A3979 - Microstepping DMOS Driver

Name: A3979
SKU: A3979-570518

Allegro MicroSystems

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Datasheet Details

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

A3979 Product details

Description

The A3979 is a complete microstepping motor driver with built-in translator, designed as a pin-compatible replacement for the successful A3977, with enhanced microstepping (1/16 step) precision.

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.
Internal UVLO and thermal shutdown circuitry.
Crossover-current protection.

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Published: Jan 31, 2007 |