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參數資料
| 型號： | MAX5914EMH |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | +48V Quad Hot-Swap Controllers For Power-Over-LAN |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQFP44 |
| 封裝： | MQFP-44 |
| 文件頁數： | 1/20頁 |
| 文件大?。?/td> | 827K |
| 代理商： | MAX5914EMH |
General Description
The MAX5913/MAX5914 are quadruple hot-swap con-
trollers. The MAX5913/MAX5914 independently control
four external N-channel switches to hot-swap system
loads from a single V
CC
supply line. The devices allow
the safe insertion and removal of power devices from
live network ports. Operating supply voltage range is
between +35V and +72V. The devices are intended for
applications in Power-Over-Media-Dependent Interface
(MDI), but are not limited to such usage.
The MAX5913/MAX5914 feature an internal undervolt-
age lockout (UVLO) function that prevents the FET from
turning on, if V
CC
does not exceed the default value of
+32V. The devices also feature a +12V relay driver with
100mA current drive capable of driving low-voltage
+3.3V relays. The MAX5913 features an active-low relay
driver that sinks current when the relay output is
enabled. The MAX5914 features an active-high relay
driver output that sources 1mA to drive an external FET
relay driver when the relay output is enabled. Control
circuitry ensures the relays and the FETs are off until
V
CC
reaches the UVLO threshold. The MAX5913/
MAX5914 use an external sense resistor to enable all
the internal current-sense functions.
The MAX5913/MAX5914 feature a programmable ana-
log current-limit circuit. If the switch remains in current
limit for more than a programmable time, the N-channel
FET latches off and the supply can be restarted either
by autoretry or by an external command after the preset
off-time has elapsed.
The MAX5913/MAX5914 are available in a 44-pin MQFP
package and are specified for the extended -40°C to
+85°C operating temperature range.
Applications
Power-Over-LAN
Power-Over-MDI
IP Phone Switches/Routers
Telecom Line Cards
Network Switches/Routers
Mid-Span Power-Over-MDI
Features
o
Wide Operating Input Voltage Range
+35V to +72V
o
IEEE 802.3AF Compatible
o
Four Independent Power Switch Controllers
o
Open-Circuit Detector
o
On-Board Charge Pumps to Drive External
N-Channel FETs
o
Current Sense with External Resistor
o
Foldback Current Limiting
o
+32V Input Undervoltage Lockout
o
On-Chip +12V, 100mA Voltage Relay Drivers
M
+48V Quad Hot-Swap Controllers For
Power-Over-LAN
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
RTRYEN
STATOUT
OCEN
DGND
V
CC
CSP1
DRAIN1
GATE1
OUT1
CSP2
DRAIN2
FAULT
STAT1
STAT2
STAT3
STAT4
CSP4
DRAIN4
OUT4
GATE4
CSP3
DRAIN3
1
2
3
4
5
6
7
8
9
10
11
1
1
1
1
1
1
1
1
2
2
2
4
4
4
4
4
3
3
3
3
3
3
33
32
31
30
29
28
27
26
25
24
23
O
G
V
R
R
R
D
R
R
A
O
G
V
D
R
O
R
O
R
O
R
O
R
D
MQFP
TOP VIEW
MAX5913
MAX5914
Pin Configuration
Ordering Information
19-2244; Rev 2; 11/02
PART
TEMP RANGE
-40
°
C to +85
°
C
-40
°
C to +85
°
C
PIN-PACKAGE
44 MQFP
44 MQFP
MAX5913
EMH
MAX5914
EMH
Typical Operating Circiut appears at end of data sheet.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX5914EMH+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX5914EMH+D | 制造商:Maxim Integrated Products 功能描述:HOT SWAP CNTRLR 44MQFP - Rail/Tube |
| MAX5914EMH+T | 制造商:Maxim Integrated Products 功能描述:HOT SWAP CNTRLR 44MQFP - Tape and Reel |
| MAX5915AEUI | 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產品: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 |
| MAX5915AEUI+ | 功能描述:熱插拔功率分布 Dual PCI 2.2 Hot Swap Controller RoHS:否 制造商:Texas Instruments 產品: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 |
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