79
S-301
BD9781HFP (IC810: 1U-3695)
BD9002HFP (IC811: 1U-3695)
1
2
3
4
5
6
7
BD9781HVFP
5
3
4
1
2
7
6
5~35V
V
IN
INV
Vref
OSC
FB
RT
CURRENT LIMIT
ERROR AMP
PWM
SW
EN/SYNC
RESET
COMPARATOR
SOFT
START
24K
Ω
10K
Ω
150K
Ω
390K
Ω
4700
μF
220
μ
F
33
μ
H
330
μ
F
1
μ
F
0.1
μ
F
LATCH
Vref
SYNC
ON/OFF
L:OFF
H:ON
TSD
V
IN
GND
VO
DRIVER
1
2
3
4
5
6
7
BD9002HVFP
5
7
4
1
2
3
V
IN
INV
Vref
OSC
FB
SS
RT
CURRENT LIMIT
ERROR AMP
PWM
SW
RESET
COMPARATOR
LATCH
Vref
UVLO
TSD
V
IN
GND
DRIVER
6
2
3
5
4
GND
D
OE
V
CC
Q
logic diagram (positive logic)
OE
6
1
3
4
LE
D
C
D
Q
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QQ 376315150
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TEL 13942296513
9
9
2
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4
2
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0
5
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Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299