MEX-DV150UE/DV1500U/DV1505U
36
IC401 BD9778HFP
1
VIN
2
SW
6
RT
4
GND
5
INV
7
EN
3
FB
DRIVER
CURRENT
LIMIT
ERROR
AMP
SOFT
START
PWM
COMPARATOR
THERMAL
SHUT DOWN
LATCH
OSC
VREF
IC402 TPS2051BDRG4
1
2
GND
OC
IN
CHARGE
PUMP
3
IN
4
EN
DRIVER
CURRENT
LIMIT
THERMAL
SENCE
UVLO
CS
8
7
5
6
OUT
OUT
OUT
IC431 S-1170B33UC-OTSTFG
VOUT
VIN
5
ON/OFF
4
1
VSS 2
NC 3
+
–
OVERCURRENT
PROTECTION
THERMAL
SHUTDOWN
REFERENCE
VOLTAGE
ON/OFF
CONTROL