BD9215AFV Datasheet, PDF (3/5 Pages) Rohm – Silicon Monolithic Integrated Circuit

〇Package Dimensions
Device Mark
(Include BURR : MAX 10.35)
BD9215AFV
１
Lot No.
SSOP-B28 (Unit:mm)
〇Block Diagram
3/4
〇Pin Description
PIN No.
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
PIN NAME
FUNCTION
PGND
Ground for FET drivers
LN2
NMOS FET driver
HN2
NMOS FET driver
SW2
Lower rail voltage for HN2 output
BST2
Boot-Strap input for HN2 output
DUTY_OUT BURST signal output pin
CT_SYNC_OUT
SRT
RT
GND
BCT
BRT
DUTY
CT synchronous signal output pin
External resistor from SRT to RT for
adjusting the start-up triangle oscillator
External resistor from RT to GND 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
STB
CP
VREF
VS
Stand-by switch
External capacitor from CP to GND for
Timer Latch
Reference voltage input pin for Error
amplifier
Error amplifier input
IS
Error amplifier input
FB
SS
COMP
Error amplifier output
External capacitor from SS to GND for Soft
Start Control
Over voltage detect pin
VCC
Supply voltage input
UVLO
External Under Voltage Lock Out
REG
Internal regulator output
BST1
Boot-Strap input for HN1 output
SW1
Lower rail voltage for HN1 output
HN1
NMOS FET driver
LN1
NMOS FET driver
REV. A