BD9270F データシートの表示（PDF） - ROHM Semiconductor
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BD9270F Datasheet PDF : 5 Pages
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〇Package Dimensions
Device Mark
BD9270F
Lot No.
SOP-24 (Unit:mm)
〇Block Diagram
3/4
〇Pin Description
PIN No. PIN NAME
FUNCTION
1
PGND Ground for FET drivers
2
LN2
NMOS FET driver
3
HFN2
NMOS FET driver (New Function)
4
CT_SYNC_IN CT synchronous signal input pin
5 CT_SYNC_OUT CT synchronous signal output pin
6
REF4V Internal regulator output
7
SRT
External resistor from SRT to RT for adjusting the
start-up triangle oscillator
8
RT
External resistor from RT to GND for adjusting the
triangle oscillator
9
GND
GROUND
10
DUTY
Control PWM mode and BURST mode
11
FAIL
Error mode OUTPUT Pin (open drain)
12
STB
Stand-by switch
13
CP
External capacitor from CP to GND for Timer Latch
14
VREF
Reference voltage input pin for Error amplifier
15
VS
Error amplifier input
16
IS
Error amplifier input
17
FB
Error amplifier output
18
SS
External capacitor from SS to GND for Soft Start
Control
19
STRK
Striking time setting pin
20
COMPSD Over voltage detect pin with Shutdown
21
COMP Over voltage detect pin with timer latch
22
VCC
Supply voltage input
23
HFN1
NMOS FET driver (New Function)
24
LN1
NMOS FET driver
REV. B
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