LTC4264 Datasheet | Linear Technology

.. Features - - - - - - - - - - - LTC4264 High Power PD Interface Controller with 750m A Current Limit DESCRIPTION The LTC®4264 is an integrated Powered Device (PD) interface controller intended for IEEE 802.3af Power over Ethernet (Po E) and high power Po E applications up to 35W. By including a precision dual current limit, the LTC4264 keeps inrush below the IEEE802.3af current limit levels to ensure interoperability success while allowing for high power PD operation. The LTC4264 includes a field-proven power MOSFET delivering up to 750m A to the PD load while maintaining pliance with the IEEE802.3af standard. plementary power good outputs allow the LTC4264 to interface directly with a host of DC/DC converter products. The LTC4264 provides a plete signature and power interface solution for PD designs by incorporating the 25k signature resistor, classification circuitry, input current limit, undervoltage lockout, thermal overload protection, signature disable and power good signaling. The LTC4264 PD interface controller can be used along with a variety of Linear Technology DC/DC converter products to provide a plete, cost effective power solution for high power PD applications. The LTC4264 is available in the space-saving low profile (4mm × 3mm) DFN package. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. plete High Power PD Interface Controller IEEE 802.3af® pliant Onboard 750m A Power MOSFET plementary Power Good Outputs Flexible Auxiliary Power Options Precision Dual Current Limit with Disable Programmable Classification Current to 75m A Onboard 25k Signature Resistor with Disable Undervoltage Lockout plete Thermal Overload Protection Available in Low Profile (4mm × 3mm) DFN Package APPLICATIONS - - - - 802.11n Access Points High Power Vo IP Video Phones RFID Reader Systems PTZ Security Cameras and Surveillance Equipment TYPICAL...