NJM3717 데이터 시트보기 (PDF) - Japan Radio Corporation

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NJM3717

STEPPER MOTOR DRIVER

Japan Radio Corporation  

NJM3717

STEPPER MOTOR DRIVER

s GENERAL DESCRIPTION

NJM3717 is a stepper motor diver, which consists of a LS-TTL

compatible logic input stage, a current sensor, a monostable

multivibrator and a high power H-bridge output stage with built-in

protection diodes.

The output current is up to 1200mA. Two NJM3717 and a small

number of external components form a complete control and drive

unit for stepper motor systems.

s PACKAGE OUTLINE

NJM3717D2

NJM3717E2

s FEATURES

• Half-step and full-step modes

• Switched mode bipolar constant current drive

• Wide range of current control 5 - 1200 mA

• Wide voltage range 10 - 50 V

• Thermal overload protection

• Packages DIP16 / PLCC28 / EMP20

s BLOCK DIAGRAM

NJM3717FM2

Phase

I1

I0

VR

GND

VCC

VMM

VMM

Schmitt

Trigger

Time

Delay

1

1

1

MA

MB

&&&&

≥1

≥1

+

–

+

–

+

–

Current Sensor

Output Stage

Monostable

t off

= 0.69 • R • C

TT

T

E

NJM3717

Figure 1. Block diagram

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