Datasheet > MAX5982C

MAX5982C

更新时间： 2024-02-18 02:00:06

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
17页	1940K
描述
IEEE 802.3af/at-Compliant, Powered Device Interface

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数据手册

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MAX5982C 数据手册

19-5960; Rev 0; 6/11

IEEE 802.3af/at-Compliant, Powered Device Interface

Controllers with Integrated 70W High-Power MOSFET

General Description

Features

S Sleep Mode and Ultra-Low-Power Sleep

The MAX5982A/MAX5982B/MAX5982C provide a com-

plete interface for a powered device (PD) to comply with

the IEEE^®802.3af/at standard in a power-over-Ethernet

(PoE) system. The MAX5982A/MAX5982B/MAX5982C

provide the PD with a detection signature, classifica-

tion signature, and an integrated isolation power switch

with inrush current control. During the inrush period,

the MAX5982A/MAX5982B/MAX5982C limit the current

to less than 182mA before switching to the higher cur-

rent limit (1700mA to 2100mA) when the isolation power

MOSFET is fully enhanced. The devices feature an input

UVLO with wide hysteresis and long deglitch time to

compensate for twisted-pair cable resistive drop and to

assure glitch-free transition during power-on/-off condi-

tions. The MAX5982A/MAX5982B/MAX5982C can with-

stand up to 100V at the input.

(MAX5982A/MAX5982B)

S IEEE 802.3af/at Compliant

S 2-Event Classification or an External Wall Adapter

Indicator Output

S Simplified Wall Adapter Interface

S PoE Classification 0–5

S 100V Input Absolute Maximum Rating

S Inrush Current Limit of 182mA Maximum

S Current Limit During Normal Operation Between

1700mA and 2100mA

S Current Limit and Foldback

S Legacy UVLO at 36V

S LED Driver with Programmable LED Current

(MAX5982A/MAX5982B)

The MAX5982A/MAX5982B/MAX5982C support

S Overtemperature Protection

2-Event classification method as specified in the IEEE

802.3at standard and provide a signal to indicate when

probed by a Type 2 power sourcing equipment (PSE).

The devices detect the presence of a wall adapter power

source connection and allow a smooth switchover from

the PoE power source to the wall power adapter.

S Thermally Enhanced, 5mm x 5mm, 16-Pin TQFN

Applications

IEEE 802.3af/at Powered Devices

IP Phones, Wireless Access Nodes, IP Security

Cameras

The MAX5982A/MAX5982B/MAX5982C also provide a

power-good (PG) signal, two-step current limit and fold-

back, overtemperature protection, and di/dt limit. A sleep

mode feature in the MAX5982A/MAX5982B provides low

power consumption while supporting Maintain Power

Signature (MPS). An ultra-low-power sleep mode feature

in the MAX5982A/MAX5982B further reduces power

consumption while still supporting MPS. The MAX5982A/

MAX5982B also feature an LED driver that is automati-

cally activated during sleep mode.

WiMAXK Base Stations

Ordering Information appears at end of data sheet.

The MAX5982A/MAX5982B/MAX5982C are available in

a 16-pin, 5mm x 5mm, TQFN power package. These

devices are rated over the -40NC to +85NC extended

temperature range.

WiMAX is a trademark of WiMAX Forum.

IEEE is a registered service mark of the Institute of Electrical

and Electronics Engineers, Inc.

_______________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

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与MAX5982C相关器件

型号	品牌	获取价格	描述	数据表
MAX5982CETE+	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, BICMOS, 5 X 5 MM, ROHS COMPLIANT, TQFN-16
MAX5982CETE+T	MAXIM	获取价格	Power Supply Support Circuit, Adjustable, 1 Channel, BICMOS, TQFN-16
MAX5984	MAXIM	获取价格	Single-Port, 40W, IEEE 802.3af/at PSE Controller with Integrated MOSFET
MAX5984	ADI	获取价格	单端口、40W、IEEE 802.3af/at PSE控制器，集成MOSFET
MAX5984AETI+	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, BICMOS, 5 X 5 MM, ROHS COMPLIANT, MO-220,
MAX5986A	MAXIM	获取价格	IEEE 802.3af-Compliant, High-Efficiency, Class 1,Powered Devices with Integrated DC-DC Con
MAX5986A	ADI	获取价格	兼容于IEEE 802.3af的高效、Class 1//Class 2 PD，内置DC-D
MAX5986A_13	MAXIM	获取价格	IEEE 802.3af-Compliant, High-Efficiency, Class 1/Class 2, PDs with Integrated DC-DC Conver
MAX5986AETE	MAXIM	获取价格	IEEE 802.3af-Compliant, High-Efficiency, Class 1,Powered Devices with Integrated DC-DC Con
MAX5986AETE+	MAXIM	获取价格	IEEE 802.3af-Compliant, High-Efficiency, Class 1,Powered Devices with Integrated DC-DC Con

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