Download Drive 4056 Specifications

LTC4056-4.2
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 5V.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
∆VRECHRG
Recharge Threshold Voltage
VFLOAT – VRECHRG, VBAT > VTRIKL,
Charge Termination Timer Expired
100
150
200
mV
TTIMER
TIMER/SHDN Accuracy
CTIMER = 1µF RPROG = 1.43k
●
10
12
%
●
0.6
0.82
1
V
Charger Manual Control
VMSDT
Manual Shutdown Threshold Voltage
VTIMER/SHDN Increasing
VMSHYS
Manual Shutdown Hysteresis Voltage
VTIMER/SHDN Decreasing
50
75
125
mV
ISHDN
TIMER/SHDN Pin Pull-up Current
VTIMER/SHDN = 0V
– 10
–7
–4
µA
IDSHRT
Drive Output Short-Circuit Current Limit
VDRIVE = VCC
30
65
130
mA
IPSHRT
PROG Pin Short-Circuit Current Limit
VPROG = 0V
ICHRG
CHRG Pin Weak Pull-Down Current
VCHRG = 1V, VTIMER/SHDN = 0V
VCHRG
CHRG Output Low Voltage
ICHRG = 10mA
Protection
●
1.4
mA
Status Output
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC4056E is guaranteed to meet performance specifications
from 0°C to 70°C ambient temperature range. Specifications over the
– 40°C to 85°C operating ambient temperature range are assured by
design, characterization and correlation with statistical process controls.
Note 3: Although the LTC4056 will operate with input voltages as low as
4.5V, charging will not begin until VCC exceeds VUVCL.
6
●
12
18
µA
0.2
0.4
V
Note 4: Assumes that the external PNP pass transistor has negligible B-C
reverse-leakage current when the collector is biased at 4.2V (VBAT) and the
base is biased at 5V (VCC).
Note 5: Assumes that the external PNP pass transistor has negligible B-E
reverse-leakage current when the emitter is biased at 0V (VCC) and the
base is biased at 4.2V (VBAT).
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Float Voltage vs Temperature and
Supply Voltage
4.202
IBAT = 10mA
PNP = FZT749
FLOAT VOLTAGE (V)
4.210
VFLOAT (V)
4.205
4.200
4.195
VCC = 4.75V
220
VCC = 5V
TA = 25°C
PNP = FZT749
4.201 RPROG = 1.30k
VCC = 6.5V
RPROG = 4.53k
215 PNP = FZT749
210
IBAT (mA)
4.215
IBAT vs Temperature and
Supply Voltage
Float Voltage vs IBAT
4.200
VCC = 6.5V
200
VCC = 4.75V
195
4.199
190
4.190
4.185
–50 –25
205
185
4.198
50
25
75
0
TEMPERATURE (°C)
100
125
4056-4.2 G01
0
100
200
300 400
IBAT (mA)
500
600
700
4056-4.2 G02
180
– 50 – 25
75
50
25
TEMPERATURE (°C)
0
100
125
4056-4.2 G03
405642f
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