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A3955 - FULL-BRIDGE PWM MICROSTEPPING MOTOR DRIVER

Datasheet Summary

Description

The A3955 is designed to drive one winding of a bipolar stepper motor in a microstepping mode.

The outputs are rated for continuous output currents to ±1.5 A and operating voltages to 50V.

Features

  • ±1.5 A continuous output current.
  • 50 V output voltage rating.
  • Internal PWM current control.
  • 3-bit nonlinear DAC.
  • Fast, mixed fast/slow, and slow current-decay modes.
  • Internal transient-suppression diodes.
  • Internal thermal shutdown circuitry.
  • Crossover-current and UVLO protection Packages: Package B, 16-pin DIP with exposed tabs Package LB, 16-pin SOIC with internally fused pins Not to scale.

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Datasheet preview – A3955

Datasheet Details

Part number A3955
Manufacturer Allegro MicroSystems
File Size 355.27 KB
Description FULL-BRIDGE PWM MICROSTEPPING MOTOR DRIVER
Datasheet download datasheet A3955 Datasheet
Additional preview pages of the A3955 datasheet.

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Full PDF Text Transcription

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A3955 Full-Bridge PWM Microstepping Motor Driver Features and Benefits ▪ ±1.5 A continuous output current ▪ 50 V output voltage rating ▪ Internal PWM current control ▪ 3-bit nonlinear DAC ▪ Fast, mixed fast/slow, and slow current-decay modes ▪ Internal transient-suppression diodes ▪ Internal thermal shutdown circuitry ▪ Crossover-current and UVLO protection Packages: Package B, 16-pin DIP with exposed tabs Package LB, 16-pin SOIC with internally fused pins Not to scale Description The A3955 is designed to drive one winding of a bipolar stepper motor in a microstepping mode. The outputs are rated for continuous output currents to ±1.5 A and operating voltages to 50V.
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