A4989 - Dual Full-Bridge MOSFET Driver

Product Overview

Allegro

Datasheet Details

Part number	A4989
Manufacturer	Allegro
File Size	1.07 MB
Description	Dual Full-Bridge MOSFET Driver
Datasheet	A4989 Datasheet
Additional preview pages of the A4989 datasheet.

A4989 Product details

Description

The A4989 is a dual full-bridge gate driver with integrated microstepping translator suitable for driving a wide range of higher power industrial bipolar two-phase stepper motors (typically 30 to 500 W).

Motor power is provided by external N-channel power MOSFETs at supply voltages from 12 to 50 V.

Features

2-wire step and direction interface.
Dual full-bridge gate drive for N-channel MOSFETs.
Operation over 12 to 50 V supply voltage range.
Synchronous rectification.
Cross-conduction protection.
Adjustable mixed decay.
Integrated sinusoidal DAC current reference.
Fixed off-time PWM current control.
Enhanced low current control when microstepping.
Pin compatible with the A3986.

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Published: Feb 11, 2019 |