MAX5969D Datasheet | Maxim Integrated

19-5926; Rev 0; 6/11 IEEE 802.3af/at-pliant, Powered Device Interface Controller with Integrated Power MOSFET General Description The MAX5969D provides 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 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 180m A before switching to the higher current limit (720m A to 880m A) when the isolation power MOSFET is fully enhanced. The device Features 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 MAX5969D can withstand up to 100V at the input. The MAX5969D supports 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 sourcing equipment (PSE). The device detects the presence of a wall adapter power source connection and allow a smooth switch over from the Po E power source to the wall power adaptor. The MAX5969D also provides a power-good (PG) signal, two-step current limit and foldback, overtemperature protection, and di/dt limit. The MAX5969D is available in a 16-pin, 5mm x 5mm TQFN power package. This device is rated over the -40NC to +85NC extended temperature range. Features S IEEE 802.3af/at pliant S 2-Event Classification or an External Wall Adapter Indicator Output S Simplified Wall Adapter Interface S Po E Classification 0- 5 S 100V Input...