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MAX5969D - Powered Device Interface Controller

Description

The MAX5969D provides a complete interface for a powered device (PD) to comply with the IEEE® 802.3af/ at standard in a power-over-Ethernet (PoE) system.

Features

  • an input UVLO with wide hysteresis and long deglitch time to compensate for twisted-pair cable resistive drop and to assure glitch-free transition during power-on/-off conditions. The MAX5969D can withstand up to 100V at the input. The MAX5969D supports a 2-event classification method as specified in the IEEE 802.3at standard and provide a signal to indicate when probed by a Type 2 power sourcing equipment (PSE). The device detects the presence of a wall adapter power source connection and allow.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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MAX5969D 19-5926; Rev 0; 6/11 IEEE 802.3af/at-Compliant, Powered Device Interface Controller with Integrated Power MOSFET General Description The MAX5969D provides a complete interface for a powered device (PD) to comply with the IEEE® 802.3af/ at standard in a power-over-Ethernet (PoE) system. The MAX5969D provides the PD with a detection signature, classification signature, and an integrated isolation power switch with inrush current control. During the inrush period, the MAX5969D limits the current to less than 180mA before switching to the higher current limit (720mA to 880mA) when the isolation power MOSFET is fully enhanced.
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