BD9305AFVM Datasheet, PDF (6/15 Pages) Rohm – Single-output Step-up,High-efficiency Switching Regulator(Controller Type)

BD9306AFVM, BD9305AFVM
Block Diagram / Application Circuit
Technical Note
FB
8
Err
1.25V
10000ｐF
5.1ｋΩ
COMP
7
GND
6
Vcc
5
Soft
Start
Timer
Latch
Shut Down
Vref
UVLO
TSD
Shut Down
OSC
PWM
DRV
VCC
VCC
10uF
0.5Ω
(When Output Short,
Protect Fall VCC)
47uH
20uF 30ｋΩ
ENABLE
1
RT
20kΩ
2
CT
200pF
3
ENB
10kΩ
4
GD
VCC
Fig.20 Block Diagram / Application Circuit (BD9305AFVM)
10ｋΩ
Vo
1ｋΩ
470pF
FB
8
Err
1.25V
10000pF
3.9kΩ
COMP
7
GND
6
Vcc
5
Soft
Start
Timer
Latch
Shut Down
Vref
UVLO
TSD
Shut Down
OSC
PWM
DRV
1
RT
20Ω
2
CT
200pF
ENABLE
3
ENB
10kΩ
VCC
4
GD
10uF
47uH
20uF
200kΩ
15kΩ
Vo
1kΩ
100pF
Fig.21 Block Diagram / Application Circuit (BD9306AFVM)
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6/14
2009.05 - Rev.A