ADI LTC4274CUHF#PBF

控制器（PSE）25.5 W802.3at（PoE+），802.3af（PoE）

Overview

The LTC4274CUHF is a single power sourcing equipment controller designed for use in IEEE 802.3 Type 1 and Type 2 (high power) compliant Power over Ethernet systems. External power MOSFETs enhance system reliability and minimize channel resistance, cutting power dissipation and eliminating the need for heatsinks even at Type 2 power levels. External power components also allow use at very high power levels while remaining otherwise compatible with the IEEE standard. 80V-rated port pins provide robust protection against external faults.

The LTC4274CUHF is available in a 5mm × 7mm QFN package that significantly reduces board space compared with competing solutions.

Features

Tube Package
Tube package
38 pin count

Surface Mount Mounting Type

Applications

There are a lot of Linear Technology/Analog Devices
LTC4274CUHF#PBF Power Over Ethernet (PoE) Controllers applications.

• Non-Compliant, Application Specific Devices
• Higher Power Ethernet Powered Devices
• IP Phone Power Management
• Wireless Access Points
• Security Cameras
• Power over Ethernet
• PoE powered device appliances
• High power (>12.95 W) powered devices
• IEEE 802.3bt (Draft) Compliant Devices
• Lighting