MB3885 Fujitsu Microelectronics, Inc., MB3885 Datasheet - Page 3

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MB3885

Manufacturer Part Number
MB3885
Description
1-channel Dc/dc Converter Ic With Synchronous Rectifier
Manufacturer
Fujitsu Microelectronics, Inc.
Datasheet
Pin No.
PIN DESCRIPTIONS
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
Symbol
CSCP
PGND
SGND
OUT1
OUT2
VREF
N.C.
N.C.
VCC
N.C.
N.C.
CS
CB
CT
RT
FB
VB
VS
INE
INC
I/O
O
O
O
O
O
I
I
No connection
No connection
Timer latch short protection capacitor connection terminal
Triangular wave oscillator frequency setting capacitor connection terminal
Triangular wave oscillator frequency setting resistor connection terminal
Soft-start capacitor connection terminal (Also used as output control)
Error Amp. output terminal
Error Amp. inverted input terminal
Overvoltage comparator non-inverted input terminal
Reference voltage, control circuit power supply terminal
Output circuit bias output terminal
Output bootstrap terminal
Insert a capacitor between the CB and VS terminals, to bootstrap the IC in-
ternal output transistor.
Totem pole output terminal (External main side FET gate drive)
External main side FET source connection terminal
Totem pole output terminal. (External synchronous rectifier side FET gate
drive)
Ground terminal
Ground terminal
Reference voltage output terminal
No connection
No connection
Description
MB3885
3

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