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參數(shù)資料
| 型號(hào)： | MAX5972AETE+T |
| 廠商： | Maxim Integrated |
| 文件頁數(shù)： | 1/13頁 |
| 文件大小： | 1120K |
| 描述： | IC CONTROLLER INTERFACE 16TQFN |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | 以太網(wǎng)供電開關(guān)（PoE） |
| 應(yīng)用： | IP 電話，LAN 網(wǎng)絡(luò)供電，網(wǎng)絡(luò)路由器和交換機(jī) |
| 內(nèi)部開關(guān)： | 是 |
| 電流限制： | 可調(diào) |
| 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(yīng)商設(shè)備封裝： | 16-TQFN-EP（5x5） |
| 包裝： | 帶卷 (TR) |
IEEE 802.3af/at-Compliant, Powered Device Interface
Controller 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 MAX5972A provides a complete interface for a
powered device (PD) to comply with the IEEE
?/DIV>
802.3af/
at standard in a power-over-Ethernet (PoE) system. The
MAX5972A provides the PD with a detection signature,
classification signature, and an integrated isolation
power switch with inrush current control. During the
inrush period, the MAX5972A limits the current to less
than 180mA before switching to the higher current 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 compen-
sate for twisted-pair cable resistive drop and to assure
glitch-free transition during power-on/-off conditions. The
MAX5972A can withstand up to 100V at the input.
The MAX5972A supports a 2-event classification method
as specified in the IEEE 802.3at standard and provides a
signal to indicate when probed by Type 2 power-sourcing
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 MAX5972A also provides a power-good (PG) signal,
two-step current limit and foldback, overtemperature
protection, and di/dt limit.
The MAX5972A is available in a 16-pin, 5mm x 5mm,
TQFN power package. This device is rated over the
-40NC to +85NC extended temperature range.
Applications
IEEE 802.3af/at-Powered Devices
IP Phones, Wireless Access Nodes, IP Security
Cameras
WiMAXK Base Station
Features
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 to 5
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 Overtemperature Protection
S Thermally Enhanced, 5mm x 5mm, 16-Pin TQFN
19-4924; Rev 1; 2/10
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Ordering Information
Pin Configuration
WiMAX is a trademark of WiMAX Forum.
IEEE is a registered service mark of the Institute of Electrical
and Electronics Engineers, Inc.
TQFN
(5mm ?/DIV>
5mm)
TOP VIEW
*EP = EXPOSED PAD. CONNECT TO V
SS
.
+
3
4
2
1
10
9
11
EP*
5
6
V
DD
8
16
15
13
DET
I.C.
CLS
2EC
PG
WAD
MAX5972A
7
14
N.C.
12
EV
A
LU
A
T
IO
N
KI
T
A
VA
IL
A
B
LE
PART
TEMP RANGE
PIN-
PACKAGE
SLEEP
MODE
MAX5972AETE+
-40NC to +85NC 16 TQFN-EP*
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| MAX5981BETE+ | IC CTRLR PD IEEE 802.3AF 16TQFN |
| MAX5986AETE+ | IC POE SWITCH PSE 16TQFN |
| MAX6509CAZK/V+T | IC TEMP SWITCH RES-PROG 5TSOT |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5972AEVKIT | 制造商:Maxim Integrated Products 功能描述:IEEE 802.3AF/AT-COMPLIANT POWERED DEVICE INTERFACE CONTROLLE - Boxed Product (Development Kits) |
| MAX5972BETE+ | 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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5972BETE+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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5973BETL+ | 功能描述:監(jiān)控電路 Phase Redundancy Power Supervisor RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX5973BETL+T | 功能描述:監(jiān)控電路 Phase Redundancy Power Supervisor RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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