A3967SLBTR

Overview

The A3967SLBTR-T is a complete microstepping motor driver with a built-in translator, designed for bipolar stepper motors. It supports full-, half-, quarter-, and eighth-step modes. The device features an output drive capability of 30 V and ±750 mA. It includes a fixed off-time current regulator capable of operating in slow, fast, or mixed current-decay modes to reduce audible noise and improve accuracy. The logic supply voltage range is 3.0 V to 5.5 V. Key protections include internal UVLO, thermal shutdown, and crossover-current protection.

Feature Summary

• Built-in translator enables operation in multiple step modes without external pulse generation
• Fixed off-time current regulator supports selectable slow, fast, or mixed decay modes
• Integrated Satlington sink drivers provide robust output stage performance
• Comprehensive protection circuitry includes thermal shutdown and crossover-current prevention

Applications

• Bipolar stepper motor control systems
• Precision motion control applications requiring reduced audible noise
• Automated equipment utilizing microstepping techniques

Procurement Notes

Verify the specific suffix against official Allegro MicroSystems documentation to confirm package type and tape-and-reel specifications. Ensure the ordering part number matches the required SOIC-24 configuration and moisture sensitivity level. Cross-reference manufacturer datasheets for any recent product change notices affecting packaging or compliance status.

Selection Notes

Select this component when bipolar stepper motor control requires integrated translation and microstepping capabilities. The ±750 mA output rating suits moderate power applications. Consider the available decay mode options for optimizing acoustic performance and step accuracy in sensitive environments.

Part Context

This component belongs to the A3967 series of microstepping drivers from Allegro MicroSystems. It is functionally similar to other devices in the family such as the A3967SLBT and A3967SLB, differing primarily in packaging and reel specifications. The series is characterized by its integrated translator and flexible current decay control.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.