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LTC4291-1 Datasheet 4-port Ieee 802.3bt Poe Pse Controller

Manufacturer: Analog Devices

General Description

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 compliant Power over Ethernet (PoE) systems.

The LTC4291-1/LTC4292 is designed to power compliant 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.

Key Features

  • nn Four PSE Ports nn Two Power Channels per Port nn Fully Compliant IEEE 802.3bt Type 3 and 4 PSE nn Compliant 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 SingleSignature and Dual-Signature PDs nn Continuous, Dedicated Per-Port Power and C.

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