LTC4278 Datasheet, Linear Technology

IEEE 802.3at PD with Synchronous No-Opto Flyback Controller and 12V Aux Support DESCRIPTION n 25.5W IEEE 802.3at Compliant (Type 2) PD n 10V to 57V Auxiliary Power In.

n VoIP Phones with Advanced Display Options n Dual-Radio Wireless Access Points n PTZ Security Cameras n RFID Reader.

n 25.5W IEEE 802.3at Compliant (Type 2) PD n 10V to 57V Auxiliary Power Input n Shutdown Pin for Flexible Auxiliary Power Support n Integrated State-of-the-Art No-Opto Synchronous Flyback Controller
  – Isolated Power Supply Effi.