No.7464-3/8

STK672-210

Internal Circuit

SUB

Off time

setting

Off time

setting

4

5

øAB

8

øA

9

3

2

SP

11

PG

1

Vref

12

øBB

6

øB

7

VCC2

10

Sample Application Circuit

STK672-210

VCC2 = 5 V

9

8

7

6

12

1

10

Stepping

motor

Co2 = 10

µF +

+

Ro1

Ro2

S.GND

øBB

øB

øAB

øA

VCC1 = 24 V min.

Co1 = 220

µF

P.GND

2

3

4

5

11

ITF02289

• The Co1 ground lead must be connected as close as possible to pin 1 on the hybrid IC.

• HC type CMOS levels are recommended as the input specifications for pins 6 to 9.

• Pull-up resistors must be used for TTL level inputs. (Recommended value: 2 k

Ω)

• Excitation control input specifications

Corresponding output pin

Corresponding excitation control input signal

Active: High

Activ: Low

2

øB

øBB

3

øBB

øB

4

øA

øAB

5

øAB

øA