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MB39A110

4-ch DC/DC Converter IC with Synchronous Rectification

Fujitsu 

MB39A110

■ PIN DESCRIPTION

Block

CH1

Pin No.

35

36

37

38

Symbol

DTC1

FB1

−INE1

CS1

33

OUT1-1

32

4

3

2

CH2

1

31

OUT1-2

DTC2

FB2

−INE2

CS2

OUT2-1

30

16

17

CH3

18

19

27

23

22

CH4

21

20

26

13

OSC

12

OUT2-2

DTC3

FB3

−INE3

CS3

OUT3

DTC4

FB4

−INE4

CS4

OUT4

CT

RT

I/O

Descriptions

I

Dead time control terminal

O Error amplifier output terminal

I

Error amplifier inverted input terminal

⎯ Soft-start setting capacitor connection terminal

O

P-ch drive output block ground terminal

(External main side FET gate driving)

O

N-ch drive output block ground terminal

(External synchronous rectification side FET gate driving)

I

Dead time control terminal

O Error amplifier output terminal

I

Error amplifier inverted input terminal

⎯ Soft-start setting capacitor connection terminal

O

P-ch drive output block ground terminal

(External main side FET gate driving)

O

N-ch drive output block ground terminal

(External synchronous rectification side FET gate driving)

I

Dead time control terminal

O Error amplifier output terminal

I

Error amplifier inverted input terminal

⎯ Soft-start setting capacitor connection terminal

O P-ch drive output terminal

I

Dead time control terminal

O Error amplifier output terminal

I

Error amplifier inverted input terminal

⎯ Soft-start setting capacitor connection terminal

O N-ch drive output terminal

⎯

Triangular wave frequency setting capacitor

connection terminal

⎯

Triangular wave frequency setting resistor

connection terminal

(Continued)

3

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