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MAX5953B - IEEE 802.3af PD Interface and PWM Controllers

This page provides the datasheet information for the MAX5953B, a member of the MAX5953A IEEE 802.3af PD Interface and PWM Controllers family.

Description

The MAX5953A/MAX5953B/MAX5953C/MAX5953D integrate a complete power IC solution for Powered Devices (PD) in a Power-Over-Ethernet (PoE) system, in compliance with the IEEE 802.3af standard.

Features

  • include UVLO, over-temperature shutdown, and shortcircuit protection with hiccup current limit for enhanced performance and reliability. Operation up to 500kHz allows for smaller external magnetics and capacitors. The MAX5953A/MAX5953B/MAX5953C/MAX5953D are available in a high-power (2.22W), 7mm x 7mm thermally enhanced thin QFN package. Features.
  • Powered Device Interface Fully Integrated IEEE 802.3af-Compliant PD Interface PD Detection and Programmable Classification Signatures Less t.

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Datasheet Details

Part number MAX5953B
Manufacturer Maxim Integrated Products
File Size 484.70 KB
Description IEEE 802.3af PD Interface and PWM Controllers
Datasheet download datasheet MAX5953B Datasheet
Additional preview pages of the MAX5953B datasheet.

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Full PDF Text Transcription

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www.DataSheet4U.com 19-3945; Rev 0; 1/06 IEEE 802.3af PD Interface and PWM Controllers with Integrated Power MOSFETs General Description The MAX5953A/MAX5953B/MAX5953C/MAX5953D integrate a complete power IC solution for Powered Devices (PD) in a Power-Over-Ethernet (PoE) system, in compliance with the IEEE 802.3af standard. The MAX5953A/MAX5953B/MAX5953C/MAX5953D provide the PD with a detection signature, a classification signature, and an integrated isolation switch with programmable inrush current control. These devices also integrate a voltage-mode PWM controller with two power MOSFETs connected in a two-switch voltageclamped DC-DC converter configuration. An integrated MOSFET provides PD isolation during detection and classification.
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