The LT4295 is an IEEE 802.3af/at/bt-compliant powered device (PD) interface controller with a switching regulator controller. The T2P output indicates the number of classification events received during IEEE 802.3bt-compliant mutual identification and negotiation of available power. The LT4295 supports both forward and flyback power supply topologies. The flyback topology supports No-Opto feedback. Auxiliary input voltages can be accurately sensed with just a resistor divider connected to the AUX pin. The LT4295 utilizes an external, low RDS(on) N-channel hot swap MOSFET and supports the LT4320/LT4321 ideal diode bridges, to extend the end-to-end power delivery efficiency and eliminate costly heat sinks. The LT4295 also includes an on-chip detection signature resistor, thermal protection, slope compensation, and many user configurable settings including classification signature, inrush current, switcher frequency, gate drive delay, soft-start and load compensation. Applications * High Power Wireless Data Systems * Outdoor Security Camera Equipment * Commercial and Public Information Displays * High Temperature Applications * IEEE 802.3af/at/bt Powered Device (PD) with Forward/Flyback Controller * Supports Up to 71.3W PDs * 5-Event Classification Sensing * Superior Surge Protection (100V Absolute Maximum) * Wide Junction Temperature Range (–40°C to 125°C) * >94% End-to-End Efficiency with LT4321 Ideal Bridge https://elecena.pl/product/6215892/ieee-802-3bt-pd-interface-with-forward-flyback-controller 2016-08-11 https://elecena.pl/product/6215892/ieee-802-3bt-pd-interface-with-forward-flyback-controller 2025-01-22