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– MAIN Board –
IC403 PST8429UL
GND 1
VREF
+
–
VDD 2
IC602 TPS2553DBVR
IN 1
CHARGE
GND 2
PUMP
EN 3
UNDERVOLTAGE
LOCKOUT
IC706 TK73400AU3G0L-C
VCONT
1
ON/OFF
CONTROL
VIN
2
GND
3
VOUT
4
THERMAL &
–
OVER CURRENT
FB
5
+
PROTECTION
4
OUT
3
CD
RREVERSE VOLTAGE
–
COMPARATOR
+
CURRENT
SENSE
4-ms
DEGLITCH
CURRENT
DRIVER
LIMIT
8-ms
DEGLITCH
THERMAL
SENSE
IC801 74LVC157A-PW
VREF
GND 8
6 OUT
5 ILLM
4 FAULT
S 1
1/0 2
MULTIPLEXER
SELECTOR
1/1 3
OUTPUT S
1Y 4
2/0 5
MULTIPLEXER
SELECTOR
OUTPUT S
2/1 6
2Y 7
HCD-G2BNiP/G2NiP
IC704 BD00GA3WEFJ-E2
IC705 BD00GC0WEFJ-SE2
8
7
6
5
OCP
SOFT
TSD
1
2
3
4
MULTIPLEXER
SELECTOR
OUTPUT S
MULTIPLEXER
SELECTOR
OUTPUT S
16
VCC
15
E
14
4/0
13
4/1
12
4Y
11
3/0
10
3/1
9
3Y
53
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