User Guide

36
S-101
BD9781HFP (IC810: 1U-3695)
BD9002HFP (IC811: 1U-3695)
BD4828G (IC203: 1U-3694) LM3671 (IC912: 1U-3694)
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BD9781HVFP
5
3
4
1
2
7
6
5~35V
V IN
INV
Vre f
OSC
FB
RT
CURRENT LIMIT
ERROR AMP
PWM
SW
EN/SYNC
RESET
COMPARATOR
SOFT
START
24KΩ
10KΩ
150KΩ
390KΩ
4700μF
220μF
33μH
330μF
1μF
0.1μF
LATCH
Vref SYNC
ON/OFF
L:OFF
H:ON
TSD
V IN
GND
VO
DRIVER
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BD9002HVFP
5
7
4
1
2
3
V IN
INV
Vre f
OSC
FB
SS
RT
CURRENT LIMIT
ERROR AMP
PWM
SW
RESET
COMPARATOR
LATCH
Vre f
UVLO
TSD
V IN
GND
DRIVER
6
1
V
OUT
N.C .
2
V
DD
3
GND
5
4
N.C .
1V IN SW
2
GND
3
EN
5
4FB