BD9305AFVM Datasheet, PDF (5/15 Pages) Rohm – Single-output Step-up,High-efficiency Switching Regulator(Controller Type)

BD9306AFVM, BD9305AFVM
Block Diagram
FB
8
Err
1.25V
Technical Note
COMP
7
GND
6
Vcc
5
Soft
Start
Timer
Latch
Shut Down
Vref
UVLO
TSD
Shut Down
OSC
PWM
DRV
VCC
1
RT
FB
8
Err
1.25V
ENABLE
2
CT
COMP
7
3
ENB
GND
6
4
GD
Vcc
5
Soft
Start
Timer
Latch
Shut Down
Vref
UVLO
TSD
Shut Down
OSC
PWM
DRV
ENABLE
1
2
RT
CT
3
ENB
4
GD
Fig19. Pin Assignment Diagram & Block Diagram (Above:BD9305AFVM / Below:BD9306AFVM)
Pin Assignment and Pin Function
Pin No
Pin Name
1
RT
2
CT
3
ENB
4
GD
5
Vcc
6
GND
7
COMP
8
FB
Function
Timing Resistance connection Pin
Timing Capacity connection Pin
Control Pin
Gate Drive Output Pin
Power Supply Pin
Ground pin
Error amp output Pin
Error amp inversion input Pin
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5/14
2009.05 - Rev.A