Machine Design

Stepper Driver with Built-In Translator

The A3982 is a bipolar stepper motor drive with DMOS outputs rated at 35 V and ±1.5 A (2 A peak).

The A3982 is a bipolar stepper motor drive with DMOS outputs rated at 35 V and ±1.5 A (2 A peak). Higher motor currents and reduced temperature rise come from low on resistance DMOS outputs and synchronous rectification. A simple two-wire step-and-direction interface in full or half-step modes control the 24-pin SOIC package. Power dissipation during PWM operation is improved with internal synchronous rectification-control circuitry. A fixed off-time output current regulator automatically selects slow or mixed-decay modes.

Allegro MicroSystems Inc.
115 Northeast Cutoff
Worcester, MA 01606
(508) 853-5000
allegromicro.com

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