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A3955

Part Number	A3955
Manufacturer	Allegro MicroSystems
Description	FULL-BRIDGE PWM MICROSTEPPING MOTOR DRIVER
Published	Mar 23, 2005
Detailed Description	A3955 Full-Bridge PWM Microstepping Motor Driver Features and Benefits ▪ ±1.5 A continuous output current ▪ 50 V output...
Datasheet	A3955 PDF File

Overview

A3955 Full-Bridge PWM Microstepping Motor Driver Features and Benefits ▪ ±1.
5 A continuous output current ▪ 50 V output voltage rating ▪ Internal PWM current control ▪ 3-bit nonlinear DAC ▪ Fast, mixed fast/slow, and slow current-decay modes ▪ Internal transient-suppression diodes ▪ Internal thermal shutdown circuitry ▪ Crossover-current and UVLO protection Packages: Package B, 16-pin DIP with exposed tabs Package LB, 16-pin SOIC with internally fused pins Not to scale Description The A3955 is designed to drive one winding of a bipolar stepper motor in a microstepping mode.
The outputs are rated for continuous output currents to ±1.
5 A and operating voltages to 50V.
Internal pulse widt...

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