A3938SLQTR

Overview

The A3938SLQTR is a three-phase brushless DC motor driver manufactured by Allegro MicroSystems. It integrates power MOSFETs and operates within a supply voltage range of 18V to 50V. The device utilizes a 36-lead QSOP package for surface mount installation. Designed for commutation and direction management, it supports parallel and PWM interfaces. The component functions as a pre-driver with three half-bridge outputs. It is rated for an operating temperature range from -20°C to 85°C.

Feature Summary

• Integrates power MOSFET technology for efficient motor control
• Provides dedicated commutation and direction management capabilities
• Features three half-bridge output configurations

Applications

• Three-phase brushless DC motor control systems
• General purpose industrial motor applications

Procurement Notes

Verify the specific package variant against official datasheets, as the suffix indicates a 36-lead QSOP configuration. Confirm current production status, as this part number may be discontinued or subject to change. Ensure compatibility with required voltage ranges and interface protocols before integration into final designs.

Selection Notes

Select this component for applications requiring integrated three-phase BLDC control with high voltage tolerance up to 50V. Consider the 36-lead QSOP package constraints for PCB layout. Verify thermal performance requirements against the specified operating temperature range and power dissipation characteristics.

Part Context

This part belongs to the A3938 series of motor drivers from Allegro MicroSystems. The series focuses on integrated solutions for brushless DC motors. Variants in this family share core functional architectures but differ in packaging options such as PLCC, TSSOP, and QSOP to suit different board space and manufacturing needs.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.