2-Phase Unipolar Stepper Motor Driver

SLA7050M/7051M/7052M

October 2005

Sanken Electric Co.,Ltd.

I03-002EA-051006

Block diagram (Connection diagram)

Pin arrangement ,Functional table

Pin Number

Symbol

Function

1

OutA

Phase A Output

2

N.C.

No Contact

3

OutA/

Phase A/ Output

4

Phase A Gate

5

Vcc

Logic supply

6

SenseA

Phase A current sense

7

Clock

Step clock

8

Sync

Synchronous PWM control

9

Ref

Current reference & Output disable

10

GND

GND

11

CW/CCW

Forward reverse control

12

Full/Half

Full step half step control

13

SenseB

Phase B current sense

14

Vs

Load supply

15

Phase B Gate

16

OutB/

Phase B/ Output

17

N.C.

No Contact

18

OutB

Phase B Output

※

The gating signal of MOS FET outputs, and use 4pin and 15pin by the unwiring, please.

Reg

Sequencer

PWM

Control

PWM

Control

Synchro

Control

OSC

OSC

Sleep

Control

＋

－

＋

－

MIC

GA

GA/

GB/

GB

13

2

4

11 12

14

7

5

17

16

18

13

10

8

9

6

15

7/14