A3938SLDTR

Overview

The A3938SLDTR-T is a three-phase brushless DC motor driver manufactured by Allegro MicroSystems. It integrates power MOSFETs and operates within an 18V to 50V supply range. The device features a 38-TSSOP package with dimensions of 4.40mm width. It supports parallel and PWM interfaces for commutation and direction management. The operational temperature range spans from -20°C to +85°C, ensuring reliable performance in standard environments.

Feature Summary

• Integrates three half-bridge pre-drivers with internal power MOSFETs
• Supports commutation and direction management via parallel or PWM interfaces

Applications

• Three-phase brushless DC motor control
• General purpose motor driving applications

Procurement Notes

Verify the exact suffix (e.g., T) as datasheets reference A3938SLDTR-T. Confirm RoHS compliance status, noting that some variants may differ. Check current availability as distribution channels vary. Ensure the 38-TSSOP package matches PCB footprint requirements before ordering.

Selection Notes

Select this component for applications requiring integrated three-phase BLDC drive without external gate drivers. Consider the 18V-50V voltage window and thermal limits. Verify interface compatibility with the host controller for parallel or PWM modes. Evaluate package size constraints against the 38-TSSOP form factor.

Part Context

This part belongs to the A3938 series of motor drivers. It is designed for compact integration in motor control systems. The series typically offers high reliability and simplified design implementation for brushless DC motors.

Replacement Considerations

A3938SLDTR-T is listed as a parameter-equivalent replacement for the discontinued A3932SLDTR-T.