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MAX5972A - IEEE 802.3af/at-Compliant Powered Device Interface Controller

Datasheet Summary

Description

The MAX5972A provides a complete interface for a powered device (PD) to comply with the IEEE® 802.3af/ at standard in a power-over-Ethernet (PoE) system.

Features

  • an input UVLO with wide hysteresis and long deglitch time to compensate for twisted-pair cable resistive drop and to assure glitch-free transition during power-on/-off conditions. The MAX5972A can withstand up to 100V at the input. The MAX5972A supports a 2-event classification method as specified in the IEEE 802.3at standard and provides a signal to indicate when probed by Type 2 power-sourcing equipment (PSE). The device detects the presence of a wall adapter power-source connection and allows.

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Datasheet Details

Part number MAX5972A
Manufacturer Maxim Integrated Products
File Size 1.36 MB
Description IEEE 802.3af/at-Compliant Powered Device Interface Controller
Datasheet download datasheet MAX5972A Datasheet
Additional preview pages of the MAX5972A datasheet.

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Full PDF Text Transcription

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19-4924; Rev 1; 2/10 TION KIT EVALUA BLE A IL A V A www.DataSheet4U.com IEEE 802.3af/at-Compliant, Powered Device Interface Controller with Integrated Power MOSFET General Description The MAX5972A provides a complete interface for a powered device (PD) to comply with the IEEE® 802.3af/ at standard in a power-over-Ethernet (PoE) system. The MAX5972A provides the PD with a detection signature, classification signature, and an integrated isolation power switch with inrush current control. During the inrush period, the MAX5972A limits the current to less than 180mA before switching to the higher current limit (720mA to 880mA) when the isolation power MOSFET is fully enhanced.
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