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

13

04/12/10

Application reference 4

M_VCC=5V

MCU

1uF

0.1uF

0.1uF

30.1k

5.11k

15k

47k

0.1uF

1.8

GND

IN2A

IN1A

IN2B

IN1B

IN6A

IN5A

IN6B

IN5B

IN4A

IN3A

IN4B

IN3B

PS

VCC

CP1 CP2

CP3

CP4

VG

PVCC

PGND3

OUT1A

OUT1B

OUT2A

OUT2B

PGND1

OUT3A

OUT3B

OUT4A

OUT4B

PGND2

OUT5A

OUT5B

OUT6A

OUT6B

VM1

AT5556

VC2

Vref

VC3

VC1

VC4 RFG1

RFG2

0.1uF

IRIS

AF

Zoom

Shutter

VM2

VM3

47u

PS : H active

L stand-by

M

0.1u

0.1u

Output voltage of charge pump(three times PVCC)：

3

PVCC

VG

×

=

Constant voltage ：CH1&CH2→

SAT

C

O

V

V

V

−

×

=

5

1

CH3&CH4→

SAT

C

O

V

V

V

−

×

=

5

2

Constant current：CH6→

2

4

RFG

V

I

C

o

/

=