LTC4291-1 Overview
The LTC®4291-1/LTC4292 chipset is a 4-port power sourcing equipment (PSE) controller designed for use in IEEE 802.3bt Type 3 and 4 pliant Power over Ethernet (PoE) systems. The LTC4291-1/LTC4292 is designed to power pliant 802.3af, 802.3at, and 802.3bt PDs. The LTC4291-1/LTC4292 chipset delivers lowest-in-industry heat dissipation by utilizing low RDS(ON) external MOSFETs and 0.15Ω sense resistance per power channel.