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MAX5969D
19-5926; Rev 0; 6/11
IEEE 802.3af/at-Compliant, Powered Device Interface Controller with Integrated Power MOSFET
General Description
The MAX5969D 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 MAX5969D provides the PD with a detection signature, classification signature, and an integrated isolation power switch with inrush current control. During the inrush period, the MAX5969D 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.