BD9853AFV Datasheet, PDF (5/17 Pages) Rohm – Single/Dual-output High-frequency Step-down Switching Regulato (Controller type)

BD9853AFV
●Block Diagram
VCC
VCC
FB1
VOUT1
INV1
SCP/SOFT1
FB2
VOUT2
INV2
SCP/SOFT2
RT
Technical Note
both channel
ON/OFF
5V
REGA
VCC-5V
REGB
REGA
REGB
STB
VCC
SOFT1
0.8V
(Push-Pull)
TSD
VREF
VCC
VCC
⊿ ｔ ^REGA
REGB
OUT1H ^Pch
OUT1L ^Nch
GND
VOUT1
SOFT2
0.8V
(Push-Pull)
OSC
Timer
Latch
0.56V
VCC
⊿ ｔ _REGA
REGB
GND
VCC
OUT2H ^Pch
Nch
OUT2L
GND
VOUT2
Fig. 9
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© 2009 ROHM Co., Ltd. All rights reserved.
5/16
2009.05 - Rev.A