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A3977

Part Number	A3977
Manufacturer	Allegro
Description	Microstepping DMOS Driver
Published	Apr 22, 2014
Detailed Description	A3977 Microstepping DMOS Driver with Translator FEATURES AND BENEFITS • ±2.5 A, 35 V output rating • Low RDS(on) output...
Datasheet	A3977 PDF File

Overview

A3977 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 • Mixed, fast, and slow current decay modes • Home output • Synchronous rectification for low power dissipation • Internal UVLO and thermal shutdown circuitry • Crossover-current protection Package: 28-pin TSSOP (suffix LP) with Exposed Thermal Pad Not to scale DESCRIPTION The A3977 is a complete microstepping motor driver with built-in translator.
It is designed to operate bipolar stepper motors in full-, half-, quarter-, and eighth-step modes...

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