Datasheet Summary
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Freescale Semiconductor Advance Information
Document Number: MC34670 Rev. 3.0, 12/2006
IEEE 802.3af PD With Current Mode Switching Regulator
The 34670 bines a Power Interface Port for IEEE 802.3af Powered Devices (PD) and a high performance current mode switching regulator. It allows a designer to build PDs with a minimum of external ponents by means of integrating the required IEEE 802.3af functions and all functions necessary to build a high efficiency DC/DC converter. On the PD side the 34670 fully supports the IEEE802.3af standard and provides plete signature and power classification functions. It controls inrush current limiting and incorporates...