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參數(shù)資料
| 型號： | MAX5945 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Quad Network Power Controller for Power-Over-LAN |
| 中文描述： | 四路網(wǎng)絡(luò)電源控制器，用于LAN供電 |
| 文件頁數(shù)： | 12/44頁 |
| 文件大?。?/td> | 572K |
| 代理商： | MAX5945 |
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M
Detailed Description
The MAX5945 four-port network power controller con-
trols -32V to -60V negative supply rail systems. Use the
MAX5945, which is compliant with the IEEE 802.3af
standard for PSE in power-over-LAN applications. The
MAX5945 provides PD discovery, classification, current
limit, both DC and AC load disconnect detections, and
other necessary functions for an IEEE 802.3af-compli-
ant PSE. The MAX5945 can be used in either endpoint
PSE (LAN switch/router) or midspan PSE (power injec-
tor) applications.
The MAX5945 is fully software-configurable and pro-
grammable with more than 25 internal registers. The
device features an I
2
C-compatible, 3-wire serial inter-
face and a class-overcurrent detection. The class-over-
current detection function enables system power man-
Quad Network Power Controller
for Power-Over-LAN
12
______________________________________________________________________________________
50
μ
A
90
μ
A
100mA
MAX
FAST
DISCHARGE
CONTROL
212mV
182mV
13V CLAMP
CURRENT-LIMIT
DETECTOR
4mV
OVERCURRENT
(OVC)
OPEN CIRCUIT
(OC)
CURRENT
LIMIT (ILIM)
PWR_EN
10V
VOLTAGE
SENSING
FOLDBACK
CONTROL
9-BIT ADC
CONVERTER
VOLTAGE PROBING
AND
CURRENT-LIMIT
CONTROL
CURRENT SENSING
SENSE_
GATE_
OUT_
DET_
A = 3
AC
DETECTION
ACD_ENABLE
AC DISCONNECT
SIGNAL
(ACD)
ACD
REFERENCE
CURRENT
DETECTION/
CLASSIFICATION
SM
PORT
STATE
MACHINE
(SM)
REGISTER FILE
SERIAL
PORT
INTERFACE
(SPI)
AUTO
MIDSPAN
A0
A1
A2
A3
ANALOG
BIAS/
SUPPLY
MONITOR
AGND
V
EE
+10V ANALOG
+5V DIG
VOLTAGE
REFERENCES
CURRENT
REFERENCES
CENTRAL LOGIC UNIT
(CLU)
DGND
OSC_IN
SCL
SDAIN SDAOUT
V
DD
OSCILLATOR
MONITOR
SHD_
RESET
INT
MAX5945
Figure 1. MAX5945 Functional Diagram
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX5945CAX | Quad Network Power Controller for Power-Over-LAN |
| MAX5945EAX | Quad Network Power Controller for Power-Over-LAN |
| MAX5948 | AND-OR-invert Gates 14-CFP -55 to 125 |
| MAX5948A | -48V Hot-Swap Controllers with External RSENSE |
| MAX5948AESA | -48V Hot-Swap Controllers with External RSENSE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5945CAX | 功能描述:熱插拔功率分布 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 |
| MAX5945CAX+ | 功能描述:熱插拔功率分布 IEEE 802.3af Quad Net Pwr 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 |
| MAX5945CAX+T | 功能描述:熱插拔功率分布 IEEE 802.3af Quad Net Pwr 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 |
| MAX5945CAX-T | 功能描述:熱插拔功率分布 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 |
| MAX5945EAX | 功能描述:熱插拔功率分布 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 |
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