APPLICATION NOTE 3363

New Ethernet Systems Distribute DC Power with Data


Abstract: Power-over-Ethernet (PoE) is a power-distribution technique recently approved as IEEE standard 802.3af. It allows that ubiquitous and universal network called the Ethernet to carry DC power along with your data packets. The recent ratification of this IEEE standard appears to be the first instance in which a universal power jack or plug has been defined for worldwide use. It means that local AC power is no longer needed for all network-attached devices that need continuous power—such as IP phones, wireless access nodes, and web surveillance cameras. It also means that the devices do not have to be placed near wall outlets, and means that power cables can be eliminated.

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Related Parts
DS33Z11 Ethernet Mapper  
DS33Z41 Quad IMUX Ethernet Mapper  
DS33Z44 Quad Ethernet Mapper  
DS80C400 Network Microcontroller  
MAX5003 High-Voltage PWM Power-Supply Controller Samples  
MAX5014 Current-Mode PWM Controllers with Integrated Startup Circuit for Isolated Power Supplies Samples  
MAX5015 Current-Mode PWM Controllers with Integrated Startup Circuit for Isolated Power Supplies Samples  
MAX5052 Current-Mode PWM Controllers with an Error Amplifier for Isolated/Nonisolated Power Supplies Samples  
MAX5053 Current-Mode PWM Controllers with an Error Amplifier for Isolated/Nonisolated Power Supplies Samples  
MAX5913 +48V Quad Hot-Swap Controllers For Power-Over-LAN  
MAX5914 +48V Quad Hot-Swap Controllers For Power-Over-LAN  
MAX5917 +65V Simple Swapper Hot-Swap Switches Samples  
MAX5922 +48V, Single-Port Network Power Switch For Power-Over-LAN Samples  
MAX5935 Quad Network Power Controller for Power-Over-LAN  


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© Oct 26, 2004, Maxim Integrated Products, Inc.
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APP 3363: Oct 26, 2004
APPLICATION NOTE 3363, AN3363, AN 3363, APP3363, Appnote3363, Appnote 3363