Part NO. Brand
Quad PSE controller addresses PoE standard

The LTC4266 is a four-port PoE controller for power sourcing equipment (PSE) required to provide IEEE 802.3at (25.5 W) or proprietary higher power levels. Providing up to 100 W over four-pair Ethernet cabling, the controller is compliant with the new IEEE 802.3at PoE+ standard and backward compatible with the prior IEEE 802.3af standard. To help conserve power, the controller delivers the industry’s lowest heat dissipation by using low RDS(on) MOSFETs and 0.25-Ω sense resistors, eliminating the need for heat sinks.

The POE controller is suitable for a wide variety of PSE applications, including next-generation switches, routers, hubs, and midspans. It uses a proprietary dual-mode four-point detection mechanism that ensures immunity from false PD detection. Power management functions include prioritized fast shutdown, 14.5-bit-per-port voltage and current readback, 8-bit programmable current limits, and 7–bit programmable overload current limits. A 1-MHz I2C interface allows a host controller to digitally configure the IC or query port readings. ($6.95 ea/1,000 — available now.)

Learn more about Linear Technology Corp.
Home | About Us | Business | News | Products | Stock Search | Human Resource | Feedback | Contact | Chinese
Copyright © 2009 Mega Semiconductor Co.,Ltd Tel: +852-5314 3920 Fax: +852-3077 5591 | ICP:09143536