LTC4268-1 Datasheet - Linear Technology

LTC4268-1 High Power PD

The LTC®4268-1 is an integrated Powered Device (PD) controller and switching regulator intended for IEEE 802.3af and high power PoE applications up to 35W. By including a precision dual current limit, the LTC4268-1 keeps inrush below IEEE 802.3af current limit levels to ensure interoperability succe.

LTC4268-1 Features

* n Robust 35W PD Front End n IEEE 802.3af Compliant n Rugged 750mA Power MOSFET With Precision Dual Level Current Limit n High Performance Synchronous Flyback Controller n IEEE Isolation Obtained Without an Opto-Isolator n Adjustable Frequency from 50kHz to 250kHz n Tight Multi-Output Regulation With

LTC4268-1_LinearTechnology.pdf