A3959SB

$2.69

Description：IC MOTOR DRIVER 4.5V-5.5V 24DIP
Series：-
Mfr：Allegro MicroSystems
Package：Tube

SKU:1831584f43a4 Category: Motor Drivers, Controllers Brand: Allegro MicroSystems

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Product introduction

Product Detailed Parameters

Description：IC MOTOR DRIVER 4.5V-5.5V 24DIP
Series：-
Mfr：Allegro MicroSystems
Package：Tube
Motor Type - Stepper：-
Motor Type - AC, DC：Brushed DC
Function：Driver - Fully Integrated, Control and Power Stage
Output Configuration：Half Bridge (2)
Interface：Parallel
Technology：DMOS
Step Resolution：-
Applications：General Purpose
Current - Output：3A
Voltage - Supply：4.5V ~ 5.5V
Voltage - Load：9.5V ~ 50V
Operating Temperature：-20°C ~ 150°C (TJ)
Mounting Type：Through Hole
Package / Case：24-PowerDIP (0.300", 7.62mm)
Supplier Device Package：24-DIP
Grade：-
Qualification：-

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A3959SB

Overview

The A3959SB is a full-bridge brushed DC motor driver manufactured by Allegro MicroSystems. It features a DMOS technology output stage capable of delivering up to 3 A continuous current. The device operates with a supply voltage range of 4.5 V to 5.5 V and supports load voltages from 9.5 V to 50 V. It is housed in a 24-SOIC surface-mount package. The component includes internal protection mechanisms such as thermal shutdown and crossover-current protection, ensuring reliable operation within an operating temperature range of -20°C to 150°C (TJ).

Feature Summary

Integrates a full-bridge DMOS power stage for direct brushed DC motor control.
Includes internal PWM current control and nonlinear digital-to-analog conversion for precise microstepping.
Provides comprehensive protection via internal thermal shutdown and UVLO circuits.

Applications

Bipolar stepper motor drives requiring microstepping functionality.
Brushed DC motor control systems.
General-purpose motion control applications.

Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and tape/reel specifications. Confirm RoHS compliance status as it varies by manufacturing batch and revision. Check for obsolescence notices or PCN updates regarding packaging changes before finalizing procurement orders.

Selection Notes

Select this component when a single-chip solution for bipolar stepper or brushed DC motors is required. Ensure the application voltage does not exceed the 50 V rating. Verify that the thermal management design accommodates the specified junction temperature limits and power dissipation characteristics.

Part Context

The A3959 belongs to Allegro's family of integrated motor drivers combining logic and power stages. It is designed to simplify system architecture by integrating control functions directly with the power output stage, reducing external component count compared to discrete solutions.