3964 - DUAL FULL-BRIDGE PWM MOTOR DRIVER

Description

Internal PWM Current Control.

The A3964SB and A3964SLB contain a fixed off-time pulse-width modulated (PWM) current-control circuit that can be used to limit the load current to a desired value.

Features

s s s s s s s ±800 mA Continuous Output Current Rating 30 V Output Voltage Rating Internal PWM Current Control, Saturated Sink Drivers Internally Generated, Precision 2.5 V Reference Internal Transient-Suppression Diodes Internal Thermal-Shutdown Circuitry Crossover-Current Protection, UVLO Protection Always order by complete part number: Part Number A3964SB A3964SLB Package 24-Pin DIP 20-Lead Wide-Body SOIC 3964 DUAL FULL-BRIDGE PWM MOTOR DRIVER A3964SB.

Allegro MicroSystems

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Datasheet Details

Part number	3964
Manufacturer	Allegro MicroSystems
File Size	94.33 KB
Description	DUAL FULL-BRIDGE PWM MOTOR DRIVER
Datasheet	3964 Datasheet
Additional preview pages of the 3964 datasheet.

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Full PDF Text Transcription

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3964 DUAL FULL-BRIDGE PWM MOTOR DRIVER 3964 Designed for pulse-width modulated (PWM) current control of bipolar stepper motors, the A3964SB and A3964SLB are capable of continuous output currents to ±800 mA and operating voltages to 30 V. Internal fixed off-time PWM current-control circuitry can be used to regulate the maximum load current to a desired value. An internal precision voltage reference is provided to improve motor peak-current control accuracy. The peak load current limit is set by the user’s selection of an external resistor divider and current-sensing resistors. The fixed off-time pulse duration is set by user-selected external RC timing networks.

Published: Mar 30, 2005 |