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The LT4275AHDD#TRPBF is a pin-to-pin compatible family of IEEE 802.3 and LTPoE++ Powered Device (PD) controllers.

The LT4275AHDD#TRPBF uses a proprietary LTPoE++ grading scheme to provide 38.7W, 52.7W, 70W, or 90W of power on the PD RJ45 connector.The LT4275A is fully compliant with IEEE 802.3 standards.

Features

IEEE 802.3af/at and LTPoE++™ Powered Device (PD) Controller

LTPoE++ supports power levels up to 90W.

The LT4275A supports all of the following standards:

LTPoE++ 38.7W, 52.7W, 70W, and 90W

IEEE 802.3at (25.5W) compliant

IEEE 802.3af (up to 13W) compliant

100V absolute maximum input voltage

Wide junction temperature range (-40°C to 125°C)

Thermal protection

Integrated feature resistor

External Hot Swap™ N-channel MOSFETs for low power dissipation and high system efficiency

Programmable auxiliary power support down to 9V

Optional support for non-standard low voltage PoE

Available in 10-pin 3mm x 3mm DFN package

Applications

High-power wireless data systems

Outdoor security camera equipment

Commercial and public information displays

High-temperature industrial applications

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