Allegro Microsystems A3958SB/SLB DMOS Full-Bridge PWM Motor Driver Datasheet

This data sheet introduces the features of A3958SB/SLB 3958 DMOS FULL-BRIDGE PWM MOTOR DRIVER, including the functions, performance, appearance and size of the product.

Brand: Allegro
Category: Other Electronics
Document type: Datasheet
Language: English
Pages: 13
File format: PDF
File size: 559 KB
Published: 03 August, 2012
Updated: 01 October, 2023
Model: A3958SB
MD5 checksum: A6648F200C9F9B3C81F5C2AAB15F9B7D
PDF: Allegro Microsystems A3958SB/SLB DMOS Full-Bridge PWM Motor Driver Datasheet PDF

About this manual

The A3958SB and A3958SLB are DMOS full-bridge PWM motor drivers designed for pulse-width modulated (PWM) current control of DC motors. These devices support continuous output currents up to +2 A and operating voltages up to 50 V.

What's inside

Absolute Maximum Ratings
Features
Functional Block Diagram
Electrical Characteristics
Serial Interface
Bit Function Definitions
Serial Port Write Timing

Specifications

Continuous Output Current	+2 A
Operating Voltage	50 V
Output On Resistance (Typical)	270 mΩ
Load Supply Voltage Range	20 V to 50 V

Frequently asked questions

Does the A3958 include internal protection circuitry?

Yes, it includes thermal shutdown with hysteresis and crossover-current protection.

What is the maximum continuous output current rating?

The device supports continuous output currents up to +2 A.

What are the absolute maximum ratings for load supply voltage and logic supply voltage?

The load supply voltage must not exceed 50 V, and the logic supply voltage must not exceed 7.0 V.

What is the operating temperature range for this motor driver?

The device operates within a temperature range of -20°C to +85°C.

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