A3932SEQTR

Overview

The A3932SEQTR is a three-phase brushless DC motor driver manufactured by Allegro MicroSystems. It integrates power MOSFETs and control logic for BLDC applications. The device operates on a supply voltage range of 18V to 50V and supports parallel and PWM interfaces. It features an integrated controller for commutation and direction management with three half-bridge pre-drivers. The component is housed in a 32-PLCC package (11.43x13.97mm) designed for surface mount installation. It functions within an ambient temperature range of -20°C to 85°C.

Feature Summary

• Integrates power MOSFETs with dedicated control logic for three-phase BLDC motor commutation
• Provides internal direction management and commutation sequencing capabilities
• Supports both parallel digital input and pulse-width modulation interface modes

Applications

• Three-phase brushless DC motor control systems
• Industrial automation equipment requiring integrated motor drivers
• General-purpose motor drive applications

Procurement Notes

Verify the specific suffix against current manufacturer documentation, as the base A3932 series includes variants with differing compliance statuses. Confirm RoHS status requirements prior to ordering, as historical data indicates variations between non-compliant and compliant versions within the same family. Check component availability status, as this specific part number may be discontinued or subject to last-time buy conditions.

Selection Notes

Select this component when designing systems requiring a single-chip solution for three-phase BLDC motors operating between 18V and 50V. Ensure the application environment remains within the specified -20°C to 85°C ambient temperature range. Verify that the system architecture can accommodate the 32-PLCC package dimensions and that the chosen interface mode (parallel or PWM) aligns with the host controller's output capabilities.

Part Context

This part belongs to the A3932 family of three-phase BLDC motor drivers from Allegro MicroSystems. The family shares core functional architectures but differs in packaging options such as PLCC, QSOP, and TSSOP, as well as thermal ratings and compliance certifications. The SEQTR designation specifically identifies the 32-PLCC tape-and-reel variant intended for automated surface-mount assembly processes.

Replacement Considerations

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