MP3921 Single-Port PSE Power Controller

Monolithic Power Systems (MPS) MP3921 Single-Port Power-Sourcing Equipment (PSE) Power Controller is designed for IEEE 802.3af/at-compliant Power over Ethernet (PoE) applications. The MP3921 includes all the functions of IEEE 802.3af/at, including detection, single-event and two-event classification, current limiting, and disconnected load detection. All functions can be configured to operate in automatic or software configuration mode via I²C.