资 源 简 介
The MAX5969D provides a complete interface for apowered device (PD) to comply with the IEEE® 802.3af/at standard in a power-over-Ethernet (PoE) system. TheMAX5969D provides the PD with a detecTIon signature,classificaTIon signature, and an integrated isolaTIonpower switch with inrush current control. During theinrush period, the MAX5969D limits the current to lessthan 180mA before switching to the higher current limit(720mA to 880mA) when the isolaTIon power MOSFETis fully enhanced. The device features an input UVLOwith wide hysteresis and long deglitch time to compensatefor twisted-pair cable resistive drop and to assureglitch-free transition during power-on/-off conditions. TheMAX5969D can withstand up to 100V at the input.
