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A3973 Datasheet, Allegro MicroSystems

A3973 driver equivalent, dual dmos full-bridge microstepping pwm motor driver.

A3973 Avg. rating / M : 1.0 rating-11

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A3973 Datasheet

Features and benefits

▪ ±1 A, 35 V Continuous Output Rating ▪ Low RDS(on) DMOS Output Drivers ▪ Optimized Microstepping via 6-Bit Linear DACs ▪ Programmable Mixed, Fast, and Slow Current Decay.

Application

Samples are no longer available. Date of status change: November 1, 2010 Recommended Substitutions: For existing cust.

Description

Designed for pulse-width modulated (PWM) current control of bipolar microstepping stepper motors, the A3973 is capable of continuous output currents to ±1 A and operating voltages to 35 V. Internal fixed off-time PWM current-control timing circuitry.

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A3973 Page 1 A3973 Page 2 A3973 Page 3

TAGS

A3973
Dual
DMOS
Full-Bridge
Microstepping
PWM
Motor
Driver
A3971
A3972
A3974
Allegro MicroSystems

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