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MAX5982B

更新时间： 2023-12-20 18:45:58
品牌 Logo 应用领域
亚德诺 - ADI 控制器光电二极管
页数 文件大小 规格书
17页 1255K
描述
IEEE 802.3af/at兼容PD接口控制器，集成70W大功率MOSFET

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MAX5982B 数据手册

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Evaluation Kit  
Available  
Design  
Resources  
Tools  
and Models  
Support  
Click here to ask an associate for production status of specific part numbers.  
IEEE 802.3af/at-Compliant,  
Powered Device Interface Controllers with  
Integrated 70W High-Power MOSFET  
MAX5982A/MAX5982B/  
MAX5982C  
General Description  
The MAX5982A/MAX5982B/MAX5982C provide a com-  
Features  
● Sleep Mode and Ultra-Low-Power Sleep  
plete interface for a powered device (PD) to comply with  
the IEEE 802.3af/at standard in a power-over-Ethernet  
(MAX5982A/MAX5982B)  
®
● IEEE 802.3af/at Compliant  
(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 current  
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 com-  
pensate for twisted-pair cable resistive drop and to assure  
glitch-free transition during power-on/-off conditions. The  
MAX5982A/MAX5982B/MAX5982C can withstand up to  
100V at the input.  
● 2-Event Classification or an External Wall Adapter  
Indicator Output  
● Simplified Wall Adapter Interface  
● PoE Classification 0–5  
● 100V Input Absolute Maximum Rating  
● Inrush Current Limit of 182mA Maximum  
● Current Limit During Normal Operation Between  
1700mA and 2100mA  
● Current Limit and Foldback  
● Legacy UVLO at 36V  
● LED Driver with Programmable LED Current  
The MAX5982A/MAX5982B/MAX5982C support  
a
(MAX5982A/MAX5982B)  
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.  
● Overtemperature Protection  
● 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.  
● WiMAX™ 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 -40°C to +85°C and -40°C to  
+125°C extended temperature ranges.  
WiMAX is a trademark of WiMAX Forum.  
IEEE is a registered service mark of the Institute of Electrical  
and Electronics Engineers, Inc.  
19-5960; Rev 4; 11/21  
©
2021 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.  
One Analog Way, Wilmington, MA 01887 U.S.A.  
|
Tel: 781.329.4700  
|
© 2021 Analog Devices, Inc. All rights reserved.  
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MAX5982BETE+ MAXIM

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 		Power Supply Support Circuit, Fixed, 1 Channel, BICMOS, 5 X 5 MM, ROHS COMPLIANT, TQFN-16
MAX5982C MAXIM

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 		IEEE 802.3af/at-Compliant, Powered Device Interface
MAX5982C ADI

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 		IEEE 802.3af/at兼容PD接口控制器，集成70W大功率MOSFET
MAX5982CETE+ MAXIM

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 		Power Supply Support Circuit, Fixed, 1 Channel, BICMOS, 5 X 5 MM, ROHS COMPLIANT, TQFN-16
MAX5982CETE+T MAXIM

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 		Power Supply Support Circuit, Adjustable, 1 Channel, BICMOS, TQFN-16
MAX5984 MAXIM

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 		Single-Port, 40W, IEEE 802.3af/at PSE Controller with Integrated MOSFET
MAX5984 ADI

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 		单端口、40W、IEEE 802.3af/at PSE控制器，集成MOSFET
MAX5984AETI+ MAXIM

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 		Power Supply Support Circuit, Fixed, 1 Channel, BICMOS, 5 X 5 MM, ROHS COMPLIANT, MO-220,
MAX5986A MAXIM

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 		IEEE 802.3af-Compliant, High-Efficiency, Class 1,Powered Devices with Integrated DC-DC Con
MAX5986A ADI

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 		兼容于IEEE 802.3af的高效、Class 1//Class 2 PD，内置DC-D

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