MB39A119 View Datasheet(PDF) - Fujitsu

Part Name

Description

Manufacturer

MB39A119

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

Fujitsu 

MB39A119

■ APPLICATION EXAMPLE

R6

Q2-1 51kΩ Q2-2RS2

R39

16kΩ

R40

75kΩ

15mΩ

R15

24kΩ

R41

16kΩ

Hi Side only

ACIN

4

ACOK

5

<AC Comp.>

+

−

2.0V

XACOK

22

R34

100kΩ

CVM

VCC

6

1

<CV Comp.>

−

+

2.6V

C8

0.1µF

System

C21

0.1µF

R45

100kΩ

Q5

R46 56kΩ

+INC1

3

−INC1

2

VIN

R21

8V

24kΩ

−INE1

8

+INE1

~

25V

R20

20kΩ

C11 6800pF 7

R17

10kΩ

−INE2

R32 13

100kΩ

R51

10Ω

A

OUTC2

C18 1500pF

9

R33

10kΩ +INC2 10

C22 0.22µF

B

R52 R25 R26

10Ω 9.1kΩ15kΩ

−INC2 11

+INE2

C23

12

0.22µF

14

FB123

SW4 SW3

C13 22pF

R28 R27 R24

2kΩ 16kΩ47kΩ

C14 22pF

R8

R18

33kΩ

300kΩ

−INE3 15

C12 330pF R10

100kΩ

SW3 SW4 lchg

OFF OFF 4A

OUTD 16

ON OFF 2A

ON ON 0.4A

<Current Amp1>

+

−×25

3.1V

100kΩ

<Error Amp1>

−

+

<Current

+ Amp2>

−×24.5

<Error Amp2>

−

+

<Error Amp3>

−

+

4.2V

<SOFT>

VREF

0.1V <UV Comp.>

+

−

−INC2

(VO)

<PWM Comp.>

+

−

−2.5 V

−1.5 V

Off time

Control

H: ULVO,UV

release

Slope

Control

+

−

2.6V

5.0V

VB Reg.

Drv-1

Drv-2

C7

VB 1.0µF

25

D4

CB

28

C6

0.1µF

OUT-1

27

VS

26

OUT-2

24

C1

4.7µF

A

B

Q1-1

L1 lchg

VO

5.2µH RS1

R2

33mΩ

15Ω

Q1-2 D1

C2

4.7µF

C3 C4 C5

4.7µF 4.7µF 4.7µF Battery

PGND

23

<UVLO> VCC

UVLO

VB

UVLO

VREF

UVLO

Output voltage (Battery

voltage) is adjustable.

C9

0.22µF

CS

17

10µA

<Over Current Det.>

+INC2

−INC2

0.2V

(VO)

CT

+

OUTC2 −

0.3V <Sync Cnt.>

VCC

<OSC>

4.2V

bias

<REF>

VREF

5.0V

<CTL> DC/DC 21 CTL

ON/OFF

18

RT R19

39kΩ

19

20

VREF

GND

C10

0.1µF

32

DS04-27247-3E

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