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MAX5981B

Part Number	MAX5981B
Manufacturer	Maxim Integrated
Description	Powered Device Interface Controllers
Published	Mar 27, 2020
Detailed Description	MAX5981A/MAX5981B 19-5732; Rev 2; 8/11 IEEE 802.3af/at-Compliant, Powered Device Interface Controllers with Integrated...
Datasheet	MAX5981B PDF File

Overview

MAX5981A/MAX5981B 19-5732; Rev 2; 8/11 IEEE 802.
3af/at-Compliant, Powered Device Interface Controllers with Integrated Power MOSFET General Description The MAX5981 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 MAX5981 provides the PD with a detection signature, classification signature, and an integrated isolation power switch with inrush current control.
During the inrush period, the MAX5981 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.
The device features an input UVLO with wide hyste...

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