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LTC4257

Linear Technology
Part Number LTC4257
Manufacturer Linear Technology
Description IEEE 802.3af PD Power over Ethernet Interface Controller
Published Sep 21, 2009
Detailed Description www.DataSheet4U.com LTC4257 IEEE 802.3af PD Power over Ethernet Interface Controller FEATURES ■ ■ ■ ■ ■ ■ ■ ■ ■ DESCR...
Datasheet PDF File LTC4257 PDF File

LTC4257
LTC4257

Overview
www.
DataSheet4U.
com LTC4257 IEEE 802.
3af PD Power over Ethernet Interface Controller FEATURES ■ ■ ■ ■ ■ ■ ■ ■ ■ DESCRIPTIO Complete Power Interface Port for IEEE 802.
3af® Powered Devices (PDs) Onboard 100V, 400mA Power MOSFET Precision Input Current Limit Onboard 25k Signature Resistor Programmable Classification Current (Class 0-4) Undervoltage Lockout Smart Thermal Protection Power Good Signal Available in 8-Pin SO and Low Profile (3mm × 3mm) DFN Packages The LTC®4257 provides complete signature and power interface functions for a device operating in an IEEE 802.
3af Power over Ethernet (PoE) system.
The LTC4257 simplifies Powered Device (PD) design by incorporating the 25k signature r...


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