Descriptions of LTC4266IUHF#TRPBF provided by its other distributors.
LTC4266 - Quad IEEE 802.3at Power Over Ethernet Controller
Ms-Hot Swap/Poe Poe+ 25.5W Quad Pse Controller
IC POE CNTRL 4 CHANNEL 38QFN
Component Distributors Inc.
PoE+ 25.5W Quad PSE Controller
POWER MANAGEMENT IC
The LTC4266 is a quad PSE controller designed for use in IEEE 802.3 Type 1 and Type 2 (high power) compliant Power over Ethernet systems. External power MOSFETs enhance system reliability and minimize channel resistance, cutting power dissipation and eliminating the need for heatsinks even at Type 2 power levels. External power components also allow use at very high power levels while remaining otherwise compatible with the IEEE standard. 80V-rated port pins provide robust protection against external faults. The LTC4266 includes advanced power management features, including current and voltage readback and programmable ICUT and ILIM thresholds. Available C libraries simplify power-management software development; an optional AUTO pin mode provides fully IEEE-compliant standalone operation with no software required. Proprietary 4-point PD detection circuitry minimizes false PD detection while supporting legacy phone operation. Midspan operation is supported with built-in 2-event classification and backoff timing. Host communication is via a 1MHz I2C serial interface. The LTC4266 is available in a 5mm × 7mm QFN package that significantly reduces board space compared with competing solutions. A legacy-compatible 36-pin SSOP package is also available. Applications High Power PSE Switches/Routers High Power PSE Midspans