BD9896FV Datasheet, PDF (3/5 Pages) Rohm – Silicon Monolithic Integrated Circuit

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〇Package Dimensions
Device Mark
BD9896FV
１
Lot No.
SSOP-B28 (Unit:mm)
〇Block Diagram
VCC REG
CT_SYNC_IN CT_SYNC_OUT RT
BRT BCT
DUTY
STB
SS
FB1
IS1
VS1
FB2
IS2
VS2
VREF
GND
REG
Block
STB
Block
OSC
SYSTEM　ON/OFF
Master/Slave
CT
BOSC
DUTY
Block
UVLO
VCC
Block
F/B
Block ①
F/B
Block ②
SS
PWM
Block ①
CT
SS
PWM
Block ②
CT
LOGIC
Block
①
LOGIC
Block
VCC
OUTPUT
Block ①
VCC
OUTPUT
Block ②
PROTECT
Block
UVLO
NA1
NB1
NA2
NB2
PGND
FAIL
COMP CP SRT
〇Pin Description
端子番号
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
端子名
NA1
NB1
CP
REG
FAIL
VREF
CT_SYNC_OUT
CT_SYNC_IN
RT
SRT
GND
BCT
BRT
DUTY
STB
VS2
IS2
FB2
VS1
IS1
FB1
SS
COMP
VCC
UVLO
NB2
NA2
PGND
機能
FET driver for 1ch
FET driver for 1ch
External capacitor from CP to GND for
Timer Latch
Internal regulator output
Protect clock output
Reference voltage
Output pin of CT synchronous signal
Input pin of CT synchronous signal
External resistor from SRT to RT for
adjusting the triangle oscillator
External resistor from SRT to RT for
adjusting the triangle oscillator
GROUND
External capacitor from BCT to GND for
adjusting the BURST triangle oscillator
External resistor from BRT to GND for
adjusting the BURST triangle oscillator
Control PWM mode and BURST mode
Stand-by switch, Master/Slave selection
Error amplifier input④
Error amplifier input③
Error amplifier output②
Error amplifier input②
Error amplifier input①
Error amplifier output①
External capacitor from SS to GND for
Soft Start Control
Over voltage detector
Supply voltage input
External Under Voltage Lock OUT
FET driver for 2ch
FET driver for 2ch
Ground for FET drivers
REV. C