Analog Devices Inc.

LTPoE++/PoE+/PoE PD Forward/Flyback Controller Features: IEEE802.3af/at and LTPoE++™ 90W Powered Device (PD) with Forward/Flyback Controller LT4276A Supports All of the Following Standards: LTPoE++ 38.7W, 52.7W, 70W and 90W IEEE 802.3at 25.5W Compliant IEEE 802.3af up to 13W Compliant LT4276B is IEEE 802.3at/af Compliant LT4276C is IEEE 802.3af Compliant Superior Surge Protection (100V Absolute Maximum) Wide Junction Temperature Range (–40°C to 125°C) Auxiliary Power Support as Low as 9V No Opto-Isolator Required for Flyback Operation External Hot Swap™ N-Channel MOSFET for Lowest Power Dissipation and Highest System Efficiency >94% End-to-End Efficiency with LT4321 Ideal Bridge Available in a 28-Lead 4mm × 5mm QFN Package

$8.91