MB3882 View Datasheet(PDF) - Fujitsu

Part Name

Description

MFG CO.

MB3882

2-channel DC/DC Converter IC with Synchronous Rectifier

Fujitsu 

MB3882

s BLOCK DIAGRAM

VCC

23

5 V Reg.

13 VB

FB1 6 10 µA

−INE1 5

CS1 4

+INC1 7

1.25 V

Error Amp.1

−

+

+

OVP Comp.1

+

−

Latch1

VCC

1.47 V

R

SQ

PWM Comp.1-1

+

−

PWM Comp.2-1

+

−

< CH1 >

Drive1-1

Drive2-1

10 CB1

8 OUT1-1

9 VS1

11 OUT2-1

FB2 19 10 µA

−INE2 20

CS2 21

Error Amp.2

−

+

+

+INC2 18

1.25 V

+ OVP Comp.2

−

Latch1

VCC

1.47 V

R

SQ

PWM Comp.1-2

+

−

PWM Comp.2-2

+

−

< CH2 >

Drive1-2

Drive2-2

15 CB2

17 OUT1-2

16 VS2

14 OUT2-2

12 PGND

SCP Comp.

1 µA

CSCP 22

2.1 V

bias

SR

Latch

UVLO

OSC

1

2

CT RT

1.9 V

1.3 V

bias

VCC

Ref

(2.5 V)

Power

24

3

VREF SGND

4

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