LTC4290 Datasheet (Linear Technology) - 8-Port PoE/PoE+/LTPoE++ PSE Controller

LTC4290, 8-Port PoE/PoE+/LTPoE++ PSE Controller

The LTC®4290/LTC4271 chipset is an 8-port power sourcing equipment (PSE) controller designed for use in IEEE 802.3at Type 1 and Type 2 (high power) compliant Power over Ethernet (PoE) systems.

Transformer-isolated communication protocol replaces expensive opto-couplers and complex isolated 3.3V supp

LTC4290 Features

* nn Eight Independent PSE Channels nn Compliant with IEEE 802.3at Type 1 and 2 nn Chipset Provides Electrical Isolation nn Reduced BOM Cost nn Eliminates up to 6 High Speed Opto-Couplers nn Eliminates Isolated 3.3V Power Supply nn Low Power Dissipation nn 0.25Ω Sense Resistance Per Channel nn Very Hi