A3981 Datasheet - Allegro

A3981 Automotive Programmable Stepper Driver

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. The A3981 can be controlled by simple Step and Directi.

A3981 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

* Interna

A3981-Allegro.pdf