A3968SLBTR-T

Overview

The A3968SLBTR-T is a dual full-bridge PWM motor driver manufactured by Allegro MicroSystems. It provides bidirectional control for two brushed DC motors with continuous output currents of ±650 mA and operating voltages up to 30 V. The device integrates internal fixed-frequency pulse-width modulated current-control circuitry, Satlington sink drivers, and user-selectable blanking windows. Protection features include internal thermal shutdown, crossover-current protection, UVLO, and internal ground-clamp and flyback diodes. It operates within a temperature range of -20°C to +150°C (junction) and is housed in a 16-SOIC package.

Feature Summary

• Integrates two H-bridges capable of controlling two brushed DC motors bidirectionally
• Includes internal fixed-frequency PWM current-control circuitry for precise motor winding regulation
• Features comprehensive protection mechanisms including thermal shutdown, crossover-current protection, and UVLO

Applications

• Bidirectional control of two brushed DC motors
• Motor winding current regulation via PWM
• Applications requiring integrated power and control stages

Procurement Notes

Verify the component status as discontinued or obsolete before procurement planning. Confirm availability through authorized distributors or approved substitute sources. Ensure compatibility with existing design parameters if replacing active inventory. Check for moisture sensitivity level requirements during storage and handling procedures.

Selection Notes

Select this component for applications requiring dual independent motor control with integrated current sensing. Consider the ±650 mA continuous current rating and 30 V voltage limit for load matching. Evaluate the need for internal thermal protection and PWM control integration versus discrete solutions. Verify package dimensions and pinout compatibility with the target PCB layout.

Part Context

The A3968 series belongs to Allegro MicroSystems' portfolio of fully integrated motor drivers combining control logic and power DMOS technology. This specific part number represents the tape-and-reel variant of the A3968SLB, designed for automated surface-mount assembly. It serves as a compact solution for multi-motor systems in consumer and industrial electronics.

Replacement Considerations

L293DD013TR by STMicroelectronics is listed as a similar replacement option.