A3981 - Automotive Programmable Stepper Driver

Product Overview

Allegro

Datasheet Details

Part number	A3981
Manufacturer	Allegro
File Size	2.88 MB
Description	Automotive Programmable Stepper Driver
Datasheet	A3981 Datasheet
Additional preview pages of the A3981 datasheet.

Product details

Description

TheA3981 is a flexible microstepping motor driver with built-in translator for easy operation.

It is a single-chip solution, designed to operate bipolar stepper motors in full-, half-, quarter- and sixteenth-step modes, at up to 28 V and ±1.4 A.

Features

Peak motor current up to ±1.4 A, 28 V.
Low RDS(on) outputs, 0.5 Ω source and sink, typical.
Automatic current decay mode detection/selection.
Mixed, Fast, and Slow current decay modes.
Synchronous rectification for low power dissipation.
Internal OVLO, UVLO, and Thermal Shutdown circuitry.
Crossover-current protection.
Short-circuit and open-load diagnostics.
Hot and cold thermal warning.
Stall detect feat.

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Published: Dec 6, 2023 |