MB3882 Datasheet, PDF (3/30 Pages) Fujitsu Component Limited. – 2-channel DC/DC Converter IC with Synchronous Rectifier

MB3882
s PIN DESCRIPTIONS
Pin No. Symbol
I/O
1
CT

2
RT

3
SGND

4
CS1

5
−INE1
I
6
FB1
O
7
+INC1
I
8
OUT1-1
O
9
VS1

10
CB1

11
OUT2-1
O
12
PGND

13
VB
O
14
OUT2-2
O
15
CB2

16
VS2

17
OUT1-2
O
18
+INC2
I
19
FB2
O
20
−INE2
I
21
CS2

22
CSCP

23
VCC

24
VREF
O
Description
Triangular wave oscillator frequency setting capacitor connection terminal
Triangular wave oscillator frequency setting resistor connection terminal
Ground terminal
CH1 soft start capacitor connection terminal. (Also used as channel control)
CH1 error Amp. inverted input terminal
CH1 error Amp. output terminal
CH1 overvoltage comparator non-inverted input terminal
CH1 totem pole output terminal. (External main side FET gate drive)
CH1 external main side FET source connection terminal
CH1 boot capacitor connection terminal. Connect capacitor between the
CB1 terminal and VS1 terminal.
CH1 totem pole output terminal. (External synchronous rectifier side FET
gate drive)
Ground terminal
Output circuit bias output terminal
CH2 totem pole output terminal. (External synchronous rectifier side FET
gate drive)
CH2 boot capacitor connection terminal. Connect capacitor between the
CB2 terminal and VS2 terminal.
CH2 external main side FET source connection terminal.
CH2 totem pole output terminal. (External main side FET gate drive)
CH2 overvoltage comparator non-inverted input terminal
CH2 error Amp. output terminal
CH2 error Amp. inverted input terminal
CH2 soft start capacitor connection terminal. (Also used as channel control)
Timer latch short protection capacitor connection terminal
Reference voltage, control circuit power supply terminal
Reference voltage output terminal
3