A4923GETTR-T

Overview

The A4923GETTR-T is a three-phase sinusoidal motor controller designed for brushless DC (BLDC) applications. It features high-current gate drivers capable of driving all N-channel power MOSFETs in a 3-phase bridge. The device supports PWM current control to minimize vibration, noise, and torque ripple. Key electrical parameters include a supply voltage range of 8V to 40V, an operating temperature range of -40°C to 105°C, and a 32-lead QFN package measuring 5x5x0.9 mm with an exposed thermal pad.

Feature Summary

• Sinusoidal drive current for smooth operation
• Integrated internal circuit protection including over-temperature shutdown and over-current protection
• PWM current limit functionality
• FGO speed output capability

Applications

• Three-phase BLDC motor control
• Fan motor drives
• Pump motor applications

Procurement Notes

Verify the specific suffix ET indicates the 32-lead QFN package with exposed thermal pad as documented. Confirm RoHS compliance status matches the specified revision. Ensure the ordering part number aligns with the tape and reel packaging format required for automated assembly processes.

Selection Notes

Select this component for applications requiring low-noise sinusoidal commutation of three-phase motors. The integrated thermal pad design aids in heat dissipation for compact systems. Consider the 8V to 40V supply range compatibility with system power rails before integration.

Part Context

The A4923 belongs to Allegro MicroSystems' portfolio of motor driver and interface ICs. It is specifically engineered for sensorless or Hall-effect input BLDC control. The GETTR-T designation confirms the surface-mount QFN packaging variant intended for high-volume manufacturing environments.

Replacement Considerations

A4923GETTR-R is a comparable variant within the same family offering identical functional specifications and pinout configuration.