15
Reference
Voltage
5
1
2
VIN
VSS
VOUT
ON/OFF
CIRCUIT
4
ON/OFF
Parasitic DIODE
IC981 S-818A33AUC-BGN-T2G
IC805 SN74AHCT244PWR
IC980 LF33AB-DT-TR
1
2
3
4
8
7
6
5
1A
GND
3Y
2A
VCC
1Y
3A
2Y
IC804 SN74AHC2G34HDCTR
16
14
18
12
1Y1
1Y2
1Y3
1Y4
9
3
7
2Y3
2Y2
2Y1
2Y4
5
8
13
2
4
1
6
19
1OE
1A1
1A2
1A3
2A1
2OE
1A4
2A2
11
15
2A4
2A3
17
1
INHIBIT
CONTROL
V
IN
3 V
OUT
2
GND
REFERENCE
VOLTAGE
TERM.
PROTECTION
DRIVER
CURRENT
LIMIT
DUMP
PROTECTION
START
INHIBIT
ERROR
AMPLIFIER
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