Download 2. abbreviation

Document:
System Description
Version
Issue date:
1.0
5.
Page
26.05.2012
5 of 14
MAIN CONTROLLER CARD
See:
Appendix 5; MCC Wiring Diagram
Appendix 2; MCC Overview
5.1. Power Supply Unit
Linear Voltage Regulator 5V (LM 78L05)
5.1.1.
Schematic drawing:
Description
We have changed this regulator from a switching regulator since the estimated
current consumption of the board is a lot less than expected. We have estimated
that the board will draw approximately 150mA, which will produce 1.35watts of
heat, we consider using the ground plane as a heat sink.
Function
Deliver a steady power supply to the logic circuits as well as the LEDs used. (5V
±0.2V).
Input
Output
I/O specification
13.8V ±4V
5V ± 0.2V
GND
N/A
Vin & Imax
7.9Vmin – 35Vmax & load currents up to 1000mA
MTBF
1002356520 hours
Footprint
TO-92
Price
1 USD
References
7.1.1.4 LM 78L05 data sheet
Author / date
O.R
Figure 2: Connectors On MCC
20.03.2012