A5931GLPTR-T

Overview

The A5931GLPTR-T is a three-phase sensorless fan driver manufactured by Allegro MicroSystems. It integrates control and power stages for brushless DC motor applications. The device operates with a supply voltage range of 5V to 16V and delivers an output current of 3A. It supports PWM, analog, and I2C interfaces. The component functions within a temperature range of -40°C to +105°C and is housed in a 16-TSSOP package with exposed pad.

Feature Summary

• Integrates full control logic and power MOSFETs for three-phase BLDC fan motors
• Supports sensorless sinusoidal commutation for smooth operation
• Provides flexible input via PWM, analog, or I2C interfaces

Applications

• Computer cooling fans
• Server chassis ventilation systems
• Consumer electronics thermal management

Procurement Notes

Verify the specific suffix GLPTR-T against the official datasheet to confirm the TSSOP-16EP package and tape-and-reel quantity. Ensure the design accommodates the specified 5V to 16V supply range and 3A continuous current capability. Confirm that the target application environment remains within the -40°C to +105°C operating temperature limits defined for this variant.

Selection Notes

Select this part when a compact solution for small BLDC fans is required. It is suitable for designs needing integrated gate drive and protection without external components. Consider the 16-pin footprint constraints and the need for adequate thermal dissipation through the exposed pad. Verify interface compatibility with the host controller's PWM or digital signals.

Part Context

This component belongs to the A5931 series of fan drivers from Allegro MicroSystems. It is designed specifically for high-efficiency cooling applications where size and integration are critical. The series typically includes variants with different packages and interface options to suit various board layout requirements and control architectures.

Replacement Considerations

Check for A5931KESTR-1-J for QFN-24 packaging with extended temperature ranges. Evaluate A5931GESTR-T for alternative pinout configurations. Verify electrical equivalence before substituting.