MB3881 查看數據表（PDF） - Fujitsu

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MB3881

8-ch DC/DC Converter IC with Synchronous Rectifier for Voltage Step-up and Step-down

Fujitsu 

MB3881

• Enlarged view of C

FB8 4

−IN8 5

+IN8 6

−IN8(C) 7

+IN8(C) 8

DTC8 3

Error

− Amp.8

+

SCP

Comp.8

−

+

PWM

Comp.8

−

−

+

CH8

Drive

8

64 OUT8

2 RB8

1 GND(O)-2

CTL

1, 3, 4

CTL-2 29

CTL-3 30

CTL-4 31

CS CTL

Logic

Buff

Buff ×0.8

CS 32

VB 36

2V

OSC

35 33 34

SYNC RT CT

CT1 1.73 V

1.0 V

CT2 1.73 V

CT

1.0 V

0.8 V

0.3 V

UVLO

SCP

26

CSCP

Power

Ref ON/OFF

CTL

2.5 V

24

25

VREF GND

27 VCC H : ON (Power/CH1, 3, 4, 8)

L : OFF (Standby mode)

28 CTL-1 (64 pin)

8

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