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A3951 - FULL-BRIDGE PWM MOTOR DRIVER

Datasheet Summary

Description

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Features

  • I I I I I I I I ± 2 A Continuous Output Current Rating 50 V Output Voltage Rating Internal PWM Current Control Internal Transient Suppression Diodes Under-Voltage Lockout Internal Thermal Shutdown Circuitry Crossover-Current Protection Default Brake Current Limit Always order by complete part number: Part Number A3951SB A3951SW Package 16-Pin DIP 12-Pin Power-Tab SIP RθJA 43°C/W 36°C/W RθJT 6.0°C/W 2.0°C/W 3951 FULL-BRIDGE PWM MOTOR DRIVER.

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Datasheet preview – A3951

Datasheet Details

Part number A3951
Manufacturer Allegro MicroSystems
File Size 201.73 KB
Description FULL-BRIDGE PWM MOTOR DRIVER
Datasheet download datasheet A3951 Datasheet
Additional preview pages of the A3951 datasheet.

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Full PDF Text Transcription

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3951 A3951SB 1 2 3 4 LOGIC GROUND LOGIC SUPPLY PHASE ENABLE 5 6 7 8 VBB VCC 12 11 10 9 GROUND SENSE OUTA LOAD SUPPLY 16 15 14 13 LOAD SUPPLY OUTB GROUND GROUND FULL-BRIDGE PWM MOTOR DRIVER Designed for bidirectional pulse-width modulated current control of inductive loads, the A3951SB and A3951SW are capable of continuous output currents to ±2 A and operating voltages to 50 V. Internal fixed off-time PWM current-control circuitry can be used to regulate the maximum load current to a desired value. The peak load current limit is set by the user’s selection of an input reference voltage and external sensing resistor. The fixed off-time pulse duration is set by a userselected external RC timing network.
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