dc1145b DC1145B LTC4267CDHC | PoE Powered Device with 12V Isolated Auxiliary, VOUT = 12V @ 0.9A Demonstration circuit 1145B, featuring the LTC4267, provides a complete IEEE 802.3af Powered Device (PD) interface and isolated 12V at 0.9A power supply solution for use in Power over Ethernet (PoE) applications. An optional connection is included for a 12V auxiliary supply on the secondary side that disables PoE when present. DC1145B