UA1538

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

5

www.unisonic.com.tw

QW-R109-023,B

PIN NO. PIN NAME INPUT/OUTPUT

FUNCTION

INTERMAL EQUIVALENT CIRCUIT

42

SEL

Input/Output

Empty Detect Level Switch

15kΩ

BATT

42

200kΩ

130kΩ

43

PREGND

Pre

Section

Power

Supply

Ground

Pre Section Power Supply Ground

44

PWMFIL

Input

PWM Phase Compensation

44

2kΩ

VSYS1

2kΩ

*The positive and negative outputs are the polarity with respect to the input

BLOCK DIAGRAM

33

32

31

30

29

28

27

26

25

24

23

34

35

36

37

38

+

-

39

40

41

42

43

22

21

20

V

/

I

-

+

V

/

I

-

+

V

/

I

-

+

V

/

I

-

+

++ -

44

12

3

4

56

+

-

19

18

17

16

15

14

13

12

78

9

10

11

+

+

RCHG

OUTIR

OUT1F

OUT2R

OUT2F POWGND OUT3F

OUT3R

OUT4F

OUT4R

BRAKE1

BRAKE1

AMUTE

EMP

HVcc

BTL

BTL

BTL

BTL

TSD

PSW

CLK

START

OFF

CHGVcc

SEL

PREGND

PWMFIL

CLK

MAXIMUM

DETECTION

OVER-VOLTAGE

TSD

BSEN

BATT

RESET

DEAD

SW

EO

EI

SPRT

N.C.

OP-

+

-

TRIANGLE WAVE

PRE-DRIVER POWER SUPPLY

VSYS1

OP+

VSYS2

Vref

IN3

IN4

MUTE34

IN2

MUTE2

IN1

-

-