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Analog Devices AX5996 IEEE® 802.3bt-Compliant Powered Device complies with the IEEE 802.3af/at/bt standard in a Power-Over-Ethernet (PoE) system with a detection signature, classification signature, and an integrated power switch with startup inrush current control. The MAX5996 limits the current to 135mA during the startup period, and it switches to a higher current limit when the power MOSFET is fully enhanced. The devices feature a Multi-Event classification, Intelligent MPS, Autoclass, and an input UVLO with wide hysteresis and deglitch time to assure glitch-free transition during power-on/off. The MAX5996 withstands a maximum voltage of 100V at the input.
Analog Devices MAX5996 IEEE 802.3bt-Compliant Powered Device detects the presence of a wall adapter power and allows a smooth switch-over from the PoE power source to the wall adapter. Additionally, the devices provide a power-good (PG) signal, two-step current limit, foldback control, and overtemperature protection.
The MAX5996 is housed in a 16-pin, 5mm x 5mm, TQFN power package and rated over a -40°C to 125°C temperature range.
