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MQ7800

 Isolated 36~57VDC input,  with 12V passby input, single output, DC-DC Converter compliance with 802.3af 

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The POEMQ78X00 C/D series of modules are designed to extract power from a conventional twisted pair Category 5 Ethernet cable, conforming to the IEEE 802.3af Power-over-Ethernet (PoE) standard. IEEE 802.3af allows for two power options for Category 5 cables and the MQ78X00C/D have two pairs of power inputs pins: - VA1&2 and VB1&2 to accommodate this. The MQ78X00C/D signature and control circuit provides the PoE compatibility signature and power classification required by the Power Sourcing Equipment (PSE) before applying up to 15W power to the port. The MQ78X00C/D is preset to Class 0. The high efficiency DC/DC converter operates over a wide input voltage range and provides a regulated low ripple and low noise output. The DC/DC converter also has built-in overload and short-circuit output protection. 


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