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A3989 - Bipolar Stepper and High Current DC Motor Driver

Datasheet Summary

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.

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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Datasheet preview – A3989

Datasheet Details

Part number A3989
Manufacturer Allegro MicroSystems
File Size 788.35 KB
Description Bipolar Stepper and High Current DC Motor Driver
Datasheet download datasheet A3989 Datasheet
Additional preview pages of the A3989 datasheet.

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Full PDF Text Transcription

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A3989 Bipolar Stepper and High Current DC Motor Driver FEATURES AND BENEFITS ▪ 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 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.
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