DC1815A-D

LINEAR TECHNOLOGY DC1815A-D Demonstration Board, Power Over Ethernet POE, PSE Controller, I2C Compatible Serial Interface

The demonstration circuit 1815A-D features the LTC®4266A quad power sourcing equipment controller, capable of delivering up to 90W of LTPoE++™ power to a compatible LTPoE++ powered device. Advanced power management features of the LTC4266A include a 14-bit current monitoring ADC, DAC-programmable current limit, and versatile quick port shutdown. The LTC4266A includes an I²C serial interface operable up to 1MHz. The LTC4266A is configurable on the as an AUTO pin high, MID pin high, autonomous midspan power injector; input data from an existing network system is sent out, along with power, to a powered device.

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Four independent PSE channels

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Compliant with IEEE 802.3at Type 1 and 2

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Low power dissipation

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0.25R sense resistance per channel

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Very high reliability 4-Point powered device detection

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High capacitance legacy device detection

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1MHz I²C compatible serial control interface

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Midspan backoff timer