Design Files
Receive the full breakdown. See the product footprint and more in the eCad file.
- No Longer Manufactured
- MC34670
MCZ34670 IEEE 802.3af Powered Devices
- This page contains information on a product that is no longer manufactured (discontinued). Specifications and information herein are available for historical reference only.
The NXP® MC34670 combines a power interface port for IEEE 802.3af powered devices and a high performance current mode switching regulator. It allows you to build PDs with a minimum of external components by integrating the required IEEE 802.3af functions with all functions necessary to build a high efficiency DC/DC converter.
- Fully supports the IEEE802.3af standard and provides complete signature and power classification functions
- Controls inrush current limiting and incorporates adjustable undervoltage lockout
- The switching regulator provides excellent line and load regulation and drives an external power MOSFET with sense resistor
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Documentation
Quick reference to our documentation types.
3 documents
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Data Sheet
MC34670, IEEE 802.3af PD with Current Mode Switching RegulatorFeatured
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Application Note
AN3279, MC34670 Usage and ConfigurationFeatured
