MAX5941AESE+T

Overview

The MAX5941AESE+T is a Power-over-Ethernet (PoE) interface and PWM controller compliant with the IEEE 802.3af standard, designed for Powered Devices (PDs). It operates within a supply voltage range of 18V to 67V and draws a typical supply current of 400µA. The device supports a maximum power output of 12.95W and functions reliably across an operating temperature range of -40°C to +85°C. Packaged in a 16-lead SOIC, it integrates essential control logic for PoE applications without internal switches.

Feature Summary

• IEEE 802.3af-compliant interface and control logic for Powered Devices
• Integrated PWM controller for external power stage management
• Wide input voltage capability supporting standard PoE classifications

Applications

• Power-over-Ethernet Powered Device implementations
• Network infrastructure equipment requiring DC power distribution
• Telecommunications hot-swap reference designs

Procurement Notes

Verify component authenticity through authorized channels due to discontinuation status. Confirm package integrity and pin alignment against the 16-SOIC specification. Review the manufacturer's Product Change Notification for any historical revisions affecting form or function before finalizing procurement plans.

Selection Notes

Select this component for designs strictly adhering to the IEEE 802.3af standard. Ensure the external circuitry supports the specified 18V to 67V input range. Verify that the thermal design accommodates the 12.95W maximum power dissipation within the required temperature envelope.

Part Context

This part belongs to the MAX5941 family of PoE controllers manufactured by Analog Devices / Maxim Integrated. It serves as a dedicated interface solution for managing power delivery over Ethernet cables, distinct from general-purpose power management ICs.

Replacement Considerations

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