Maxim MAX5971AETI+T

控制器（PSE）40 W802.3at（PoE+），802.3af（PoE）

Overview

The MAX5971AETI+ is a single-port, power-sourcing equipment (PSE) power controller designed for use in IEEE 802.3af/at-compliant PSE. This device provides powered device (PD) discovery, classification, current limit, DC and AC load-disconnect detections. The MAX5971AETI+ operates automatically without the need for any software programming and features an integrated power MOSFET and sense resistor. The device also supports new Class 5 and 2-event classification for detection and classification of high-power PDs. The MAX5971AETI+ provides up to 40W to a single port (Class 5 enabled) and still provides high-capacitance detection for legacy PDs. The MAX5971AETI+ provides input undervoltage lockout (UVLO), input overvoltage lockout, overtemperature detection, output voltage slew-rate limit during startup, and LED status indication. The MAX5971AETI+ is available in a space-saving, 28-pin TQFN (5mm x 5mm) power package, and is rated for the extended (-40°C to +85°C) temperature range.

Features

Tape & Reel (TR) Package
Tape & Reel (TR) package
28 pins

Surface Mount Mounting Type

Applications

There are a lot of Maxim Integrated
MAX5971AETI+T Power Over Ethernet (PoE) Controllers applications.

• Non-Compliant, Application Specific Devices
• Higher Power Ethernet Powered Devices
• IP Phone Power Management
• Wireless Access Points
• Security Cameras
• Power over Ethernet
• PoE powered device appliances
• High power (>12.95 W) powered devices
• IEEE 802.3bt (Draft) Compliant Devices
• Lighting