LTC4291 Datasheet | Analog Devices

FEATURES nn Four PSE Ports nn Two Power Channels Per Port nn Fully pliant IEEE 802.3bt Type 3 and 4 PSE nn pliant Support for Type 1, 2, 3, and 4 PDs nn Low Power Path Dissipation per Channel nn 150mΩ Sense Resistance nn 30mΩ or Lower MOSFET RDS(ON) nn Chipset Provides Electrical Isolation nn Eliminates Optos and Isolated 3.3V Supply nn Very High Reliability Multipoint PD Detection nn Connection Check Distinguishes Single Signature and Dual-Signature PDs nn Continuous, Dedicated Per-Port Power and Current Monitoring nn Per-Port Power Policing nn 1MHz I2C patible Serial Control Interface nn Pin or I2C Programmable PD Power Up to 71.3W nn Available in a 40-Lead 6mm × 6mm (LTC4292) and 24-Lead 4mm × 4mm (LTC4291) QFN Package APPLICATIONS nn Po E PSE Switches/Routers nn Po E PSE Midspans LTC4292/LTC4291 4-Port IEEE 802.3bt Po E PSE Controller DESCRIPTION The LTC®4292/LTC4291 chipset is a 4-port power sourcing equipment (PSE) controller designed for use in IEEE 802.3bt Type 3...