MB39A119 データシートの表示（PDF） - Fujitsu

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MB39A119

DC/DC Converter IC of Synchronous Rectification for charging Li-ion battery

Fujitsu 

MB39A119

■ BLOCK DIAGRAM

Hi Side Only

ACIN

4

ACOK

5

<AC Comp.>

+

−

2.0 V

XACOK

22

+INC1 3

−INC1 2

−INE1 8

+INE1 7

<Current Amp1>

+

×25

−

100 kΩ

3.1 V

<Error Amp1>

−

+

−INE2 13

OUTC2 9

<Current Amp2>

+INC2 10

−INC2 11

+

×24.5

−

+INE2 12

<Error Amp2>

−

+

FB123 14

CVM

6

<CV Comp.>

−

+

2.6 V

0.1 V <UV Comp.>

+

−

−INC2

(VO)

<PWM Comp.>

+

−

−2.5 V

−1.5 V

Off time

Control

H: UVLO, UV

release

VCC

1

5.0 V

VB Reg.

25 VB

258 CB

Drv-1

Drv-2

27 OUT-1

26 VS

24 OUT-2

23 PGND

−INE3 15

OUTD 16

<Error Amp3>

−

+

4.2 V

Slope

Control

<UVLO>

VCC-

UVLO

VB-

UVLO

VREF-

UVLO

<SOFT>

VREF

10 µA

CS 17

<Over Current Det.>

+

+INC2

−

−INC2

0.2 V (Vo)

CT

+

−

2.6 V

OUTC2 +

0.3 V

−

VCC

<Synchronous Cnt.>

<OSC>

4.2 V

bias

<REF>

VREF

5.0 V

<CTL> DC/DC 21 CTL

ON/OFF

18

19

20

RT

VREF GND

4

DS04-27247-3E

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