NJW4351 데이터 시트보기 (PDF) - Japan Radio Corporation

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NJW4351

Unipolar Stepper Motor Driver

Japan Radio Corporation  

NJW4351

Unipolar Stepper Motor Driver

GENERAL DESCRIPTION

The NJW4351 is a high efficiency DMOS unipolar stepper

motor driver IC. Compared to previous devices, it is more suitable

for low voltage operation, capable of handling 5.0V, 3.3V and the

like logic circuits. Drive Stage consists of DMOS which produces

high efficiency and low heat generation motor drive circuit.

The motor can be controlled by the STEP and DIR system.

Further more, to improve controllability of system, MO, ENABLE,

RESET and PD function are included, various applications are

possible.

FEATURES

• Supply Voltage

VDD=2.7 to 5.5V

VMM= to 55V

• Output Current

Io=1.5A peak at VDD=5V

• Low Quiescent Current IDD=500µA typ.

• STEP&DIR Input Operation (Internal Translator)

• HALF/FULL Mode Generation

• TTL compatible Input With Schmitt-Comparator

• ENABLE Function

• RESET Function

• MO (Motor Origin Monitor) -Position-indication Output

• PD (Standby) Function

• Under Voltage Lock Out

• Thermal Shutdown Circuit

• Alarm Output Function (As the protection circuit operates)

• BCD Technology

• Package Outline

SSOP20-C3, DIP16

BLOCK DIAGRAM

HSM

STEP

DIR

RESET

NJW4351

VDD

POWER ON

RESET

TRANSLATOR

GATE

DRIVE

PACKAGE OUTLINE

NJW4351VC3

NJW4351D

OUT2B

OUT2A

OUT1B

OUT1A

ENABLE

PD

MO

ALARM

GND

Bias Circuit

UNDER VOLTAGE

LOCK OUT

THERMAL SHUT

DOWN

SENSE1

SENSE2

‘Ver.2010-03-26

-1-

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