MAX5965BUAX+T

Overview

The MAX5965BUAX+T is a high-power, quad, monolithic Power over Ethernet (PoE) Powered Device (PD) controller from Analog Devices / Maxim Integrated. Designed for IEEE 802.3af and 802.3at compliance, it supports up to 45W of power delivery across four channels via standard Category 5 Ethernet cables. The device integrates precise current limiting, thermal protection, and voltage monitoring to ensure reliable operation in PoE applications.

Feature Summary

• Integrates four independent PD controller channels within a single monolithic package
• Ensures full compatibility with IEEE 802.3af and 802.3at PoE standards
• Provides comprehensive protection including thermal shutdown and current limiting

Applications

• IP telephony systems requiring multi-port power distribution
• Wireless LAN access nodes with multiple radio chains
• IP camera networks utilizing centralized power injection

Procurement Notes

Verify the exact suffix against official Analog Devices documentation to confirm temperature range and packaging specifications. Confirm RoHS compliance status through the manufacturer's certification database prior to integration. Ensure the component matches the specific electrical requirements of the target PoE infrastructure design.

Selection Notes

Select this component for designs requiring integrated multi-channel PoE PD control without external discrete logic. It is suitable for space-constrained applications needing high power density. Evaluate thermal management requirements carefully due to the high power handling capabilities of the quad-channel architecture.

Part Context

This part belongs to the MAX5965 family of PoE controllers, which are industry-standard solutions for powering remote devices over Ethernet cabling. The series enables efficient power distribution in network infrastructure equipment, replacing complex discrete implementations with a unified IC solution.

Replacement Considerations

Consult official cross-reference lists for direct replacements. Verify pinout and electrical parameter compatibility before substituting.