LB8682PL

No.A0294-3/5

Block Diagram

Usage Notes

• The constant-current level is set with the resistor RF. The formula for calculating the current is shown below.

Constant-current level = 0.2 ÷ RF

• Connect capacitors between VCC and ground to reduce the amount of motor noise that enters the power supply.

OUT1

OUT2

OUT3

OUT4

OUT5

OUT6

RL

4700pF

P-GND

Stepping

Motor

RFG1

RFG2

RF

S-GND

IN4

IN3

IN2

ENA2

ENA1

IN1

60k

Ω

60k

Ω

60k

Ω

60k

Ω

60k

Ω

60k

Ω

0.2V

VCC

VCC

VCC

Thermal

shutdoun circuit

Constant current

control amplifier

Reference

voltage

This capacitor may be required

depending on the mechanical shutter used.