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MAX5971A

Maxim Integrated Products
Part Number MAX5971A
Manufacturer Maxim Integrated Products
Description Single-Port 40W IEEE 802.3af/at PSE Controller with Integrated MOSFET
Published Mar 18, 2010
Detailed Description 19-5142; Rev 0; 1/10 TION KIT EVALUA BLE AVAILA www.DataSheet4U.com Single-Port, 40W, IEEE 802.3af/at PSE Controller ...
Datasheet PDF File MAX5971A PDF File

MAX5971A
MAX5971A

Overview
19-5142; Rev 0; 1/10 TION KIT EVALUA BLE AVAILA www.
DataSheet4U.
com Single-Port, 40W, IEEE 802.
3af/at PSE Controller with Integrated MOSFET Features S IEEE 802.
3af/at Compliant S Up to 40W for Single-Port PSE Applications S Integrated 0.
5I Power MOSFET and Sense General Description The MAX5971A is a single-port, power-sourcing equipment (PSE) power controller designed for use in IEEE® 802.
3af/at-compliant PSE.
This device provides powered device (PD) discovery, classification, current limit, and DC and AC load-disconnect detections.
The MAX5971A operates automatically without the need for any software programming and features an integrated power MOSFET and sense resistor.
The device also supports new Class 5 and 2-event classification for detection and classification of high-power PDs.
The MAX5971A provides up to 40W to a single port (Class 5 enabled) and still provides highcapacitance detection for legacy PDs.
The MAX5971A provides input undervoltage lockout (UVLO), input overvoltage lockout, overtemperature detection, output voltage slew-rate limit during startup, and LED status indication.
The MAX5971A is available in a space-saving, 28-pin TQFN (5mm x 5mm) power package, and is rated for the extended (-40NC to +85NC) temperature range.
MAX5971A Resistor S PD Detection and Classification S Programmable Current Limit for Class 5 PDs S High-Capacitance Detection for Legacy Devices S Supports Both DC and AC Load Removal Detections S Current Foldback and Duty Cycle-Controlled Current Limit S LED Indicator for Port Status S Direct Fast-Shutdown Control Capability S Space-Saving, 28-Pin TQFN (5mm x 5mm) Package Ordering Information PART MAX5971AETI+ TEMP RANGE -40NC to +85NC PIN-PACKAGE 28 TQFN-EP* Applications Single-Port PSE End-Point Applications Single-Port PSE Power Injectors (Midspan Applications) Switches/Routers Industrial Automation Equipment Wireless LAN Access Point/WiMAX™ Base Station +Denotes a lead(Pb)-free/RoHS-compliant package.
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