A3987SLPTR-T

Overview

The A3987SLPTR-T is a bipolar stepper motor driver from Allegro MicroSystems, housed in a 24-lead TSSOP package with an exposed pad. It operates on a supply voltage of 3V to 5.5V and supports load voltages up to 50V. The device delivers an output current of 1.5A and features DMOS technology with integrated full bridge microstepping capabilities. It includes a built-in translator for simplified control interface requirements.

Feature Summary

• Integrates a translator to simplify step and direction control logic
• Provides full bridge microstepping resolution options including 1/16th step
• Features adaptive decay mode for optimized current regulation

Applications

• Bipolar stepper motor control systems
• General purpose motion control applications
• Industrial automation equipment

Procurement Notes

Verify the specific suffix and tape change documentation when sourcing. Confirm that the component meets RoHS3 standards and check moisture sensitivity level classifications prior to assembly. Ensure the supplier provides valid traceability data for the manufacturing batch.

Selection Notes

Select this component for applications requiring low-voltage operation between 3V and 5.5V. It is suitable for designs needing integrated microstepping without external logic translators. Consider the thermal performance of the exposed pad for heat dissipation in high-density layouts.

Part Context

This part belongs to the A3987 series of DMOS microstepping drivers. It is designed as a complete solution combining control logic and power stages. The device targets applications where space constraints and simplified interfacing are critical design factors.

Replacement Considerations

The A3983SLPTR-T serves as a functional substitute within the same family. Verify pin compatibility and ensure the alternative meets the required load voltage specifications.