MAX5991B Datasheet (MAX5991A/B) IEEE 802.3af-Compliant / High-Efficiency / Class 1 / Class 2 / Powered Devices

Manufacturer: Maxim Integrated (now Analog Devices)

Overview: EVALUATION KIT AVAILABLE MAX5991A /MAX5991B IEEE 802.3af-Compliant, High-Efficiency, Class 1/Class 2, Powered Devices with Integrated DC-DC.

Download the MAX5991B datasheet PDF. This datasheet also includes the MAX5991A variant, as both parts are published together in a single manufacturer document.

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MAX5991B (max5991a/b) ieee 802.3af-compliant / high-efficiency / class 1 / class 2 / powered devices by Maxim Integrated (now Analog Devices) - Datasheet Preview

Datasheet Details

Part number	MAX5991B
Manufacturer	Maxim Integrated (now Analog Devices)
File Size	828.76 KB
Description	(MAX5991A/B) IEEE 802.3af-Compliant / High-Efficiency / Class 1 / Class 2 / Powered Devices
Download	MAX5991B Download (PDF)

General Description

The MAX5991A/MAX5991B provide a complete powersupply solution as IEEE® 802.3af-compliant Class 1/ Class 2 Powered Devices (PDs) in a Power-over-Ethernet (PoE) system.

The devices integrate the PD interface with an efficient DC-DC converter, offering a low external part count PD solution.

The devices also include a low-dropout regulator, MPS, sleep, and ultra-low power modes.

Key Features

S IEEE 802.3af Compliant S PoE Class 1/Class 2 Classification S Intelligent Maintain Power Signature (MPS) S Sleep and Ultra-Low Power Mode S Simplified Wall Adapter Interface S Efficient, Integrated DC-DC Converter (with Integrated Switches) S 8.7V to 60V Wide Input Voltage Range S 3.2V to 14V Programmable Output Voltage Range S Internal Compensation S Fixed 430kHz Switching Frequency S Frequency Foldback for High-Efficiency LightLoad Operation S Built-In Output-Voltage Monitoring S.

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More Datasheets from Maxim Integrated (now Analog Devices)

Part Number	Description
MAX5991A	(MAX5991A/B) IEEE 802.3af-Compliant / High-Efficiency / Class 1 / Class 2 / Powered Devices
MAX5900	-100V SOT23 Simple Swapper Hot-Swap Controllers
MAX5902	+72V SOT23 Simple Swapper Hot-Swap Controllers
MAX5903	+72V SOT23 Simple Swapper Hot-Swap Controllers
MAX5904	Low-Voltage / Dual Hot-Swap Controllers/Power Sequencers
MAX5910	+65V Simple Swapper Hot-Swap Switches
MAX5911	-48V Simple Swapper Hot-Swap Switches
MAX5913	+48V Quad Hot-Swap Controllers
MAX5915	Dual PCI 2.2 Hot-Swap Controllers
MAX5918	Low-Voltage / Dual Hot-Swap Controllers