LTC4266CGW#PBF - 

制造商：

LINEAR TECHNOLOGY LINEAR TECHNOLOGY

制造商产品编号：

LTC4266CGW#PBF

仓库库存编号：

2295356

技术数据表：

(EN)

The LTC4266CGW#PBF 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 heat-sinks 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.

• Four independent PSE channels
• Compliant with IEEE 802.3 at type 1 and 2
• 0.34R Total channel resistance
• 8-bit Programmable current limit (ILIM)
• 7-bit Programmable overload currents (ICUT)
• Fast shutdown of preselected ports
• 14.5-bit Port current/voltage monitoring
• 2-Event classification
• Very high reliability
• 4-point PD detection

• 2-point Forced voltage
• 2-point Forced current
• High capacitance legacy device detection
• Midspan backoff timer
• Supports proprietary power levels above 25W