Part Number
|
LTC4257-1 |
Manufacturer
|
Linear Technology |
Description
|
Power over Ethernet Interface Controller |
Published
|
Mar 27, 2005 |
Detailed Description
|
U U
LTC4257-1
IEEE 802.3af PD Power over Ethernet Interface Controller with Dual Current Limit
FEATURES
■ Complete Pow...
|
Datasheet
|
LTC4257-1
|
Overview
U U
LTC4257-1
IEEE 802.
3af PD Power over Ethernet Interface Controller with Dual Current Limit
FEATURES
■ Complete Power Interface Port for IEEE 802®.
3af Powered Devices (PDs)
■ Onboard 100V, 400mA Power MOSFET ■ Precision Dual Level Current Limit ■ Onboard 25k Signature Resistor with Disable ■ Programmable Classification Current (Class 0-4) ■ Undervoltage Lockout ■ Thermal Overload Protection ■ Power Good Signal ■ Available in 8-Pin SO and Low Profile (3mm × 3mm)
DFN Packages
U APPLICATIO S
■ IP Phone Power Management ■ Wireless Access Points ■ Telecom Power Control
DESCRIPTIO
The LTC®4257-1 provides complete signature and power interface functions for a device operating in an IEEE 802.
3...
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