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參數(shù)資料
| 型號(hào)： | MAX5972AETE+T |
| 廠商： | Maxim Integrated |
| 文件頁(yè)數(shù)： | 6/13頁(yè) |
| 文件大?。?/td> | 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) |
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IEEE 802.3af/at-Compliant, Powered Device Interface
Controller with Integrated Power MOSFET
6 ______________________________________________________________________________________
Pin Description
PIN
NAME
FUNCTION
1, 1316
N.C.
No Connection. Not internally connected.
2
V
DD
Positive Supply Input. Connect a 68nF (min) bypass capacitor between V
DD
and V
SS
.
3
DET
Detection Resistor Input. Connect a signature resistor (R
DET
= 24.9kI) from DET to V
DD
.
4
I.C.
Internally Connected. Leave unconnected.
5, 6
V
SS
Negative Supply Input. V
SS
connects to the source of the integrated isolation n-channel power
MOSFET.
7, 8
RTN
Drain of Isolation MOSFET. RTN connects to the drain of the integrated isolation n-channel power
MOSFET. Connect RTN to the downstream DC-DC converter ground as shown in the Typical
Application Circuit.
9
WAD
Wall Power Adapter Detector Input. Wall adapter detection is enabled the moment V
DD
- V
SS
crosses
the mark event threshold. Detection occurs when the voltage from WAD to RTN is greater than 9V.
When a wall power adapter is present, the isolation n-channel power MOSFET turns off, 2EC current
sink turns on. Connect WAD directly to RTN when the wall power adapter or other auxiliary power
source is not used.
10
PG
Open-Drain Power-Good Indicator Output. PG sinks 230FA to disable the downstream DC-DC con-
verter while turning on the hot-swap MOSFET switch. PG current sink is disabled during detection,
classification, and in the steady-state power mode. The PG current sink is turned on to disable the
downstream DC-DC converter when the device is in sleep mode.
11
2EC
Active-Low 2-Event Classification Detect or Wall Adapter Detect Output. A 1.5mA current sink is
enabled at 2EC when a Type 2 PSE or a wall adapter is detected. When powered by a Type 2 PSE,
the 2EC current sink is enabled after the isolation MOSFET is fully on until V
IN
drops below the UVLO
threshold. 2EC is latched when powered by a Type 2 PSE until V
IN
drops below the reset threshold.
2EC also asserts when a wall adapter supply, typically greater than 9V, is applied between WAD and
RTN. 2EC is not latched if asserted by WAD.
12
CLS
Classification Resistor Input. Connect a resistor (R
CLS
) from CLS to V
SS
to set the desired classification
current. See the classification current specifications in the Electrical Characteristics table to find the
resistor value for a particular PD classification.
EP
Exposed Pad. Do not use EP as an electrical connection to V
SS
. EP is internally connected to V
SS
through a resistive path and must be connected to V
SS
externally. To optimize power dissipation, sol-
der the exposed pad to a large copper power plane.
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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(cè)電壓數(shù): 監(jiān)測(cè)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(cè)電壓數(shù): 監(jiān)測(cè)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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