MAX5982B
Description
The MAX5982A/MAX5982B/MAX5982C provide a plete interface for a powered device (PD) to ply with the IEEE® 802.3af/at standard in a power-over-Ethernet (Po E) system. The MAX5982A/MAX5982B/MAX5982C provide the PD with a detection signature, classification signature, and an integrated isolation power switch with inrush current control. During the inrush period, the MAX5982A/MAX5982B/MAX5982C limit the current to less than 182m A before switching to the higher current limit (1700m A to 2100m A) when the isolation power MOSFET is fully enhanced. The devices feature an input UVLO with wide hysteresis and long deglitch time to pensate for twisted-pair cable resistive drop and to assure glitch-free transition during power-on/-off conditions. The MAX5982A/MAX5982B/MAX5982C can withstand up to 100V at the input.
The MAX5982A/MAX5982B/MAX5982C support a 2-Event classification method as specified in the IEEE 802.3at standard and provide a signal to indicate when probed by a Type 2 power...
