BD9882FV-E2 Datasheet, PDF (3/5 Pages) Rohm – Silicon Monolithic Integrated Circuit

〇Package Dimensions
(Include BURR 12.85)
BD9882F
１
Device Mark
Lot No.
3/4
BD9882FV
SOP20 (Unit:mm)
SSOP-B20 (Unit:mm)
〇Block Diagram
SS
STB
STB
BLOCK
SYSTEM ON/OFF
FB
IS
-
+
VS
-
+
F/B
BLOCK
CT RT
BRT BCT DUTY
VCC
+
OSC
BOSC
-
PWM
BLOCK
VCC
UVLO
-
+
LOGIC
BLOCK
OUTPUT
BLOCK
REG
GND
VCC
Reg
BLOCK
VS
PROTECT
IS
BLOCK
COMP
SCP SRT
〇Pin Description
Pin No.
1
2
3
N1
N2
4
PGND
5
FAIL
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Pin
Name
DUTY
BRT
BCT
RT
SRT
CT
GND
FB
IS
VS
STB
COMP
REG
SS
SCP
N2
PGND
N1
FAIL
Vcc
Function
Control PWM mode and BURST mode
External resistor from BRT to GND for
adjusting the BURST triangle oscillator
External capacitor from BCT to GND for
adjusting the BURST triangle oscillator
External resistor from SRT to RT for
adjusting the triangle oscillator
External resistor from SRT to RT for
adjusting the triangle oscillator
External capacitor from CT to GND for
adjusting the triangle oscillator
GROUND
Error amplifier output
Error amplifier input①
Error amplifier input②
Stand-by switch
Under, over voltage detect
Internal regulator output
External capacitor from SS to GND for Soft
Start Control
External capacitor from SCP1 to GND for
Timer Latch
FET driver
Ground for FET drivers
FET driver
Protect clock output
Supply voltage input
REV. A