MAX5969B Datasheet | Maxim Integrated

19-5008; Rev 0; 12/09 TION KIT EVALUA BLE AVAILA IEEE 802.3af/at-pliant, Powered Device Interface Controllers with Integrated Power MOSFET General Description The MAX5969A/MAX5969B 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 MAX5969A/MAX5969B provide the PD with a detection signature, classification signature, and an integrated isolation power switch with inrush current control. During the inrush period, the MAX5969A/MAX5969B limit the current to less than 180m A before switching to the higher current limit (720m A to 880m 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 MAX5969A/MAX5969B can withstand up to 100V at the input. The MAX5969A/MAX5969B support a 2-event classification method as specified in the IEEE 802.3at standard and provide a signal to indicate when probed by Type 2 power-sourcing equipment (PSE). The devices detect the presence of a wall adapter power-source connection and allow a smooth switchover from the Po E power source to the wall power adapter. The MAX5969A/MAX5969B also provide a power-good (PG) signal, two-step current limit and foldback, overtemperature protection, and di/dt limit. The MAX5969A/MAX5969B are available in a space-saving, 10-pin, 3mm x 3mm, TDFN power package. These .. devices are rated over the -40NC to +85NC extended temperature range. Features S IEEE 802.3af/at pliant S 2-Event Classification S Simplified Wall Adapter Interface S Po E Classification 0 to 5 S 100V Input...