MAX5986BETE+

Overview

The MAX5986BETE+ is a Power-over-Ethernet (PoE) Powered Device controller compliant with IEEE 802.3af standards, manufactured by Analog Devices Inc./Maxim Integrated. It integrates a PD interface and an efficient step-down DC-DC converter within a 16-TQFN package. The device supports input voltages from 8.7V to 60V, delivering up to 6.49W of power. Key electrical parameters include a maximum inrush current limit of 60mA and an operating current limit of 323mA. It operates across a temperature range of -40°C to +85°C.

Feature Summary

• Integrates a complete PoE solution combining the PD interface with a high-efficiency step-down DC-DC converter for reduced external component count.
• Features a peak current-mode control scheme for fast transient response and easy implementation.
• Provides built-in protection mechanisms including isolation power MOSFETs and defined current limits for inrush and operation.

Applications

• IEEE 802.3af-compliant Class 1/Class 2 Powered Devices
• Power-over-Ethernet network infrastructure equipment
• Low external part count PoE system designs

Procurement Notes

Verify the specific suffix 'B' against the manufacturer's official documentation to confirm exact pinout, thermal characteristics, or functional variations compared to other variants in the MAX5986 family. Ensure compatibility with your target IEEE 802.3af application requirements before finalizing procurement decisions.

Selection Notes

Select this component when designing systems requiring integrated PoE detection, classification, and voltage regulation. It is suitable for applications needing a compact footprint with minimal external components. Consider the 60V input range and 6.49W power capability relative to load requirements.

Part Context

This component belongs to the MAX5986A–MAX5986C series, which provides comprehensive power-supply solutions for PoE systems. These devices are designed to offer low external part counts by integrating the PD interface directly with the DC-DC converter, streamlining the design process for networked powered devices.

Replacement Considerations

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