MB3879PFV データシートの表示（PDF） - Fujitsu

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MB3879PFV

DC/DC Converter IC for Parallel Charging of 3/4 cell Li-ion & NiMH Batteries

Fujitsu 

MB3879

s PIN DESCRIPTION

Pin No.

1

2

3

4

5

6

Symbol

VCC

D0

D1

D2

D3

VSS

7

CTL

8

VDD

9

VB

10

OUT-EV

11

OUT-EC

12

OUT-EA2

13

14

15

16

17

18

19

20

21

22

23

24

25

4

OUT-EA1

IN1

+INC2

FB3

OUTC2

−INE3

+INE3

FB6

−INE6

CS2

CS1

OUT

VCCO

I/O

Descriptions

 Power supply terminal

I VDD logic input terminal

I VDD logic input terminal

I VDD logic input terminal

I VDD logic input terminal

 VDD logic ground terminal

I

Power supply control terminal. Setting “L” level on CTL terminal

places the IC in standby mode.

 VDD logic power supply terminal

O Reference voltage output terminal

Constant-voltage charging distinction signal output terminal

O

H level: Dynamically-controlled charging, Differential charging, or

Constant-voltage charging mode

L level: BATT1 or BATT2 Constant-voltage charging mode

Constant-current charge distinction signal output terminal

O

H level: Dynamically-controlled charging, Differential charging, or

Constant-voltage charging mode

L level: BATT1 or BATT2 Constant-current charging mode

Differential-charging distinction signal output terminal

O

H level: Dynamically-controlled-charging, Constant-voltaging, or

Constant-current charging mode

L level: Differential-charging mode

Dynamically-controlled charging distinction signal output terminal

O

H level: Dynamically-controlled charging, Constant-voltage charging,

or Constant-current charging mode

L level: Dynamically-controlled charging mode

I

<BATT1> Current detection amplifier (Current Amp2) input terminal

Output voltage feedback input terminal

I <BATT1> Current detection amplifier (Current Amp2) input terminal

O <BATT1> Error amplifier (Error Amp3) output terminal

O <BATT1> Current detection amplifier (Current Amp2) output terminal

I <BATT1> Error amplifier (Error Amp3) inverted input terminal

I <BATT1> Error amplifier (Error Amp3) non-inverted input terminal

O <BATT1> Error amplifier (Error Amp6) output terminal

I <BATT1> Error amplifier (Error Amp6) inverted input terminal

 Soft-start capacitor connection terminal

 Soft-start capacitor connection terminal

O External FET gate driving terminal

 Driver block power supply terminal

(Continued)

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