ADI LTC4257IDD#PBF

Контроллер (PD)12.95 W802.3af (PoE)

Overview

The LTC4257IDD provides complete signature and power interface functions for a device operating in an IEEE 802.3af Power over Ethernet (PoE) system. The LTC4257IDD simplifies Powered Device (PD) design by incorporating the 25k signature resistor, the classification current source, input current limit with thermal foldback, undervoltage lockout and power good signaling, all in a single 8-pin package. By incorporating a high voltage power MOSFET onboard, the LTC4257IDD provides the system designer with reduced cost while also saving board space.

The LTC4257IDD is available in the 8-pin SO and low profile (3mm × 3mm) DFN packages.

Features

Tube package
8 pin count
8 pins

Applications

There are a lot of Linear Technology/Analog Devices LTC4257IDD#PBF Power Over Ethernet (PoE) Controllers applications.

• Lighting

• Security Cameras

• Internet Appliances

• RFID Readers

• Pass-through System

• Higher Power Ethernet Powered Devices

• Midspan Applications

• Routers

• IP Phone Power Management

• Power over Ethernet