MAX5986BETE+T

Overview

The MAX5986BETE+T is a single-channel Power over Ethernet (PoE) controller compliant with the IEEE 802.3af standard, designed for use as a Powered Device (PD). It integrates an internal switch and auxiliary functions to manage power delivery efficiently. The device operates within a supply voltage range of 8.7V to 60V and draws a typical supply current of 3.6mA. It supports a maximum power output of 6.49W and functions reliably across an industrial temperature range from -40°C to +85°C. The component is housed in a compact 16-TQFN package measuring 5x5 mm, suitable for surface-mount installation.

Feature Summary

• Complies with IEEE 802.3af PoE standards for powered device applications
• Integrates internal switches to simplify external circuitry requirements
• Includes auxiliary functionality for enhanced system management

Applications

• IEEE 802.3af Powered Device implementations
• Network infrastructure equipment requiring integrated PoE control
• Industrial systems operating in wide temperature environments

Procurement Notes

Verify the specific suffix 'ETE' against the manufacturer's official datasheet to confirm pinout compatibility and thermal pad configuration. Ensure the ordering part number matches the exact tape-and-reel quantity specified in the latest documentation. Cross-reference the manufacturing date code to ensure compliance with current environmental directives such as RoHS. Confirm that the supplier provides valid traceability documents for quality assurance purposes prior to finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring strict adherence to the 802.3af standard with minimal external passive components due to the integrated switch architecture. Consider the 16-TQFN package dimensions for PCB layout constraints in space-sensitive designs. Evaluate the 8.7V to 60V input range against the available bus voltage sources to ensure proper operation under all expected line conditions without exceeding the maximum power dissipation limits.

Part Context

This component belongs to the Maxim Integrated portfolio of power management solutions, now part of Analog Devices Inc. The MAX5986 series focuses on simplifying PoE design by combining control logic with power switching capabilities. It targets applications needing reliable power delivery over Ethernet cabling while maintaining low standby currents and robust performance across varying environmental temperatures.

Replacement Considerations

Consult the manufacturer's official obsolescence notices or product change notifications for verified substitute part numbers. Do not assume functional equivalence with other PoE controllers without verifying pin-to-pin compatibility and electrical parameter alignment through direct datasheet comparison.