A3979 Microstepping DMOS Driver

Allegro MicroSystems

Description

A3979 Microstepping DMOS Driver with Translator .
The A3979 is a complete microstepping motor driver with built-in translator, designed as a pin-compatible replacement for the successful A3977, with e.

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Datasheet Specifications

Part number: A3979
Manufacturer: Allegro MicroSystems
File Size: 944.86 KB
Datasheet: A3979_AllegroMicroSystems.pdf
Description: Microstepping DMOS Driver

Features

* ▪ ±2.5 A, 35 V output rating ▪ Low RDS(On) outputs: 0.28 Ω source, 0.22 Ω sink, typical ▪ Automatic current decay mode detection/selection ▪ 3.0 to 5.5 V logic supply voltage range ▪ Slow, Fast or Mixed current decay modes ▪ Home output ▪ Synchronous rectification for low power dissipation ▪ Interna

Applications

* where a complex microprocessor is unavailable or is overburdened. Internal synchronous-rectification control circuitry is provided to improve power dissipation during PWM operation. Internal circuit protection includes: thermal shutdown with hysteresis, UVLO (undervoltage lockout), and crossover-cur

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A3979 Microstepping DMOS Driver Allegro MicroSystems

Allegro MicroSystems A3979-like datasheet