A4993KLPTR-T

Overview

The A4993KLPTR-T is an automotive-grade stepper motor driver from Allegro MicroSystems, designed for high-reliability applications. It features a full-bridge output configuration capable of driving bipolar stepper motors with integrated current regulation and protection circuits. The device operates within a supply voltage range of 8V to 35V and supports microstepping resolutions up to 1/256 step. Packaged in a TSSOP-28 form factor, it includes thermal shutdown and over-current protection mechanisms to ensure robust performance in demanding automotive environments.

Feature Summary

• Integrated full-bridge driver architecture optimized for bipolar stepper motor control
• Built-in current regulation and diagnostic capabilities for enhanced system reliability
• Supports multiple microstepping resolutions including full, half, quarter, eighth, sixteenth, thirty-second, sixty-fourth, one-hundred-twenty-eighth, and two-hundred-fifty-sixth steps

Applications

• Automotive power seat adjustment systems
• Vehicle mirror positioning actuators
• Throttle body control mechanisms
• Fuel pump drive applications

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing components. Confirm that the part meets AEC-Q100 automotive qualification standards required for your specific application environment. Ensure compatibility with the intended microstepping control signals before finalizing procurement specifications.

Selection Notes

Select this component for applications requiring precise stepper motor control in automotive settings. Consider the TSSOP-28 package size constraints and thermal dissipation requirements relative to your PCB layout. Evaluate the need for integrated diagnostics versus external monitoring solutions based on system complexity.

Part Context

This part belongs to the A4993 series of automotive stepper drivers manufactured by Allegro MicroSystems. It is engineered to replace older discrete driver solutions with a highly integrated single-chip approach. The series is characterized by its robustness against electrical noise and ability to maintain performance across wide temperature ranges typical of vehicle under-hood operations.

Replacement Considerations

Direct replacements include the A4993KLPTR-T-G or other variants within the same A4993 family line. Verify pin-to-pin compatibility and identical electrical characteristics before substituting. Cross-reference with Allegro's official obsolescence notices to ensure long-term availability.