A3988SEVTR-T

Overview

The A3988SEVTR-T is a bipolar stepper motor driver manufactured by Allegro MicroSystems, designed for general-purpose motion control applications. It utilizes DMOS technology and features a parallel interface within a 36-VFQFN package with exposed pad. The device supports full, half, and quarter-step resolutions. It operates with a supply voltage range of 3V to 5.5V and a load voltage range of 8V to 36V. The output current capability is rated at 1.2A. The component functions across an operating temperature range of -20°C to 85°C (TA) and is moisture sensitive.

Feature Summary

• Integrates full control and power stages for simplified design
• Supports multiple microstepping resolutions including full, half, and quarter steps
• Features DMOS technology for efficient power management

Applications

• General-purpose motor drive systems
• Bipolar stepper motor control
• Brushed DC motor applications

Procurement Notes

Verify the specific package variant and manufacturer documentation prior to procurement. Confirm that the component status aligns with project requirements, as availability may be restricted due to minimum order quantities or lifecycle status. Ensure compliance with RoHS3 specifications and handle according to moisture sensitivity level guidelines during storage and assembly processes.

Selection Notes

Select this component when a compact solution for driving bipolar stepper motors is required. The integrated nature of the driver reduces external component count. Consider the 1.2A output limit and the 36V load voltage ceiling. Verify compatibility with the system's logic voltage levels and thermal dissipation capabilities given the QFN package constraints.

Part Context

This part belongs to the A3988 series from Allegro MicroSystems, which focuses on integrated motor drivers. It shares architectural similarities with other devices in the family but differs in package type and specific electrical ratings compared to variants like the A4988 or A3988SJPTR-T. The series targets applications requiring reliable stepper motor control with minimal external circuitry.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided data.