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參數(shù)資料
| 型號： | MAX5981BETE+ |
| 廠商： | Maxim Integrated |
| 文件頁數(shù)： | 1/16頁 |
| 文件大小： | 1328K |
| 描述： | IC CTRLR PD IEEE 802.3AF 16TQFN |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 1 |
| 類型： | 以太網(wǎng)供電控制器 PD 開關（PoE） |
| 應用： | 供電設備（PSE） |
| 內(nèi)部開關： | 是 |
| 電流限制： | 720mA 至 880mA |
| 電源電壓： | 31 V ~ 60 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-WQFN 裸露焊盤 |
| 供應商設備封裝： | 16-TQFN-EP（5x5） |
| 包裝： | 管件 |
IEEE 802.3af/at-Compliant, Powered Device Interface
Controllers with Integrated Power MOSFET
_______________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxims website at www.maxim-ic.com.
General Description
The MAX5981 provides a com plete interface for a pow-
ered device (PD) to comply with the IEEE
?/DIV>
802.3af/at
standard in a power-over-ethernet (PoE) system. The
MAX5981 provides the PD with a detection signature,
classifica tion signature, and an integrated isolation
power switch with inrush current control. During the
inrush period, the MAX5981 limits the current to less
than 180mA before switching to the higher cur rent limit
(720mA to 880mA) when the isolation power MOSFET is
fully enhanced. The device features 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 MAX5981
can with stand up to 100V at the input.
The MAX5981 supports a 2-Event classification method
as specified in the IEEE 802.3at standard and provides a
signal to indicate when probed by a Type 2 power sourc-
ing equipment (PSE). The device detects the presence
of a wall adapter power source connection and allows
a smooth switch over from the PoE power source to the
wall power adapter.
The MAX5981 also provides a power-good (PG) signal,
two-step current limit and fold back, overtemperature
protection, and di/dt limit. A sleep mode feature in
the MAX5981 provides low power consumption while
supporting Maintain Power Signature (MPS). An ultra-
low-power sleep mode feature in the MAX5981 further
reduces power consump tion while still supporting MPS.
The MAX5981 also features an LED driver that is auto-
matically activated during sleep mode. During sleep
mode, the LED driver sources a peri odic current (I
LED
) at
250Hz (MAX5981A) or 15.625kHz (MAX5981B).
The MAX5981 is available in a 16-pin, 5mm x 5mm TQFN
power package. The device is rated over the -40癈 to
+85癈 extended temperature range.
Features
S Sleep Mode and Ultra-Low Power
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 05
S 100V Input Absolute Maximum Rating
S Inrush Current Limit of 180mA Maximum
S Current Limit During Normal Operation Between
720mA and 880mA
S Current Limit and Foldback
S Legacy UVLO at 36V
S LED Driver with Programmable LED Current
S Overtemperature Protection
S Thermally Enhanced, 5mm x 5mm, 16-Pin TQFN
Applications
IEEE 802.3af/at Powered Devices
IP Phones, Wireless Access Nodes, IP Security
Cameras
WiMAXK Base Stations
19-5732; Rev 2; 8/11
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Ordering Information
WiMAX is a trademark of WiMAX Forum.
IEEE is a registered service mark of the Institute of Electrical
and Electronics Engineers, Inc.
PART
TEMP RANGE
PIN-
PACKAGE
SLEEP
MODE
MAX5981AETE+ -40NC to +85NC 16 TQFN-EP*
Yes
MAX5981BETE+ -40NC to +85NC 16 TQFN-EP*
Yes
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5981BETE+ | 功能描述:熱插拔功率分布 IEEE 802.3af/at PDIC Controller RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5981BETE+T | 功能描述:熱插拔功率分布 IEEE 802.3af/at PDIC Controller RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5982AETE+ | 功能描述:熱插拔功率分布 PDIC, up to 70W RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5982AETE+T | 功能描述:熱插拔功率分布 PDIC, up to 70W RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5982AEVKIT# | 制造商:Maxim Integrated Products 功能描述:PD INTERFACE CONTROLLER FOR HIGH POWER UP TO 70W APPLICATION - Boxed Product (Development Kits) 制造商:Maxim Integrated Products 功能描述:KIT EVAL FOR MAX5982A |
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