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MAX5969A - Powered Device Interface Controllers

General Description

The MAX5969A/MAX5969B provide a complete interface for a powered device (PD) to comply with the IEEE® 802.3af/at standard in a power-over-Ethernet (PoE) system.

Key Features

  • S IEEE 802.3af/at Compliant S 2-Event Classification S Simplified Wall Adapter Interface S PoE Classification 0 to 5 S 100V Input Absolute Maximum Rating S Inrush Current Limit of 180mA Maximum S Current Limit During Normal Operation Between 720mA and 880mA S Current Limit and Foldback S Legacy UVLO at 36V (MAX5969A) S IEEE 802.3af/at-Compliant, 40V UVLO (MAX5969B) S Overtemperature Protection S Thermally Enhanced, 3mm x 3mm, 10-Pin TDFN MAX5969A/MAX5969B Ordering Information PART.

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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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19-5008; Rev 0; 12/09 TION KIT EVALUA BLE AVAILA IEEE 802.3af/at-Compliant, Powered Device Interface Controllers with Integrated Power MOSFET General Description The MAX5969A/MAX5969B provide 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 MAX5969A/MAX5969B provide the PD with a detection signature, classification signature, and an integrated isolation power switch with inrush current control. During the inrush period, the MAX5969A/MAX5969B limit the current to less than 180mA before switching to the higher current limit (720mA to 880mA) when the isolation power MOSFET is fully enhanced.