AT5556

Preliminary Product Information

6-Channel DSC Motor Driver

2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.

Tel: 886-3-563-0878

Fax: 886-3-563-0879

3

04/12/10

Pin Description

Pin NO. Symbol

I/O

Description

1

IN6B

I

It combines IN6A to decide the state of the constant current driver6

2

IN6A

I

It combines IN6B to decide the state of the constant current driver6

3

IN5B

I

It combines IN5A to decide the state of the constant current driver5

4

IN5A

I

It combines IN5B to decide the state of the constant current driver5

5

IN4B

I

It combines IN4A to decide the state of the constant voltage driver4

6

IN4A

I

It combines IN4B to decide the state of the constant voltage driver4

7

IN3B

I

It combines IN3A to decide the state of the constant voltage driver3

8

IN3A

I

It combines IN3B to decide the state of the constant voltage driver3

9

IN2B

I

It combines IN2A to decide the state of the constant voltage driver2

10

IN2A

I

It combines IN2B to decide the state of the constant voltage driver2

11

IN1B

I

It combines IN1A to decide the state of the constant voltage driver1

12

IN1A

I

It combines IN1B to decide the state of the constant voltage driver1

13

PGND1

P

GND1

14

OUT1A

O

H-bridge output terminal 1A of the constant voltage driver1

15

OUT1B

O

H-bridge output terminal 1B of the constant voltage driver1

16

VM1

P

Power supply for Motor1, 2

17

OUT2A

O

H-bridge output terminal 2A of the constant voltage driver2

18

OUT2B

O

H-bridge output terminal 2B of the constant voltage driver2

19

OUT3A

O

H-bridge output terminal 3A of the constant voltage driver3

20

OUT3B

O

H-bridge output terminal 3B of the constant voltage driver3

21

VM2

P

Power supply for Motor3, 4

22

OUT4A

O

H-bridge output terminal 4A of the constant voltage driver4

23

OUT4B

O

H-bridge output terminal 4B of the constant voltage driver4

24

PGND2

P

GND2

25

VC1

I

It is used to control the output voltage of constant voltage driver1~2

26

VC2

I

It is used to control the output voltage of constant voltage driver3~4

27

VC3

I

Voltage for current limit control of the constant current driver5

28

VC4

I

Voltage for current limit control of the constant current driver6

29

VREF

I

Reference voltage being divided for VC1~4 to individually use

30

GND

P

GND

31

PS

I

Power save which can force all outputs to become open state

32

NC

33

VCC

P

Power supply

34

PVCC

P

Power supply for input voltage of charge pump

35

CP1

I

Capacitor terminal 1 for charge pump

36

CP2

I

Capacitor terminal 2 for charge pump

37

CP3

I

Capacitor terminal 3 for charge pump

38

CP4

I

Capacitor terminal 4 for charge pump

39

VG

P

Output voltage of charge pump

40

PGND

P

GND

41

NC

42

RFG1

Current detection terminal for the constant current driver5

43

OUT5A

O

H-bridge output terminal 5A of the constant current driver5

44

OUT5B

O

H-bridge output terminal 5B of the constant current driver5

45

VM3

P

Power supply for Motor5, 6

46

OUT6A

O

H-bridge output terminal 6A of the constant current driver6

47

OUT6B

O

H-bridge output terminal 6B of the constant current driver6

48

RFG2

Current detection terminal for the constant current driver6