation vs. input voltage 1 0.5 50 Normalized frequency deviation (ppm) RD = 200 kΩ VI = 1.5 V fO = 32 kHz 5 CG = CD = 10 pF CG = CD = 20 pF 0 –5 Normalized frequency deviation = ∆f/f –10 RD = 0 Ω VI = 1.5 V fO = 96 kHz 1.5 2.0 1.5 Input voltage (V) 2.0 2.5 2.5 Input voltage (V) EPSON Normalized frequency deviation = f–fO fO 0 CD = 10 pF CD = 20 pF –50 1.0 1.0 Normalized frequency deviation vs. gate capacitance 2 10 0.5 CG = CD = 20 pF CG = CD = 10 pF Ambient temperature (˚C) Normalized frequency deviation (ppm) 30 Normalized frequency deviation vs. input voltage 2 5 4–24 20 Gate capacitance (pF) 0 10 20 Gate capacitance (pF) 30 SCI7000 Series Technical Manual SCI7630 Series Load characteristics SCI7633MBA 4.0 10 100 Ta = 25 ˚C fCLK = 32 kHz fCLK = 32.8 kHz 3.5 3.0 2.5 VI1 = 1.5 V VI1 = 1.25 V 2.0 VI1 = 1.0 V 5 50 Load efficiency (%) Maximum load current (mA) Output voltage (V) Peff ILmax 1.5 0 5 10 15 20 0 25 100 Load current (mA) 200 300 500 0 1000 Inductance (µH) Notes Inductor: TDK NLF453232-221k (220µH) Diode: Shindengen DINS4 Schottky barrier diode Capacitor: NEC MSUB20J106M (10µF) Notes 1. VI1 = 1.5V 2. Inductor: TDK NLF453232 series Diode: Shindengen DINS4 Schottky barrier diode Capacitor: NEC MSUB20J106M (10µF) PACKAGE MARKINGS SCI7633 device packages use the following marking. 7631 Series number First subcode character Second subcode character Code number SCI7000 Series Technical Manual EPSON 4–25 Switching Regulator 1.0 SCI7630 Series FUNCTIONAL DESCRIPTION Basic Voltage Booster Operation TR1 switches ON and OFF at the frequency of the clock pulses from the crystal oscillator. When the transistor is ON, the circuit stores energy in L. When it is OFF, this energy flows through D to charge C. L VI1 D The output voltage regulator regulates the boosted output voltage. This voltage is determined by the level at point A between the two resistors connecting VO and GND. These series use an on-chip resistor to set the output at a specified voltage. VO Crystal Tr1 Reference voltage generator C GND CD CG Output voltage regulator VI1 GND VSW Internal Circuits Crystal oscillator VO Crystal oscillator The SCI7633 series incorporate a crystal oscillator circuit. An external crystal and drain resistor are used to generate the booster circuit clock. The crystal oscillator is connected to CI and CO as shown in the following figure. A + – GND CI SCI7633 Crystal Note In step-up voltage operation, the ripple voltage created by the switching operation is large relative to the output voltage described above. This ripple voltage is affected by external components and load conditions. The user is advised to check this voltage carefully. CO RD CG CD In the SCI7633 series, the crystal oscillator output is sent to CLO as the VO system signal. The crystal oscillator circuit is activated by VI but, because the output level is shifted and the output is connected to CLO, the oscillator output cannot be obtained without a voltage at VO. Since the crystal oscillator is activated when an input voltage is applied, oscillation continues even in standby mode. Reference voltage generator and output voltage regulator The reference voltage generator regulates VI1 to generate a voltage for the voltage regulator circuit. 4–26 Standby mode Connecting PS to GND places the chip in standby mode. In this mode, the crystal oscillator is disabled, switching off the inductor drive transistor and the voltage booster circuit. Typically, PS is connected to RST. If standby mode is not required, leave PS open as it has a pull-up resistor. Output voltage response compensation The SCI7634 series incorporates a response compensation input. A response compensation capacitor is connected between VCONT and VO, allowing the ripple voltage generated by the boosted output voltage to be suppressed to a minimum. EPSON SCI7000 Series Technical Manual SCI7630 Series Powering up Ensure that VO is at least the minimum operating voltage (0.9V) before switching on the booster circuit. One way to do this is to connect a capacitor between PS and GND so that the chip connects VO to VI when the power is applied for the first time. VI2 Battery PS C SCI7633M TYPICAL APPLICATIONS Example Circuits The output current, IO, and power conversion efficiency Peff, of a particular device in the series depends on fac- tors such as the switching frequency, type of coil, and the size and type of other external components. SCI7633 series L D VSW Switching Regulator VO VI SCI7633M GND C1 Crystal PS CLO CG CD Notes ■ 100µH ≤ L ≤ 1mH, C ≤ 10µF, D: Schottky diode ■ SCI7633MBA • Peff = 70% when L = 220µH (leadless inductor), VI1 = 1.5V, fCLK = 32kHz, IO = 8mA • Peff = 75% when L = 220µH (drum coil), VI1 = 1.5V, fCLK = 32kHz, IO = 9mA • Peff = 80% when L = 300µH (toroidal coil), VI1 = 1.5V, fCLK = 32kHz, IO = 10mA External Components The performance characteristics of switching regulators depend greatly on the choice of external components. Observing the following guidelines will ensure high performance and maximum efficiency. SCI7000 Series Technical Manual Inductor Use an inductor with low direct-current resistance and low losses. Leadless Pre-wound, leadless inductors using surface-mount technology are the most suitable for portable equipment and other space-critical applications. Drum coll Avoid drum coils because their magnetic field can induce noise. Toroidal coil Use a toroidal coil to virtually eliminate magnetic field leakage, reduce losses and improve performance. EPSON 4–27 SCI7630 Series Diode Use a Schottky barrier diode with a high switching speed and low forward voltage drop, VF. Capacitor To minimize ripple voltages, use capacitors with a small equivalent direct-current resistance for smoothing. Sample External Components Leadless inductors TDK NLF453232 series magnetically-shielded leadless inductors Device Inductance (µH) NLF453232-390K 39.0 ±10% NLF453232-470K 47.0 ±10% NLF453232-560K 56.0 ±10% NLF453232-680K 68.0 ±10% NLF453232-820K 82.0 ±10% NLF453232-101K 100.0 ±10% NLF453232-121K 120.0 ±10% NLF453232-151K 150.0 ±10% NLF453232-181K 180.0 ±10% NLF453232-221K 220.0 ±10% NLF453232-271K 270.0 ±10% NLF453232-331K 330.0 ±10% NLF453232-391K 390.0 ±10% NLF453232-471K 470.0 ±10% NLF453232-561K 560.0 ±10% NLF453232-681K 680.0 ±10% NLF453232-821K 820.0 ±10% NLF453232-102K 1000.0 ±10% Qmin LQ frequency (MHz) 50 50 50 50 50 50 50 50 40 40 40 40 40 40 40 40 40 40 2.52 2.52 2.52 2.52 2.52 0.796 0.796 0.796 0.796 0.796 0.796 0.796 0.796 0.796 0.796 0.796 0.796 0.252 Characteristic response Device freuquency (MHz-Min.) 13 12 11 10 10 9 8 7 6 5.5 5 4.5 4 3.8 3.6 3.4 3 2.5 A 820 µH 390 µH Inductance (µH) 100 1.89 2.10 2.34 2.60 2.86 3.25 3.64 4.16 5.72 6.30 6.90 7.54 8.20 9.20 10.50 12.00 13.50 16.00 Measurement circuit 1000 500 DC resistance Rated current (Ω-Max.) (mA-Max.) DC supply 150 µH 44 41 39 36 34 32 30 28 26 24 23 23 21 19 18 17 16 15 20,000 µF 5H Lx YHP4255A universal bridge 50 33 µH 10 5 1 10 µH 4.7 µH 1.0 µH 10 50 100 500 1000 DC current (mA) 4–28 EPSON SCI7000 Series Technical Manual SCI7630 Series Drum coil inductors Taiyo Yuuden FL series micro inductors Device FL3H FL4H FL5H FL7H FL9H FL11H Inductance 0.22µH to 10µH 0.47µH to 12µH 10µH to 1mH 680µH to 8.2mH 330µH to 33mH 10µH to 150mH Direct current (mA) 280 to 670 300 to 680 50 to 320 50 to 170 50 to 500 35 to 110 Toroidal coil inductors Tohoku Metal Industries HP series toroidal coil inductors Rated current IDC (A) HP011 HP021 HP031 HP012 HP022 HP032 HP052 HP013 HP023 HP033 HP055 HP034S HP054S HP104S HP024 HP034 HP054 HP104 HP035 HP055 HP105 HP205 1 2 3 1 2 3 5 1 2 3 5 3 5 10 2 3 5 10 3 5 10 20 SCI7000 Series Technical Manual Inductance (µH) at 20kHz, 5V IDC = 0 IDC = rating 200 160 65 55 30 23 600 450 180 135 120 80 45 30 1000 800 500 330 130 100 90 55 400 250 350 160 50 30 1500 950 300 230 210 140 45 30 700 500 600 330 180 95 20 14 EPSON Diameter × height (mm-Max.) 20 × 12 22 × 13 26 × 14 36 × 14 36 × 21 43 × 23 Wire gauge (mm) 0.5 0.7 0.8 0.5 0.7 0.8 1.0 0.5 0.7 0.8 1.0 0.8 1.0 1.6 0.7 0.8 1.0 1.6 0.8 1.0 1.6 1.8 × 2 P 4–29 Switching Regulator Device SCI7630 Series Diodes Shindengen DINS4 Schottky barrier diodes Parameter Symbol Forward voltage VF Reverse current IR Junction-to-lead thermal resistance Junction-to-ambient thermal resistance θjl θja Conditions IF = 1.1A, pulse measurement VR = VRM, pulse measurement Rating Min. Typ. Max. Unit — — 0.55 V — — 1 mA — — — — 23 157 ˚C/W ˚C/W Characteristics 5 Tp = 25 ˚C (typ) Tp = 125 ˚C (typ) Forward current (A) 2 Tp = 25 ˚C (max) 1 Tp = 125 ˚C (max) 0.5 0.2 0.1 0.05 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 Forward voltage (V) Smoothing capacitors NEC MSV series capacitors Tan δ Package Static capacitance Voltage (V) +25, +85 +125 type (µF) ˚C ˚C MSVA0J475M A 6.3 4.7 0.08 0.1 MSVB20J106M B2 6.3 10 0.08 0.1 MSVB20J156M B2 6.3 15 0.08 0.1 MSVB0J156M B 6.3 15 0.08 0.1 MSVC0J336M C 6.3 33 0.08 0.1 MSVD20J686M D2 6.3 68 0.08 0.1 MSVD0J686M D 6.3 68 0.08 0.1 Device –55 ˚C 0.12 0.12 0.12 0.12 0.12 0.12 0.12 Leakage current (µA) 0.5 0.6 0.9 0.9 2.0 4.2 4.2 Note The figures on the previous pages show data from the documents of various manufacturers. For further details, please contact the relevant manufacturer. 4–30 EPSON SCI7000 Series Technical Manual SCI7630 Series Other Applications Voltage booster Combining an SCI7633MBA switching regulator with an SCI7661C/M DC/DC converter and voltage regulaL tor creates the voltage booster circuit shown in the following figure. D + C1 10 µF VSW 1 14 2 13 3 12 4 SCI7661C/M 11 5 10 6 9 7 8 VO VI1 + C2 10 µF SCI7633M GND ROSC 1 MΩ POFF C VO = –15 V CG RD VI = –5 V Potential levels are shown in the following figure. SCI7633MBA VO (5 V) C3 10 µF CD SCI7661C/M VDD (5 V) Although the circuit appears to have two ON/OFF control points, PS on the SCI7633MBA and POFF on the SCI7661C/M, PS only shuts down the SCI7633MBA. The input voltage still reaches the SCI7661C/M through L and D. VI (1.5 V) GND (0 V) VI = 1.5 V PS VDD (0 V) GND = 0 V Boost ON Boost OFF Boost ON Boost OFF VI = 5V POFF VO (–10 V) SCI7000 Series Technical Manual GND = 0 V EPSON 4–31 Switching Regulator PS SCI7630 Series Output voltage adjustment To ensure stable output, any circuit that adjusts the output voltage must contain C1, RA and RB. To stop switching current from affecting VO, the circuit must also satisfy the condition IO < IR. RA VSW VI Step-up voltage output VO The following figure summarizes the relevant circuits inside an SCI7000 series chip. VO is connected to the level shift and buffer circuit, which provide the gate bias for the switching transistor driving the inductor. The current drain IO1, varies with the load and is typically 10µA. The current, I O2 , through the internal resistors R1 and R2 is typically 1µA. IO VI IR IO1 SCI7631M/C VO IO2 R1 Comparator GND C IO VSW CL RB (IO < IR) Buffer Level shifter Controller VREF R2 Voltage adjustment circuit 4–32 EPSON SCI7000 Series Technical Manual r to tec ag e D e lt Vo 5. SCI7720Y Series FEATURES The SCI7720Y series products are non-adjusting voltage detectors being developed utilizing he base of the CMOS silicon gate process. This voltage detector consists of the reference voltage circuit, voltage comparator, hysteresis circuit and output circuit, all operating on smaller current. A voltage range to be detected is internally set on respective detectors. A wide variety of our standard products are grouped as shown below according to the output format employed for the voltage detector output pin. The SCI7720Y series employs N-channel open drain output approach. And the SCI7721Y series and SCI 7722Y series employ the CMOS output and P-channel output, respectively. The package used is the SOT89-3 pin plastic package. Our voltage detectors are used for determining battery life, and also for monitoring supply voltage fed to microcomputers and LSI systems. • Full lineups: 19 types are prepared for the detection range between 2.0V to 5.0V. For the detection range from 0.8V to 2.5V, 7 types are available (products designed for lower voltage detection). • Low operating current: Typ. 2.0 uA (VDD = 5.0V). • Low operating voltage: 0.8V at minimum (designed for lower voltage operation). • Absolute maximum rated voltage: 15V maximum. • Highly stable built-in reference voltage source: Typ. 1.0V/0.8V (designed for lower voltage operation). • Better temperature characteristics of output voltage: Typ. -100ppm/°C. Voltage Detector DESCRIPTION SCI7000 Series Technical Manual EPSON 5–1 SCI7720Y Series MODEL GROUPS Table 5-1 Product name Voltage detectable Min. Typ. Max. SCI7721YCA 2.10 2.15 2.20 SCI7721YPA 2.20 2.25 SCI7721YSA 2.30 SCI7721YEA Output format Output phase Less than VDET VDET or above CMOS Low level High level 2.30 CMOS Low level High level 2.35 2.40 CMOS Low level High level 2.50 2.55 2.60 CMOS Low level High level SCI7721YFA 2.60 2.65 2.70 CMOS Low level High level SCI7721YRA 2.73 2.80 2.87 CMOS Low level High level SCI7721YGA 2.93 3.00 3.07 CMOS Low level High level SCI7721YHA 3.13 3.20 3.27 CMOS Low level High level SCI7721Y3A 3.43 3.50 3.57 CMOS Low level High level SCI7721YTA 3.90 4.00 4.10 CMOS Low level High level SCI7721YMA 4.10 4.20 4.30 CMOS Low level High level SCI7721YJA 4.30 4.40 4.50 CMOS Low level High level SCI7721Y2A 4.50 4.60 4.70 CMOS Low level High level SCI7721YKA 4.70 4.80 4.90 CMOS Low level High level SCI7721YLA 4.90 5.00 5.10 CMOS Low level High level SCI7721YCB 2.10 2.15 2.20 CMOS High level Low level SCI7721YFB 2.60 2.65 2.70 CMOS High level Low level Table 5-2 Product name Voltage detectable Min. Typ. Max. SCI7720YTA 3.90 4.00 4.10 SCI7720YFA 2.60 2.65 SCI7720YCA 2.10 SCI7720YNA Output format Output phase Less than VDET VDET or above N ch Open Drain Low level Hi–Z 2.70 N ch Open Drain Low level Hi–Z 2.15 2.20 N ch Open Drain Low level Hi–Z 1.85 1.90 1.95 N ch Open Drain Low level Hi–Z SCI7720YBA 1.10 1.15 1.20 N ch Open Drain Low level Hi–Z SCI7720YYA 1.05 1.10 1.15 N ch Open Drain Low level Hi–Z SCI7720YAA 1.00 1.05 1.10 N ch Open Drain Low level Hi–Z SCI7720YVA 0.90 0.95 1.00 N ch Open Drain Low level Hi–Z SCI7722YDB 1.20 1.25 1.30 P ch Open Drain High level Hi–Z 5–2 EPSON SCI7000 Series Technical Manual SCI7720Y Series BLOCK DIAGRAM SCI7720Y A Type SCI7720Y B Type * * VDD (2pin) VDD (2pin) + T – T T + – T OUT (1pin) OUT (1pin) Vref Vref VSS (3pin) VSS (3pin) SCI7721Y A Type SCI7721Y B Type * * VDD (2pin) VDD (2pin) + T – T OUT (1pin) T T + – OUT (1pin) + OUT (1pin) Vref Vref SCI7722Y A Type Voltage Detector VSS (3pin) VSS (3pin) SCI7722Y B Type * * VDD (2pin) VDD (2pin) + T – T T OUT (1pin) – T VSS (3pin) VSS (3pin) Note: A different code can be employed for the ones preceded by voltage specification. SCI7000 Series Technical Manual Vref Vref EPSON * marking depending on their detecting 5–3 SCI7720Y Series PIN DESCRIPTION Pin function Pin No. Pin name Pin function 1 OUT Voltage detection output pin 2 VDD Input voltage pin (positive side) 3 VSS Input voltage pin (negative side) Pin assignment SOT89-3pin 1 2 3 DESCRIPTION OF FUNCTION The SCI7720Y series has the circuit configuration as shown in the figure below. For the detection, divided potential (VREG) across the resistors inserted across the power supply and the reference voltage (Vref) generated on the IC are entered to the voltage comparator. Since the voltage comparator is designed to detect a target voltage even when potential difference between VREG and Vref minute, hysteresis is added so that the comparator may not fail due to noise on the power supply and such. In the example shown in the figure below, detection voltage (VDET) for the input voltage drop and relief voltage (VREL) for the increased input voltage are set based the following formula. Detection voltage: VDET = R1+R2+R3 • Vref R2+R3 Relief voltage: R1+R2+R3 • Vref R3 VREL = VDD (2pin) R1 (VREG) + T R2 – T OUT (1pin) Vref R3 VSS (3pin) 5–4 EPSON SCI7000 Series Technical Manual SCI7720Y Series The following figures show the input and output characteristics of the SCI7720Y series. OUT OUT VHYS VDET: Detection voltage VREL: Relief voltage VDET: Detection voltage VREL: Relief voltage 0 VHYS VDET VREL Operating voltage lower limit VDD(V1) 0 VDD(V1) 0 0 VDET VREL Operating voltage lower limit Operating voltage upper limit [SCI772 Y A Type] Operating voltage upper limit SCI772 Y B Type ** ** Note: The above input/output characteristics assumes that the pull up resistor is connected to the output pin for the SCI7720Y series. For the SCI7722Y series, it assumes that the pull down resistor is connected between the OUT and VDD pins. Parameter Supply voltage range Symbol Rating Unit VDD – VSS 15 V Voltage Detector ABSOLUTE MAXIMUM RATINGS VDD + 0.3 to VSS – 0.3 (SCI7721) Output voltage 15 to VSS – 0.3 (SCI7720) VO V VDD + 0.3 to VDD – 15 (SCI7722) Output current IO 50 mA Allowable dissipation PD 200 mW Operating temperature Topr –30 to +85 °C Storage temperature Tstg –65 to +150 Soldering time Soldering temperature Tsol 260°C 10 seconds (at lead) SCI7000 Series Technical Manual EPSON — 5–5 SCI7720Y Series ELECTRIC CHARACTERISTICS SCI7721YCA (Ta = –30°C to +85°C is assumed except where otherwise specified.) Parameter Symbol Operating voltage VDD Detection voltage VDET Hysteresis width VHYS Operating current IDD Detection voltage temperature characteristics Condition (VSS = 0.0V) Min. Typ. Max. Unit 1.50 — 12.0 V Ta = 25°C 2.10 2.15 2.20 V VHYS = VREL – VDET 0.05 0.10 0.15 V — 2.00 5.00 µA VDD = 3.0V ∆VDET VDET –300 –100 +100 High level output current IOH VDD = 3.0V OUT = 2.7V — Low level output current IOL VDD = 2.0V OUT = 0.2V Detection voltage response time TPHL ppm/°C –1.00 –0.25 mA 0.20 1.00 — mA VDD = 3V→2V Ta = 25°C — 8 40 µS VDD = 3V→2V Ta = –30°C to 85°C — — 200 µS SCI7721YPA (Ta = –30°C to +85°C is assumed except where otherwise specified.) Parameter Symbol Condition (VSS = 0.0V) Min. Typ. Max. Unit 1.50 — 12.0 V Operating voltage VDD Detection voltage VDET Ta = 25°C 2.20 2.25 2.30 V Hysteresis width VHYS VHYS = VREL – VDET 0.05 0.10 0.15 V Operating current IDD — 2.00 5.00 µA Detection voltage temperature characteristics VDD = 3.0V ∆VDET VDET –300 –100 +100 High level output current IOH VDD = 3.0V OUT = 2.7V — Low level output current IOL VDD = 2.0V OUT = 0.2V Detection voltage response time 5–6 TPHL ppm/°C –1.00 –0.25 mA 0.20 1.00 — mA VDD = 3V→2V Ta = 25°C — 8 40 µS VDD = 3V→2V Ta = –30°C to 85°C — — 200 µS EPSON SCI7000 Series Technical Manual SCI7720Y Series SCI7721YSA (Ta = –30°C to +85°C is assumed except where otherwise specified.) Symbol Condition (VSS = 0.0V) Min. Typ. Max. Unit 1.50 — 12.0 V Operating voltage VDD Detection voltage VDET Ta = 25°C 2.30 2.35 2.40 V Hysteresis width VHYS VHYS = VREL – VDET 0.05 0.10 0.15 V Operating current IDD — 2.00 5.00 µA Detection voltage temperature characteristics VDD = 3.0V ∆VDET VDET –300 –100 +100 High level output current IOH VDD = 3.0V OUT = 2.7V — Low level output current IOL VDD = 2.0V OUT = 0.2V Detection voltage response time TPHL ppm/°C –1.00 –0.25 mA 0.20 1.00 — mA VDD = 3V→2V Ta = 25°C — 8 40 µS VDD = 3V→2V Ta = –30°C to 85°C — — 200 µS SCI7721YEA (Ta = –30°C to +85°C is assumed except where otherwise specified.) Parameter Symbol Condition (VSS = 0.0V) Min. Typ. Max. Unit 1.50 — 12.0 V Operating voltage VDD Detection voltage VDET Ta = 25°C 2.50 2.55 2.60 V Hysteresis width VHYS VHYS = VREL – VDET 0.05 0.10 0.15 V Operating current IDD — 2.00 5.00 µA Detection voltage temperature characteristics VDD = 3.0V ∆VDET VDET –300 –100 +100 High level output current IOH VDD = 3.0V OUT = 2.7V — Low level output current IOL VDD = 2.0V OUT = 0.2V Detection voltage response time SCI7000 Series Technical Manual TPHL ppm/°C –1.00 –0.25 mA 0.20 1.00 — mA VDD = 3V→2V Ta = 25°C — 8 40 µS VDD = 3V→2V Ta = –30°C to 85°C — — 200 µS EPSON 5–7 Voltage Detector Parameter SCI7720Y Series SCI7721YFA (Ta = –30°C to +85°C is assumed except where otherwise specified.) Parameter Symbol Condition (VSS = 0.0V) Min. Typ. Max. Unit 1.50 — 12.0 V Operating voltage VDD Detection voltage VDET Ta = 25°C 2.60 2.65 2.70 V Hysteresis width VHYS VHYS = VREL – VDET 0.05 0.10 0.15 V Operating current IDD — 2.00 5.00 µA Detection voltage temperature characteristics VDD = 3.0V ∆VDET VDET –300 –100 +100 High level output current IOH VDD = 3.0V OUT = 2.7V — Low level output current IOL VDD = 2.0V OUT = 0.2V Detection voltage response time TPHL ppm/°C –1.00 –0.25 mA 0.20 1.00 — mA VDD = 3V→2V Ta = 25°C — 8 40 µS VDD = 3V→2V Ta = –30°C to 85°C — — 200 µS SCI7721YRA (Ta = –30°C to +85°C is assumed except where otherwise specified.) Parameter Symbol Condition (VSS = 0.0V) Min. Typ. Max. Unit 1.50 — 12.0 V Operating voltage VDD Detection voltage VDET Ta = 25°C 2.73 2.80 2.87 V Hysteresis width VHYS VHYS = VREL – VDET 0.05 0.10 0.15 V Operating current IDD — 2.00 5.00 µA Detection voltage temperature characteristics VDD = 3.0V ∆VDET VDET –300 –100 +100 High level output current IOH VDD = 3.0V OUT = 2.7V — Low level output current IOL VDD = 2.0V OUT = 0.2V Detection voltage response time 5–8 TPHL ppm/°C –1.00 –0.25 mA 0.20 1.00 — mA VDD = 3V→2V Ta = 25°C — 8 40 µS VDD = 3V→2V Ta = –30°C to 85°C — — 200 µS EPSON SCI7000 Series Technical Manual SCI7720Y Series SCI7721YGA (Ta = –30°C to +85°C is assumed except where otherwise specified.) Symbol Condition (VSS = 0.0V) Min. Typ. Max. Unit 1.50 — 12.0 V Operating voltage VDD Detection voltage VDET Ta = 25°C 2.93 3.00 3.07 V Hysteresis width VHYS VHYS = VREL – VDET 0.09 0.15 0.21 V Operating current IDD — 2.00 5.00 µA Detection voltage temperature characteristics VDD = 4.0V ∆VDET VDET –300 –100 +100 High level output current IOH VDD = 4.0V OUT = 3.6V — Low level output current IOL VDD = 2.0V OUT = 0.2V Detection voltage response time TPHL ppm/°C –1.60 –0.40 mA 0.20 1.00 — mA VDD = 4V→3V Ta = 25°C — 8 40 µS VDD = 4V→3V Ta = –30°C to 85°C — — 200 µS SCI7721YHA (Ta = –30°C to +85°C is assumed except where otherwise specified.) Parameter Symbol Condition (VSS = 0.0V) Min. Typ. Max. Unit 1.50 — 12.0 V Operating voltage VDD Detection voltage VDET Ta = 25°C 3.13 3.20 3.27 V Hysteresis width VHYS VHYS = VREL – VDET 0.09 0.15 0.21 V Operating current IDD — 2.00 5.00 µA Detection voltage temperature characteristics VDD = 4.0V ∆VDET VDET –300 –100 +100 High level output current IOH VDD = 4.0V OUT = 3.6V — Low level output current IOL VDD = 2.0V OUT = 0.2V Detection voltage response time SCI7000 Series Technical Manual TPHL ppm/°C –1.60 –0.40 mA 0.20 1.00 — mA VDD = 4V→3V Ta = 25°C — 8 40 µS VDD = 4V→3V Ta = –30°C to 85°C — — 200 µS EPSON 5–9 Voltage Detector Parameter SCI7720Y Series SCI7721Y3A (Ta = –30°C to +85°C is assumed except where otherwise specified.) Parameter Symbol Condition (VSS = 0.0V) Min. Typ. Max. Unit 1.50 — 12.0 V Operating voltage VDD Detection voltage VDET Ta = 25°C 3.43 3.50 3.57 V Hysteresis width VHYS VHYS = VREL – VDET 0.09 0.15 0.21 V Operating current IDD — 2.00 5.00 µA Detection voltage temperature characteristics VDD = 4.0V ∆VDET VDET –300 –100 +100 High level output current IOH VDD = 4.0V OUT = 3.6V — Low level output current IOL VDD = 2.0V OUT = 0.2V Detection voltage response time TPHL ppm/°C –1.60 –0.40 mA 0.20 1.00 — mA VDD = 4V→3V Ta = 25°C — 8 40 µS VDD = 4V→3V Ta = –30°C to 85°C — — 200 µS SCI7721YTA (Ta = –30°C to +85°C is assumed except where otherwise specified.) Parameter Symbol Condition (VSS = 0.0V) Min. Typ. Max. Unit 1.50 — 12.0 V Operating voltage VDD Detection voltage VDET Ta = 25°C 3.90 4.00 4.10 V Hysteresis width VHYS VHYS = VREL – VDET 0.13 0.20 0.27 V Operating current IDD — 2.00 5.00 µA Detection voltage temperature characteristics VDD = 5.0V ∆VDET VDET –300 –100 +100 High level output current IOH VDD = 5.0V OUT = 4.5V — Low level output current IOL VDD = 2.0V OUT = 0.2V Detection voltage response time 5–10 TPHL ppm/°C –2.00 –0.50 mA 0.20 1.00 — mA VDD = 5V→4V Ta = 25°C — 8 40 µS VDD = 5V→4V Ta = –30°C to 85°C — — 200 µS EPSON SCI7000 Series Technical Manual SCI7720Y Series SCI7721YMA (Ta = –30°C to +85°C is assumed except where otherwise specified.) Symbol Condition (VSS = 0.0V) Min. Typ. Max. Unit 1.50 — 12.0 V Operating voltage VDD Detection voltage VDET Ta = 25°C 4.10 4.20 4.30 V Hysteresis width VHYS VHYS = VREL – VDET 0.13 0.20 0.27 V Operating current IDD — 2.00 5.00 µA Detection voltage temperature characteristics VDD = 5.0V ∆VDET VDET –300 –100 +100 High level output current IOH VDD = 5.0V OUT = 4.5V — Low level output current IOL VDD = 2.0V OUT = 0.2V Detection voltage response time TPHL ppm/°C –2.00 –0.50 mA 0.20 1.00 — mA VDD = 5V→4V Ta = 25°C — 8 40 µS VDD = 5V→4V Ta = –30°C to 85°C — — 200 µS SCI7721YJA (Ta = –30°C to +85°C is assumed except where otherwise specified.) Parameter Symbol Condition (VSS = 0.0V) Min. Typ. Max. Unit 1.50 — 12.0 V Operating voltage VDD Detection voltage VDET Ta = 25°C 4.30 4.40 4.50 V Hysteresis width VHYS VHYS = VREL – VDET 0.13 0.20 0.27 V Operating current IDD — 2.00 5.00 µA Detection voltage temperature characteristics VDD = 5.0V ∆VDET VDET –300 –100 +100 High level output current IOH VDD = 5.0V OUT = 4.5V — Low level output current IOL VDD = 2.0V OUT = 0.2V Detection voltage response time SCI7000 Series Technical Manual TPHL ppm/°C –2.00 –0.50 mA 0.20 1.00 — mA VDD = 5V→4V Ta = 25°C — 8 40 µS VDD = 5V→4V Ta = –30°C to 85°C — — 200 µS EPSON 5–11 Voltage Detector Parameter SCI7720Y Series SCI7721Y2A (Ta = –30°C to +85°C is assumed except where otherwise specified.) Parameter Symbol Condition (VSS = 0.0V) Min. Typ. Max. Unit 1.50 — 12.0 V Operating voltage VDD Detection voltage VDET Ta = 25°C 4.50 4.60 4.70 V Hysteresis width VHYS VHYS = VREL – VDET 0.08 0.15 0.22 V Operating current IDD — 2.00 5.00 µA Detection voltage temperature characteristics VDD = 5.0V ∆VDET VDET –300 –100 +100 High level output current IOH VDD = 5.0V OUT = 4.5V — Low level output current IOL VDD = 2.0V OUT = 0.2V Detection voltage response time TPHL ppm/°C –2.00 –0.50 mA 0.20 1.00 — mA VDD = 5V→4V Ta = 25°C — 8 40 µS VDD = 5V→4V Ta = –30°C to 85°C — — 200 µS SCI7721YKA (Ta = –30°C to +85°C is assumed except where otherwise specified.) Parameter Symbol Condition (VSS = 0.0V) Min. Typ. Max. Unit 1.50 — 12.0 V Operating voltage VDD Detection voltage VDET Ta = 25°C 4.70 4.80 4.90 V Hysteresis width VHYS VHYS = VREL – VDET 0.13 0.20 0.27 V Operating current IDD — 2.00 5.00 µA Detection voltage temperature characteristics VDD = 5.0V ∆VDET VDET –300 –100 +100 High level output current IOH VDD = 5.0V OUT = 4.5V — Low level output current IOL VDD = 2.0V OUT = 0.2V Detection voltage response time 5–12 TPHL ppm/°C –2.00 –0.50 mA 0.20 1.00 — mA VDD = 5V→4V Ta = 25°C — 8 40 µS VDD = 5V→4V Ta = –30°C to 85°C — — 200 µS EPSON SCI7000 Series Technical Manual SCI7720Y Series SCI7721YLA (Ta = –30°C to +85°C is assumed except where otherwise specified.) Symbol Condition (VSS = 0.0V) Min. Typ. Max. Unit 1.50 — 12.0 V Operating voltage VDD Detection voltage VDET Ta = 25°C 4.90 5.00 5.10 V Hysteresis width VHYS VHYS = VREL – VDET 0.13 0.20 0.27 V Operating current IDD — 2.00 5.00 µA Detection voltage temperature characteristics VDD = 6.0V ∆VDET VDET –300 –100 +100 High level output current IOH VDD = 6.0V OUT = 5.4V — Low level output current IOL VDD = 2.0V OUT = 0.2V Detection voltage response time TPHL ppm/°C –2.40 –0.60 mA 0.20 1.00 — mA VDD = 6V→4V Ta = 25°C — 8 40 µS VDD = 6V→4V Ta = –30°C to 85°C — — 200 µS SCI7721YCB (Ta = –30°C to +85°C is assumed except where otherwise specified.) Parameter Symbol Condition (VSS = 0.0V) Min. Typ. Max. Unit 1.50 — 12.0 V Operating voltage VDD Detection voltage VDET Ta = 25°C 2.10 2.15 2.20 V Hysteresis width VHYS VHYS = VREL – VDET 0.05 0.10 0.15 V Operating current IDD — 2.00 5.00 µA Detection voltage temperature characteristics VDD = 3.0V ∆VDET VDET –300 –100 +100 High level output current IOH VDD = 2.0V OUT = 1.8V — Low level output current IOL VDD = 3.0V OUT = 0.3V Detection voltage response time SCI7000 Series Technical Manual TPHL ppm/°C –0.40 –0.10 mA 0.50 2.00 — mA VDD = 3V→2V Ta = 25°C — 8 40 µS VDD = 3V→2V Ta = –30°C to 85°C — — 200 µS EPSON 5–13 Voltage Detector Parameter SCI7720Y Series SCI7721YFB (Ta = –30°C to +85°C is assumed except where otherwise specified.) Parameter Symbol Condition (VSS = 0.0V) Min. Typ. Max. Unit 1.50 — 12.0 V Operating voltage VDD Detection voltage VDET Ta = 25°C 2.60 2.65 2.70 V Hysteresis width VHYS VHYS = VREL – VDET 0.05 0.10 0.15 V Operating current IDD — 2.00 5.00 µA Detection voltage temperature characteristics VDD = 3.0V ∆VDET VDET –300 –100 +100 High level output current IOH VDD = 2.0V OUT = 1.8V — Low level output current IOL VDD = 3.0V OUT = 0.3V Detection voltage response time TPHL ppm/°C –0.40 –0.10 mA 0.50 2.00 — mA VDD = 3V→2V Ta = 25°C — 8 40 µS VDD = 3V→2V Ta = –30°C to 85°C — — 200 µS SCI7720YTA (Ta = –30°C to +85°C is assumed except where otherwise specified.) Parameter Symbol Condition (VSS = 0.0V) Min. Typ. Max. Unit 1.50 — 12.0 V Operating voltage VDD Detection voltage VDET Ta = 25°C 3.90 4.00 4.10 V Hysteresis width VHYS VHYS = VREL – VDET 0.13 0.20 0.27 V Operating current IDD — 2.00 5.00 µA Detection voltage temperature characteristics Low level output current Detection voltage response time 5–14 VDD = 5.0V ∆VDET VDET IOL TPHL –300 –100 +100 VDD = 2.0V OUT = 0.2V ppm/°C 0.20 1.00 — mA VDD = 5V→4V Ta = 25°C — 8 40 µS VDD = 5V→4V Ta = –30°C to 85°C — — 200 µS EPSON SCI7000 Series Technical Manual SCI7720Y Series SCI7720YFA (Ta = –30°C to +85°C is assumed except where otherwise specified.) Parameter Symbol Condition (VSS = 0.0V) Min. Typ. Max. Unit 1.50 — 12.0 V Operating voltage VDD Detection voltage VDET Ta = 25°C 2.60 2.65 2.70 V Hysteresis width VHYS VHYS = VREL – VDET 0.05 0.10 0.15 V Operating current IDD — 2.00 5.00 µA Detection voltage temperature characteristics Low level output current Detection voltage response time VDD = 3.0V ∆VDET VDET IOL TPHL –300 –100 +100 VDD = 2.0V OUT = 0.2V ppm/°C 0.20 1.00 — mA VDD = 3V→2V Ta = 25°C — 8 40 µS VDD = 3V→2V Ta = –30°C to 85°C — — 200 µS SCI7720YCA Parameter Symbol Condition (VSS = 0.0V) Min. Typ. Max. Unit 0.80 — 10.0 V Operating voltage VDD Detection voltage VDET Ta = 25°C 2.10 2.15 2.20 V Hysteresis width VHYS VHYS = VREL – VDET 0.05 0.10 0.15 V Operating current IDD — 2.00 5.00 µA Detection voltage temperature characteristics Low level output current Detection voltage response time SCI7000 Series Technical Manual VDD = 3.0V ∆VDET VDET IOL TPHL –300 –100 +100 ppm/°C VDD = 1.5V OUT = 0.15V 0.15 0.75 — mA VDD = 3V→2V Ta = 25°C — 8 40 µS VDD = 3V→2V Ta = –30°C to 85°C — — 200 µS EPSON 5–15 Voltage Detector (Ta = –30°C to +85°C is assumed except where otherwise specified.) SCI7720Y Series SCI7720YNA (Ta = –30°C to +85°C is assumed except where otherwise specified.) Parameter Symbol Condition (VSS = 0.0V) Min. Typ. Max. Unit 0.80 — 10.0 V Operating voltage VDD Detection voltage VDET Ta = 25°C 1.85 1.90 1.95 V Hysteresis width VHYS VHYS = VREL – VDET 0.03 0.05 0.08 V Operating current IDD — 2.00 5.00 µA Detection voltage temperature characteristics Low level output current Detection voltage response time VDD = 3.0V ∆VDET VDET IOL TPHL –300 –100 +100 ppm/°C VDD = 1.5V OUT = 0.15V 0.15 0.75 — mA VDD = 2V→1V Ta = 25°C — 8 40 µS VDD = 2V→1V Ta = –30°C to 85°C — — 200 µS SCI7720YBA (Ta = –30°C to +85°C is assumed except where otherwise specified.) Parameter Symbol Condition (VSS = 0.0V) Min. Typ. Max. Unit 0.80 — 10.0 V Operating voltage VDD Detection voltage VDET Ta = 25°C 1.10 1.15 1.20 V Hysteresis width VHYS VHYS = VREL – VDET 0.03 0.05 0.08 V Operating current IDD — 1.50 4.00 µA Detection voltage temperature characteristics Low level output current Detection voltage response time 5–16 VDD = 1.5V ∆VDET VDET IOL TPHL –300 –100 +100 VDD = 0.8V OUT = 0.16V ppm/°C 0.05 0.40 — mA VDD = 1.5V→0.8V Ta = 25°C — 8 40 µS VDD = 1.5V→0.8V Ta = –30°C to 85°C — — 200 µS EPSON SCI7000 Series Technical Manual SCI7720Y Series SCI7720YYA (Ta = –30°C to +85°C is assumed except where otherwise specified.) Parameter Symbol Condition (VSS = 0.0V) Min. Typ. Max. Unit 0.80 — 10.0 V Operating voltage VDD Detection voltage VDET Ta = 25°C 1.05 1.10 1.15 V Hysteresis width VHYS VHYS = VREL – VDET 0.03 0.05 0.08 V Operating current IDD — 1.50 4.00 µA Detection voltage temperature characteristics Low level output current Detection voltage response time VDD = 1.5V ∆VDET VDET IOL TPHL –300 –100 +100 VDD = 0.8V OUT = 0.16V ppm/°C 0.05 0.40 — mA VDD = 1.5V→0.8V Ta = 25°C — 8 40 µS VDD = 1.5V→0.8V Ta = –30°C to 85°C — — 200 µS SCI7720YAA Parameter Symbol Condition (VSS = 0.0V) Min. Typ. Max. Unit 0.80 — 10.0 V Operating voltage VDD Detection voltage VDET Ta = 25°C 1.00 1.05 1.10 V Hysteresis width VHYS VHYS = VREL – VDET 0.03 0.05 0.08 V Operating current IDD — 1.50 4.00 µA Detection voltage temperature characteristics Low level output current Detection voltage response time SCI7000 Series Technical Manual VDD = 1.5V ∆VDET VDET IOL TPHL –300 –100 +100 VDD = 0.8V OUT = 0.16V ppm/°C 0.05 0.40 — mA VDD = 1.5V→0.8V Ta = 25°C — 8 40 µS VDD = 1.5V→0.8V Ta = –30°C to 85°C — — 200 µS EPSON 5–17 Voltage Detector (Ta = –30°C to +85°C is assumed except where otherwise specified.) SCI7720Y Series SCI7720YVA (Ta = –30°C to +85°C is assumed except where otherwise specified.) Parameter Symbol Condition (VSS = 0.0V) Min. Typ. Max. Unit 0.80 — 10.0 V Operating voltage VDD Detection voltage VDET Ta = 25°C 0.90 0.95 1.00 V Hysteresis width VHYS VHYS = VREL – VDET 0.03 0.05 0.08 V Operating current IDD — 1.50 4.00 µA Detection voltage temperature characteristics Low level output current Detection voltage response time VDD = 1.5V ∆VDET VDET IOL TPHL –300 –100 +100 VDD = 0.8V OUT = 0.16V ppm/°C 0.05 0.40 — mA VDD = 1.5V→0.8V Ta = 25°C — 8 40 µS VDD = 1.5V→0.8V Ta = –30°C to 85°C — — 200 µS SCI7722YDB (Ta = –30°C to +85°C is assumed except where otherwise specified.) Parameter Symbol Condition (VSS = 0.0V) Min. Typ. Max. Unit 0.80 — 10.0 V Operating voltage VDD Detection voltage VDET Ta = 25°C 1.20 1.25 1.30 V Hysteresis width VHYS VHYS = VREL – VDET 0.03 0.05 0.08 V Operating current IDD — 1.50 4.00 µA Detection voltage temperature characteristics Low level output current Detection voltage response time 5–18 VDD = 1.5V ∆VDET VDET IOL TPHL –300 –100 +100 ppm/°C VDD = 0.8V OUT = 0.64V — VDD = 1.5V→0.8V Ta = 25°C — 8 40 µS VDD = 1.5V→0.8V Ta = –30°C to 85°C — — 200 µS EPSON –0.08 –0.01 mA SCI7000 Series Technical Manual SCI7720Y Series EXAMPLES OF EXTERNAL CONNECTION Input voltage (+) (2pin) YDD (1pin) SC17721Y OUT SERIES Voltage detection output YSS (3pin) Input voltage (–) Power supply for pull up resistor Input voltage (+) (2pin) YDD SC17721Y OUT SERIES (1pin) Voltage detection output YSS (3pin) Input voltage (–) Voltage Detector Input voltage (+) (2pin) YDD (1pin) SC17721Y OUT SERIES Voltage detection output YSS (3pin) Input voltage (–) Power supply for pull down resistor SCI7000 Series Technical Manual EPSON 5–19 SCI7720Y Series SAMPLE CIRCUITS (SCI7721Y SERIES) CR timer circuit When the SCI7721Y circuit configured as shown in Figure 5-14, it can be used as a CR timer circuit. VDD R VDD SCI7721Y VO OUT C VSS Figure 5-14 CR timer circuit Battery backup circuit The following is an example of the supply voltage switching circuit for the battery backup supply configured featuring the SCI7721Y series. PNP transistor VDD VCC VBAT VDD SCI7721Y VO NPN transistor VSS Enable signal Figure 5-15 Battery backup circuit 5–20 EPSON SCI7000 Series Technical Manual SCI7720Y Series SAMPLE CIRCUITS (SCI7720Y SERIES) CR timer circuit When the SCI77210 circuit is configured as shown in Figure 5-16, it can be used as a CR timer circuit. VDD VDD R VDD SCI7720Y OUT VO C VSS Figure 5-16 CR timer circuit Battery backup circuit The following is an example of the supply voltage switching circuit for the battery backup configured featuring the SCI7720Y series. PNP transistor VCC Voltage Detector VDD VBAT VDD SCI7720Y VO NPN transistor VSS Enable signal Figure 5-17 Battery backup circuit SCI7000 Series Technical Manual EPSON 5–21 SCI7720Y Series PRECAUTIONS Short cut current on the SCI 7721 (CMOS output voltage detector) Since the SCI772Y series employs CMOS output, as an input voltage nears the detection voltage range, short cut current is flown between VDD and VSS. The short cut current is voltage sensitive, and approximately 2 mA flows at 5V level or so (our products are not check for short cut current after volume production has been started). Although duration of the short cut current depends on operating conditions (such as type the circuit used and supply impedance), normally it is assumed to continue several usec to several dozens of usec. If a load with high impedance is inserted across the power supply, oscillation can be introduced by the short cut current. In order to reject this trouble, the following measures should be considered: (1) Reduce the resistance value. (2) Insert a capacitor. (3) Replace with the SCI7720Y series (it employs N-channel open drain approach). SCI 7721Y 5–22 EPSON SCI7000 Series Technical Manual ix p d en Ap 6. Appendix ORDERING INFORMATION SEIKO EPSON IC products are ordered by part number. Example S CI 2064 C 15 SEIKO EPSON CORPORATION identifer Device type CI Power supply Part number Package code C F M Y Plastic DIP Plastic QFP Plastic SOP SOT89 Subcode Appendix • Semicustom customer code • Version or revision number • Specification modification SCI7000 Series Technical Manual EPSON 6–1 Appendix CMOS LSI LINEUP Product Type Device Series Product Type Device Series ASICs (application-specific ICs) Gate arrays SLA Telecom ICs STC/SVM Standard cells SSC Melody ICs SVM ASMICs (application-specific microcomputer ICs) 4-bit microcomputers E0C Peripherals E0C Graphic ICs SPC Timepiece ICs SRM LCD controllers SED Static RAMs SRM LCD drivers SED Mask ROMS SMM EEPROMs SPM ASSPs (application-specific standard products) Disk storage management ICs Font processor ICs 6–2 ASSPs (application-specific standard products) Memories SED/SPC/E0C Power supply ICs SCI Analog switch ICs SED SPC EPSON SCI7000 Series Technical Manual Appendix ABSOLUTE MAXIMUM RATINGS POWER DISSIPATION CONDITIONS Absolute maximum ratings are the maximum physical and electrical ratings of a device beyond which performance degradation or damage will occur. Always check circuit conditions before using a device to avoid exceeding these ratings. Typically, absolute maximum ratings include the following parameters. To prevent damage always consider the following points when designing with power regulation ICs. 1. A precise thermal design is necessary to ensure adequate heat dissipation. Steady state applied voltages, noise, reverse voltage transients and power-on-transients can degrade or damage the integrated circuit if they exceed the maximum power supply voltage rating. 2. Input signal voltage Input signals exceeding this rate can damage input protection circuits 3. Output current Generally, specifications are not set for CMOS devices with small output currents. Devices that provide large drive currents will have output current specifications. 3 25 x 80 x 0.7 mm3 ceramic substrate 12.5 x 40 x 0.7 mm3 ceramic substrate Power dissipation (W) 1. Power supply voltage The following figure shows the power dissipation capacity in relation to ambient temperature. 2 12.5 x 20 x 0.7 mm3 ceramic substrate or 1.7 mm thick glass-epoxy substrate with 1 cm2 collector surface area 1 0.5 mm thick substrate 0 50 100 Ambient temperature (˚C) 4. Power dissipation The maximum power dissipation of a device is limited by its construction and package type. Maximum output current limits are set to prevent thermal damage. 150 The following figure shows the cost and reliability of a product and is significant when designing a system. 5. Operating temperature range The temperature range for normal device operation with no change in performance characteristics. Reliability Appendix Cost The temperature range for device storage with no degradation or damage. This specification is particularly important when ICs are being transported by air. Reliability Cost 6. Storage temperature range 7. Soldering temperature and the duration The maximum soldering temperature and the time for which the leads can be at this temperature. RECOMMENDED OPERATING CONDITIONS Junction temperature Recommended operating conditions are the conditions under which a device functions correctly. These include power supply voltage, input conditions and output current. These conditions are sometimes listed as part of the electrical characteristics. ELECTRICAL CHARACTERISTICS Electrical characteristics specify the DC and AC characteristics of a device under the worst measurement conditions. SCI7000 Series Technical Manual EPSON 6–3 Appendix The following figure shows a thermal design model which can be used to determine heatsink capacity. Junction temperature Tj θjc Case temperature Tc Heat source 2. Ensure that the regulator common pin is a single-point ground to prevent earth loops. Make ground lines as thick and short as possible. Use the specified bypass capacitors for inputs and outputs. If there is a switching load, use a tantalum or ceramic capacitor, as these devices have a high frequency response between the power supply and ground. θcs Heatsink temperature Ts θsa Ambient temperature Ta PARAMETER SUMMARY Symbol 6–4 Parameter CD Drain capacitance CF8 Field slew capacitance CG CI Symbol Iopr2 Parameter Stabilization circuit power dissipation IQ Quiescent current Gate capacitance IR Reverse current Input capacitance ISWQ Switching transistor leakage current Cn Capacitance KI Output voltage temperature gradient CT Crosstalk PD Power dissipation Peff Voltage multiplication efficiency CTn Temperature gradient fCLK Clock frequency fmax Maximum clock frequency RL Load resistance fOSC Oscillator frequency RO Output impedance RBSON Backup switch ON resistance FT Field through (channel OFF) RON ON resistance IBSQ Backup switching leakage current ROSC Oscillator network resistor IDDO Operating current RRV Stabilization voltage sensing resistor IDDS Standby current RRVn Reference voltage IDD Power supply current RSAT Stabilization output saturation resistance IIH HIGH-level input current RSWON IIL LOW-level input current Ta Ambient temperature Switching transistor ON resistance ILK1 input leakage current tAE Minimum pulsewidth IMAX Maximum current tHA Address hold time IO Output current IOH HIGH-level output current THD IOL LOW-level output current θjn Iopr1 Multiplier circuit power dissipation tHD tMRR EPSON Data hold time Total harmonic distortion Thermal resistance Memory reset recovery time SCI7000 Series Technical Manual Appendix Symbol Parameter Symbol Parameter tMR Memory reset VI Input voltage Topr Operating temperature VIH HIGH-level input voltage tPAE Propagation delay VIL LOW-level input voltage tPHL LOW-level transition time VI Input voltage tPLH HIGH-level transition time VO Output voltage tPLS Propagation delay Voff Input offset voltage tPOP Propagation delay Vop+ Input voltage range tPS Propagation delay VOPMAX Maximum output voltage VOPMIN Minimum output voltage tSA Address setup time tSD Data setup time VREF Reference voltage VREG Output voltage (regulated) Soldering temperature and time Storage temperature VSS Power supply voltage VDD Power supply voltage VSSn Power supply voltage VDET Detection voltage VSTA Oscillator start-up voltage VF Forward voltage VSTP Oscillator shut-down voltage Appendix Tsol Tstg SCI7000 Series Technical Manual EPSON 6–5 Appendix DIMENSIONS Plastic DIP–8pin Plastic DIP–14pin 9.7Max 19.7Max 9.1±0.1 19.0±0.1 5 14 6.3±0.1 INDEX 1 8 6.4±0.1 8 4 1 7.62 7 0.8±0.1 3.0Min 4.4±0.1 0.8±0.1 4.4±0.1 3.0Min +0.03 0.25 –0.01 2.54 +0.03 0.25–0.01 2.54 0.46±0.1 ±0.25 7.62 1.5 1.3 0.46±0.1 ±0.25 7.62 to 9.02 7.62 to 9.02 Unit: mm Plastic QFP5–48pin Unit: mm Plastic QFP12-48pin 19.6±0.4 9.0±0.4 7.0±0.1 14±0.1 36 24 7.0±0.1 37 20±0.1 INDEX 25 0.8 INDEX 9.0±0.4 48 0.35±0.1 1 13 48 24 25 1 12 0.18±0.1 1.7max 2.7±0.1 0.5 0.15±0.05 0.125±0.05 0.5±0.2 1.5 ±0.3 2.8 Unit: mm Plastic SOP3–8pin 1.0 Plastic SOP4–8pin 5.0±0.2 INDEX 4 1.27 Unit: mm 6–6 EPSON 0.35±0.1 1.75 1.6 0.8 0.15 0.15 0.4±0.1 4 1.65 1.5±0.15 1 0.2±0.1 1.27 5 6.8±0.4 6.0±0.4 3.9±0.2 5 INDEX 1 8 5.0±0.2 5.0±0.2 8 Unit: mm 0.15±0.1 0.55 Unit: mm SCI7000 Series Technical Manual Appendix Plastic SOP5–14pin SOT 89–3pin 4.5±0.1 1.8Max 10.5Max 0.44Max 1 1 7 2 3 1.5 1.5 Min 0.8 8.0±0.3 INDEX 2.5±0.1 4.25Max 8 5.5±0.2 14 0.4 10.2±0.2 0.44Max 0.4±0.1 1.5±0.1 2.3 0.15±0.1 0.4 0.48Max 0.48Max 0.53Max Unit: mm Plastic SOP2-24pin Plastic SOP2–28pin 15.5Max 18.1Max 15.2±0.1 14 8.4±0.1 1.0 0.4±0.1 1.27 Plastic SSOP2–16pin Plastic SSOP1–20pin 6.5±0.1 20 1 1.2Max 1.7Max 0° 10° 0.05 1.5 10 0.15 0.5±0.2 0.65 0.22±0.1 0.15 0° 10° 0.5±0.2 1 0.9 Unit: mm SCI7000 Series Technical Manual 6.4±0.3 INDEX 8 0.36±0.1 11 0.1 1.05 INDEX 6.2±0.3 4.4±0.2 9 4.4±0.1 6.6±0.2 0.8 1.0 Unit: mm 6.8±0.2 1 0.15±0.05 Appendix 0.15±0.05 Unit: mm 16 11.8±0.3 1 2.5±0.15 0.2 2.5±0.15 0.4±0.1 15 2.7 12 8.4±0.1 1 17.8±0.1 28 11.8±0.3 13 2.7 24 1.27 Unit: mm 0.2 1.27±0.1 0.1±0.08 2.2Max 6.8 EPSON Unit: mm 6–7 Appendix EMBOSS CARRIER TAPING STANDARD (3-PIN SOT89) TAPING INFORMATION The emboss carrier taping standard is shown in the following table and figure. This standard conforms to the EIAJ RCI00B electronic parts taping specification. Each tape holds 1,000 devices. Dimension code Dimensions/angles (mm/°) Dimension code Dimensions/angles (mm/°) A 5.0 P2 2.0 ±0.05 B 4.6 T 0.3 D 1.5 +0.1, –0.05 T2 2.3 E 1.50 ±0.1 W 12.0 ±0.2 F 5.65 ±0.05 W1 9.5 P1 8.0 ±0.1 θ 30°max P0 4.0 ±0.1 Note The tape thickness is 0.1 mm max. T D Feeder hole Cross section with device position E A F W B Device cavity θ θ Travel direction T2 P1 There are no joints in either the cover or carrier tapes. Less than 0.2% of the total device count is comprised of non-sequential blanks. There are no sequential 6–8 P2 P0 blanks. This does not apply to the tape leader and trailer. EPSON SCI7000 Series Technical Manual Appendix REEL SPECIFICATIONS The reel specifications are shown in the following table and figure. The reel is made of paperboard. Dimension code Dimensions (mm) A 178 ±2.0 B 80 ±1.0 C 13.0 ±0.5 D 21.0 ±1.0 E 2.0 ±0.5 W 14.0 (See note.) W1 1.5 ±0.1 W2 17 (See note.) r 1.0 W2 120˚ 120˚ C E B A D r W W1 Note W and W2 are measured at the reel core. DEVICE POSITIONING Appendix Small molded power IC devices are positioned as shown in the following figure. T1 SCI7000 Series Technical Manual T2 EPSON 6–9 Appendix EMBOSS CARRIER TAPING STANDARD (8-PIN SOP3) TAPING INFORMATION The emboss carrier taping standard is shown in the following table and figure. This standard conforms to the EIAJ RCI009B electronic parts taping specification. Each tape holds 2,000 devices. Dimension code Dimensions/angles (mm/°) Dimension code A 6.7 P2 2.0 ±0.05 B 5.4 T 0.3 ±0.05 D 1.55 +0.05, –0 T2 2.5 D1 1.55 ±0.05 W 12.0 ±0.3 E 1.75 ±0.1 W1 9.5 θ 15°max F 5.5 ±0.1 P1 8.0 ±0.1 P0 4.0 ±0.1 Dimensions/angles (mm/°) Note The tape thickness is 0.1 mm max. P0 T D P1 E A F W W1 B θ θ T2 P1 Index mark D1 TE2 Travel direction There are no joints in either the cover or carrier tapes. Less than 0.2% of the total device count is comprised of non-sequential blanks. There are no sequential 6–10 blanks. This does not apply to the tape leader and trailer. EPSON SCI7000 Series Technical Manual Appendix REEL SPECIFICATIONS W2 The reel specifications are shown in the following table and figure. The reel is made of paperboard. Dimension code Dimensions (mm) A 330 ±2.0 B 80 ±1.0 C 13.0 ±0.5 D 21.0 ±0.5 E 2.0 ±0.5 W 15.4 ±1.0 (See note.) W1 2.0 ±0.5 W2 23.4 (See note.) r 1.0 120˚ 120˚ C E B A D r W W1 Note W and W2 are measured at the reel core. DEVICE POSITIONING Appendix Type B products are positioned so that the index mark is on the sprocket hole side of the tape, as shown in the following figure. Travel direction Index mark SCI7000 Series Technical Manual EPSON 6–11 Appendix Type F product are positioned so that the index mark is on the opposite side to the sprocket holes, as shown in the following figure. Travel direction Index mark 6–12 EPSON SCI7000 Series Technical Manual Appendix EMBOSS CARRIER TAPING STANDARD (14-PIN SOP5) TAPING INFORMATION The emboss carrier taping standard is shown in the following table and figure. This standard conforms to Dimension code the EIAJ RCI009B electronic parts taping specification. Each tape holds 2,000 devices. Dimensions (mm/°) Dimension code A 8.4 P2 2.0 ±0.1 B 10.6 T 0.3 ±0.05 D0 1.55 ±0.05 T2 3.0 D1 1.55 ±0.05 W 16.0 ±0.3 E 1.75 ±0.1 W1 13.5 F 7.5 ±0.1 P1 12 ±0.1 P0 4.0 ±0.1 Dimensions (mm/°) Note The tape thickness is 0.1 mm max. P0 DIA D0 P2 T E F A W B W1 DIA D1 Appendix P1 T2 There are no joints in either the cover or carrier tapes. Less than 0.1% of the total device count is comprised of non-sequential blanks. There are no sequential SCI7000 Series Technical Manual blanks. This does not apply to the tape leader and trailer. EPSON 6–13 Appendix REEL SPECIFICATIONS The reel specifications are shown in the following table and figure. The reel is made of paperboard. Dimension code Dimensions (mm) A 330 ±2.0 B 80 ±1.0 C 13.0 ±0.5 D 21.0 ±1.0 E 2.0 ±0.5 W 14.0 ±1.5 (See note.) W1 2.0 ±0.5 W2 20.5 max (See note.) r 1.0 W2 120˚ 120˚ C E B A r D W W1 Note W and W2 are measured at the reel core. DEVICE POSITIONING Type B products are positioned so that the index mark is on the sprocket hole side of the tape, as shown in the following figure. Index mark 6–14 Travel direction EPSON SCI7000 Series Technical Manual Appendix Type F products are positioned so that the index mark is on the opposite side to the sprocket holes, as shown in the following figure. Travel direction Appendix Index mark SCI7000 Series Technical Manual EPSON 6–15 Appendix EMBOSS CARRIER TAPING STANDARD (24-PIN SOP2) TAPING INFORMATION The emboss carrier taping standard is shown in the following table and figure. This standard conforms to the EIAJ RCI009B electronic parts taping specification. Each tape holds 1,000 devices. Dimension code Dimensions (mm) A 12.4 P0 4.0 ±0.1 B 15.6 P2 2.0 ±0.1 D0 1.55 +0.1, –0 T 0.3 ±0.05 D1 2.0 +0.1, –0 T2 3.0 ±0.1 E 1.75 ±0.1 W 24 ±0.2 F 11.5 ±0.1 W1 21.5 typ P1 16 ±0.1 Dimension code Dimensions (mm) Note The tape thickness is 0.1 mm max. DIA D0 P0 P2 T E F A W W1 B DIA D1 P1 T2 There are no joints in either the cover or carrier tapes. Less than 0.2% of the total device count is comprised of non-sequential blanks. There are no sequential blanks. This does not apply to the tape leader and 6–16 trailer. The tape tension should be approximately 10 N (1 kgf). A label indicates the part name, quantity and lot number. EPSON SCI7000 Series Technical Manual Appendix Tape configuration The tape configuration is shown in the following figure. Blank sections are provided as a leader and trailer, with 1,000 SOP2 packages fitted into the component mounting section between them. At the begin- ning of the leader section there is an extra section of tape which contains the cover tape only. Finish Trailer (open) > 40mm Base Lead (open) > 40mm Start Cover tape only Travel direction SCI7000 Series Technical Manual EPSON Appendix Embossed carrier 6–17 Appendix REEL SPECIFICATIONS The reel specifications are shown in the following table and figure. The reel is made of conductive PVC. Dimension code Dimensions (mm) A 330 ±2.0 B 80 ±1.0 C 13.0 ±0.5 D 21.0 ±1.0 E 2.0 ±0.5 W2 120˚ 120˚ C E B A r D W 24.4 +2, –0 (See note.) W1 2.0 ±0.5 W2 31.4 max (See note.) r 1.0 W W1 Note W and W2 are measured at the reel core. DEVICE POSITIONING Type B products are positioned so that the index mark is on the sprocket hole side of the tape, as shown in the following figure. Index mark 6–18 EPSON Travel direction SCI7000 Series Technical Manual Appendix Type F products are positioned so that the index mark is on the opposite side to the sprocket holes, as shown in the following figure. Travel direction Appendix Index mark SCI7000 Series Technical Manual EPSON 6–19 International Sales Operations AMERICA ASIA EPSON ELECTRONICS AMERICA, INC. HEADQUARTERS - CHINA EPSON (CHINA) CO., LTD. 1960 E. Grand Avenue El Segundo, CA 90245, U.S.A. Phone : +1-310-955-5300 Fax : +1-310-955-5400 28F, Beijing Silver Tower 2# North RD DongSanHuan ChaoYang District, Beijing, CHINA Phone : 64106655 Fax : 64107320 SALES OFFICES West SHANGHAI BRANCH 150 River Oaks Parkway San Jose, CA 95134, U.S.A. Phone : +1-408-922-0200 Fax : +1-408-922-0238 4F, Bldg., 27, No. 69, Gui Jing Road Caohejing, Shanghai, CHINA Phone : 21-6485-5552 Fax : 21-6485-0775 - HONG KONG, CHINAEPSON HONG KONG LTD. Central 101 Virginia Street, Suite 290 Crystal Lake, IL 60014, U.S.A. Phone : +1-815-455-7630 Fax : +1-815-455-7633 20/F., Harbour Centre, 25 Harbour Road Wanchai, HONG KONG Phone : +852-2585-4600 Fax : +852-2827-4346 Telex : 65542 EPSCO HX Northeast 301 Edgewater Place, Suite 120 Wakefield, MA 01880, U.S.A. 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No. 1 Temasek Avenue, #36-00 Millenia Tower, SINGAPORE 039192 Phone : +65-337-7911 Fax : +65-334-2716 - KOREA SEIKO EPSON CORPORATION KOREA OFFICE 50F, KLI 63 Bldg., 60 Yoido-Dong Youngdeungpo-Ku, Seoul, 150-010, KOREA Phone : 02-784-6027 Fax : 02-767-3677 - JAPAN SEIKO EPSON CORPORATION ELECTRONIC DEVICES MARKETING DIVISION Electronic Device Marketing Department IC Marketing & Engineering Group 421-8, Hino, Hino-shi, Tokyo 191-8501, JAPAN Phone: +81-(0)42-587-5816 Fax: +81-(0)42-587-5624 ED International Marketing Department I (Europe & U.S.A.) 421-8, Hino, Hino-shi, Tokyo 191-8501, JAPAN Phone: +81-(0)42-587-5812 Fax: +81-(0)42-587-5564 ED International Marketing Department II (Asia) 421-8, Hino, Hino-shi, Tokyo 191-8501, JAPAN Phone: +81-(0)42-587-5814 Fax: +81-(0)42-587-5110 In pursuit of “Saving” Technology, Epson electronic devices. Our lineup of semiconductors, liquid crystal displays and quartz devices assists in creating the products of our customers’ dreams. Epson IS energy savings. SCI 7000 Series ELECTRONIC DEVICES MARKETING DIVISION ■ Electronic Devices Information on the EPSON WWW Server http://www.epson.co.jp/device/ First issue November 1989 Printed January, 2000 in Japan H B