A3989 Datasheet Bipolar Stepper and High Current DC Motor Driver

Manufacturer: Allegro MicroSystems

A3989 bipolar stepper and high current dc motor driver by Allegro MicroSystems - Datasheet Preview

Datasheet Details

Part number	A3989
Manufacturer	Allegro MicroSystems
File Size	788.35 KB
Description	Bipolar Stepper and High Current DC Motor Driver
Datasheet	A3989 Datasheet

General Description

The A3989 is designed operate at voltages up to 36 V while driving one bipolar stepper motor at currents up to 1.2A, and one DC motor at currents up to 2.4 A.

The A3989 includes a fixed off-time pulsewidth modulation (PWM) regulator for current control.

The stepper motor driver

Overview

A3989 Bipolar Stepper and High Current DC Motor Driver.

Key Features

36 V output rating.
2.4 A DC motor driver.
1.2 A bipolar stepper driver.
Synchronous rectification.
Internal undervoltage lockout (UVLO).
Thermal shutdown circuitry.
Crossover-current protection.
Very thin profile QFN package Package: 36 pin QFN with exposed thermal pad 0.90 mm nominal height (suffix EV) Not to scale.

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