MAX5986AETE+

符合IEEE 802.3af标准，高效率， 1级，具有集成DC -DC转换器供电设备 IEEE 802.3af-Compliant, High-Efficiency, Class 1,Powered Devices with Integrated DC-DC Converter

The from Products is an IEEE 802.3af-compliant, high-efficiency, Class 1/Class 2, PDs with integrated DC to DC converter in 16 pin TQFN package. It provides a complete power-supply solution as IEEE® 802.3af-compliant Class 1/Class 2 powered devices in a Power over Ethernet system. The device integrates the PD interface with an efficient DC to DC converter, offering a low external part count PD solution. The MAX5986A include sleep and ultra-low power modes. The PD interface provides a detection signature and a Class 1/Class 2 classification signature with a single external resistor. The PD interface also provides an isolation power MOSFET, a 60mA max inrush current limit and a 323mA operating current limit. The integrated step down DC-DC converter uses a peak current-mode control scheme and provides an easy-to implement architecture with a fast transient response. It operates at a fixed 215KHz switching frequency.

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Wide input voltage range from 8.7V to 60V

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Protects against overload, output short circuit, output overvoltage and overtemperature

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Integrated TVS diode withstands cable discharge event CDE

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PoE class 1/class 2 classification set with single resistor

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Intelligent maintain power signature MPS complies with IEEE 802.3af specification

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Simplified wall adapter interface

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Pass 2KV, 200m CAT-6 cable discharge event

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Sleep and ultra low power mode

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Frequency foldback for high-efficiency light-load operation, Back-bias to optimize efficiency

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Hiccup-mode runaway current limit, 49mA typ inrush current limit