LTC4279 Datasheet | Analog Devices

LTC4279 Single Port PoE/PoE+/ LTPoE++ PSE Controller Features nn pliant with IEEE 802.3at Type 1 and 2 nn Supports LTPoE++® Up to 90W nn Supports Dual-Signature PDs nn Fully Autonomous Operation without Microcontroller nn Very Low Power Dissipation - 0.1Ω Sense Resistance - Low RDS(ON) External MOSFET nn Very High Reliability 4-Point PD Detection - 2-Point Forced Voltage and Forced Current nn Robust Short-Circuit Protection nn Cable Surge Protected ±80V OUT Pin nn Classification Dependent ICUT and ILIM Current Thresholds nn Supports 2-Pair and 4-Pair Output Power nn UltraPWR Mode Supports Custom PDs Up to 123W nn Pin-Selectable Detection Backoff Timer for Midspans nn Pin...