LTC4266IUHF#TRPBF

LTC®4266 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. Application includes high power PSE switches/routers, high power PSE midspans.

• Four independent PSE channels
• High capacitance legacy device detection
• Midspan backoff timer
• Supports proprietary power levels above 25W
• Main PoE supply voltage range from 45 to 57V (for IEEE type 1 compliant output, TA = 25°C)
• Classification voltage range from 16 to 20.5V (AGND – VOUTn, 0mA ≤ ICLASS ≤ 50mA, TA = 25°C)
• 38-lead plastic QFN package
• Temperature rating range from -40°C to 85°C

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party