A3980KLPTR

Overview

The A3980KLPTR-T is a bipolar stepper motor driver from Allegro Microsystems, designed for automotive applications with AEC-Q100 qualification. It integrates control logic and power stages in a 28-pin TSSOP-EP package. The device operates on a supply voltage of 3V to 5.5V and supports load voltages from 7V to 50V. It delivers an output current of 1A using DMOS technology. Stepping resolutions include full, half, eighth, and sixteenth step modes. The junction temperature range spans from -40°C to 150°C.

Feature Summary

• Integrates full control logic and DMOS power stages for bipolar stepper motors
• Supports multiple stepping resolutions including full, half, eighth, and sixteenth steps
• Automotive-grade component qualified to AEC-Q100 standards
• Features a 28-pin TSSOP package with exposed pad for thermal management

Applications

• Automotive seat positioning systems
• Vehicle mirror adjustment actuators
• HVAC air flap control mechanisms
• Power window and sunroof drives

Procurement Notes

Verify the specific suffix (e.g., TR-T) against the datasheet to confirm packaging type. Confirm AEC-Q100 compliance requirements match the target application. Check for obsolescence status as some variants may be marked not recommended for new designs. Ensure ESD handling protocols are followed due to moisture sensitivity level 2.

Selection Notes

Select this component for bipolar stepper motor applications requiring integrated control and power in an automotive environment. Compare output current capabilities against motor requirements. Evaluate thermal performance needs given the TSSOP-EP package. Consider interface compatibility if digital control signals are required.

Part Context

This part belongs to the A3980 family of bipolar stepper motor drivers. It shares functional similarities with other Allegro microstepping drivers but is distinct in its specific pinout and resolution settings. The family targets low-cost, high-volume automotive actuation markets.

Replacement Considerations

The A3981KLPTR-T is listed as a substitute option by distributors.