MAX5972AETE+

Overview

The MAX5972AETE+ is an IEEE 802.3af/at-compliant Powered Device (PD) interface controller manufactured by Analog Devices Inc./Maxim Integrated. It integrates a high-efficiency synchronous buck converter with a power switch rated for up to 25.5 W of output power. The device operates within a supply voltage range of 44 V to 57 V, supporting standard PoE and PoE+ applications. It features a 16-pin TQFN package with an exposed pad for thermal management.

Feature Summary

• Integrates a synchronous buck converter with an internal power switch for compact design
• Complies with IEEE 802.3af and IEEE 802.3at standards for powered devices
• Includes auxiliary sense capability for improved load regulation

Applications

• IEEE 802.3af/at compliant powered devices
• Communication systems requiring integrated power management
• Industrial applications utilizing Power over Ethernet

Procurement Notes

Verify the specific suffix 'ETE+' against the manufacturer's official datasheet to confirm pinout and thermal pad configuration. Confirm RoHS compliance status through current documentation as product lifecycle status may affect availability. Ensure the component matches the required 16-TQFN package dimensions for PCB layout compatibility.

Selection Notes

Select this component when designing PDs requiring integrated switching regulation without external MOSFETs. The internal switch simplifies bill of materials and reduces board space. Verify that the application voltage falls within the 44 V to 57 V input range. Consider the thermal performance of the TQFN package for the expected power dissipation levels in the target environment.

Part Context

This part belongs to the MAX5972 series of PoE controllers from Maxim Integrated, now part of Analog Devices. It serves as a complete solution for powering remote network equipment via Ethernet cables. The series is designed to replace discrete solutions, offering higher efficiency and smaller footprint compared to traditional linear regulators or separate controller-switch combinations.

Replacement Considerations

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