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A3987

Part Number	A3987
Manufacturer	Allegro MicroSystems
Description	DMOS Microstepping Driver
Published	Apr 2, 2007
Detailed Description	A3987 DMOS Microstepping Driver with Translator FEATURES AND BENEFITS ▪ Low RDS(on) outputs ▪ Short-to-ground protectio...
Datasheet	A3987 PDF File

Overview

A3987 DMOS Microstepping Driver with Translator FEATURES AND BENEFITS ▪ Low RDS(on) outputs ▪ Short-to-ground protection ▪ Shorted load protection ▪ Automatic current decay mode detection/selection ▪ Mixed and slow current decay modes ▪ Synchronous rectification for low power dissipation ▪ Internal UVLO and thermal shutdown circuitry ▪ Crossover-current protection PACKAGE: 24-pin TSSOP with exposed thermal pad (suffix LP) Not to scale DESCRIPTION The A3987 is a complete microstepping motor driver with built-in translator for easy operation.
It is designed to operate bipolar stepper motors in full, half, quarter, and sixteenth step modes, with output drive capability of 50 V and ±1.
5 A.
The...

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