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A3979

Part Number	A3979
Manufacturer	Allegro MicroSystems
Description	Microstepping DMOS Driver
Published	Jan 31, 2007
Detailed Description	A3979 Microstepping DMOS Driver with Translator FEATURES AND BENEFITS ▪ ±2.5 A, 35 V output rating ▪ Low RDS(On) output...
Datasheet	A3979 PDF File

Overview

A3979 Microstepping DMOS Driver with Translator FEATURES AND BENEFITS ▪ ±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 PACKAGE: 28 lead TSSOP (suffix LP) with exposed thermal pad Not to scale 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...

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