A3968SLBTR

Overview

The A3968SLBTR-T is a dual full-bridge PWM motor driver manufactured by Allegro MicroSystems. It integrates two H-bridges capable of bidirectional control for DC motors, supporting continuous output currents of ±650 mA and operating voltages up to 30 V. The device features internal fixed-frequency PWM current control, Satlington sink drivers, and user-selectable blanking windows. Protection mechanisms include internal thermal shutdown, crossover-current protection, UVLO, and internal ground-clamp and flyback diodes. It is housed in a 16-SOIC package.

Feature Summary

• Integrates two H-bridges for bidirectional DC motor control with continuous output capability
• Includes internal fixed-frequency PWM current control circuitry for precise winding current management
• Provides comprehensive protection via internal thermal shutdown, crossover-current protection, and UVLO

Applications

• Bidirectional DC motor control systems
• General-purpose motion control applications
• Automotive electronic modules requiring robust motor driving

Procurement Notes

Verify the specific suffix (e.g., -T) against official datasheets to confirm packaging type, as standard designations may vary. Confirm RoHS compliance status through manufacturer documentation, as historical data indicates variations across production runs. Ensure the component matches the required SOIC-16 footprint and pinout configuration for your PCB layout.

Selection Notes

Select this component when a dual H-bridge solution with integrated PWM current control is required for low-to-medium power DC motors. Consider the ±650 mA continuous current rating and 30 V voltage limit during system design. Evaluate the need for external current-sensing resistors if peak load current limits require adjustment beyond internal defaults.

Part Context

The A3968 belongs to Allegro's family of dual full-bridge PWM motor drivers. It shares functional similarities with the A3968SA but differs in package style and pinout. This series is designed for applications requiring reliable bidirectional motor control with integrated protection features, serving as a compact solution for motion control tasks.

Replacement Considerations

L293DD013TR is listed as a similar replacement part.