A4986SESTR-T

Overview

The A4986SESTR-T is a bipolar stepper motor driver from Allegro MicroSystems, utilizing DMOS technology in a 24-QFN package. It supports a load voltage range of 8V to 35V and delivers an output current of 2A. The device operates with a supply voltage between 3V and 5.5V, featuring step resolutions of 1, 1/2, 1/4, and 1/8. It functions within a junction temperature range of -20°C to 150°C.

Feature Summary

• Integrates full control and power stages for simplified design
• Supports multiple microstepping resolutions for smooth motion
• Includes built-in overcurrent protection mechanisms

Applications

• General purpose stepper motor control
• Precision positioning systems
• Automated machinery components

Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and tape/reel specifications. Ensure compatibility with system voltage requirements before integration. Cross-reference part numbers with manufacturer documentation to avoid substitution errors during procurement.

Selection Notes

Select this component for applications requiring integrated bipolar drive solutions with high thermal performance. Consider the 2A output capability and wide voltage range when designing power stages. Evaluate the available microstepping options for required motion smoothness.

Part Context

This part belongs to the A4986 series of stepper motor drivers. It represents a specialized solution for controlling bipolar stepper motors with integrated logic and power stages. The QFN packaging facilitates surface mount assembly in compact electronic designs.

Replacement Considerations

Consult official Allegro MicroSystems documentation for verified substitute part numbers. Do not assume cross-compatibility with other series without explicit manufacturer confirmation.