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MAX5955BUEE

更新时间： 2024-10-16 02:49:31
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美信 - MAXIM /
页数 文件大小 规格书
15页 360K
描述
Low-Voltage, Dual Hot-Swap Controllers with Independent On/Off Control

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MAX5955BUEE 数据手册

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19-3813; Rev 0; 9/05  
Low-Voltage, Dual Hot-Swap  
Controllers with Independent On/Off Control  
/MAX956  
General Description  
Features  
o Safe Hot Swap for +1V to +13.2V Power Supplies  
The MAX5955 and MAX5956 are +1V to +13.2V dual  
hot-swap controllers with independent on/off control for  
complete protection of dual-supply systems. They allow  
the safe insertion and removal of circuit cards into live  
backplanes. The MAX5955 and MAX5956 operate  
down to 1V provided one of the inputs is above 2.7V.  
with V  
or V  
≥ 2.7V  
IN1  
IN2  
o Independent On/Off Control for Each Channel  
o Internal Charge Pumps Generate n-Channel  
MOSFET Gate Drives  
o Inrush Current Regulated at Startup  
o Circuit-Breaker Function  
The discharged filter capacitors of the circuit card pro-  
vide low impedance to the live backplane. High inrush  
currents from the backplane to the circuit card can burn  
up connectors and components, or momentarily collapse  
the backplane power supply leading to a system reset.  
The MAX5955 and MAX5956 hot-swap controllers pre-  
vent such problems by gradually ramping up the output  
voltage and regulating the current to a preset limit when  
the board is plugged in, allowing the system to stabilize  
safely. After the startup cycle is completed, two on-chip  
comparators provide VariableSpeed/BiLevel™ protection  
against short-circuit and overcurrent faults, as well as  
immunity against system noise and load transients. In the  
event of a fault condition, the load is disconnected. The  
MAX5955B and MAX5956B must be unlatched after a  
fault, and the MAX5955A and MAX5956A automatically  
restart after a fault.  
o Adjustable Circuit Breaker/Current-Limit  
Threshold from 25mV to 100mV  
o VariableSpeed/BiLevel Circuit Breaker Response  
o Autoretry or Latched Fault Management  
o Status Outputs Indicate Fault/Safe Condition  
o Output Undervoltage and Overvoltage Monitoring  
or Protection  
Ordering Information  
PART  
TEMP RANGE  
-40°C to +85°C  
-40°C to +85°C  
0°C to +85°C  
0°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
0°C to +85°C  
0°C to +85°C  
PIN-PACKAGE  
16 QSOP  
16 QSOP  
16 QSOP  
16 QSOP  
16 QSOP  
16 QSOP  
16 QSOP  
16 QSOP  
MAX5955AEEE  
MAX5955AEEE+  
MAX5955AUEE  
MAX5955AUEE+  
MAX5955BEEE  
MAX5955BEEE+  
MAX5955BUEE  
MAX5955BUEE+  
The MAX5955 and MAX5956 integrate an on-board  
charge pump to drive the gates of low-cost, external n-  
channel MOSFETs. The devices offer integrated fea-  
tures like startup current regulation and current glitch  
protection to eliminate external timing resistors and  
capacitors. These devices provide open-drain status  
outputs, an adjustable startup timer, and adjustable  
current limits. The MAX5955 provides output undervolt-  
age/overvoltage protection for each channel, while the  
MAX5956 provides undervoltage/overvoltage monitor-  
ing for each channel.  
+Denotes lead-free package.  
Ordering Information continued at end of data sheet.  
Selector Guide and Typical Operating Circuit appear at end  
of data sheet.  
The MAX5955 and MAX5956 are available in a space-  
saving 16-pin QSOP package.  
Pin Configuration  
TOP VIEW  
Applications  
Power-Supply Sequencing  
PGOOD1  
TIM  
1
2
3
4
5
6
7
8
16 PGOOD2  
15 ON2  
Base Station Line Cards  
IN1  
14 IN2  
Network Switches,  
Routers, Hubs  
Hot Plug-In Daughter  
Cards  
SENSE1  
GATE1  
GND  
MAX5955  
MAX5956  
13 SENSE2  
12 GATE2  
11 ON1  
Solid-State Circuit  
Breakers  
Portable Computer Device  
Bays (Docking Stations)  
RAID  
LIM1  
10 LIM2  
MON1  
9
MON2  
Variable Speed/BiLevel is a trademark of Maxim Integrated  
Products, Inc.  
QSOP  
________________________________________________________________ Maxim Integrated Products  
1
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.  
1234567...15

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MAX5955BUEE 替代型号

型号 品牌 替代类型 描述 数据表
MAX5955BEEE+ MAXIM

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MAX5955BUEE+ MAXIM

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 Power Supply Support Circuit, Adjustable, 2 Channel, BICMOS, PDSO16, 0.150 INCH, 0.025 INC
MAX5955BEEE+T MAXIM

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 Power Supply Support Circuit, Adjustable, 2 Channel, BICMOS, PDSO16, 0.150 INCH, 0.025 INC

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MAX5955BUEE+ MAXIM

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 		Power Supply Support Circuit, Adjustable, 2 Channel, BICMOS, PDSO16, 0.150 INCH, 0.025 INC
MAX5956 ADI

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 		低电压、双路、热插拔控制器，带有独立的开/关控制
MAX5956AEEE ROCHESTER

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 		2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16, 0.150 INCH, 0.025 INCH PITCH, MO-137AB, QSOP-1
MAX5956AEEE+ MAXIM

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 		Power Supply Support Circuit, Adjustable, 2 Channel, BICMOS, PDSO16, 0.150 INCH, 0.025 INC
MAX5956AUEE+ MAXIM

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 		Power Supply Support Circuit, Adjustable, 2 Channel, BICMOS, PDSO16, 0.150 INCH, 0.025 INC
MAX5956AUEE+T MAXIM

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 		Power Supply Support Circuit, Adjustable, 2 Channel, BICMOS, PDSO16, 0.150 INCH, 0.025 INC
MAX5956BEEE+ ROCHESTER

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 		2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16, 0.150 INCH, 0.025 INCH PITCH, LEAD FREE, MO-13
MAX5956BUEE+ MAXIM

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 		Power Supply Support Circuit, Adjustable, 2 Channel, BICMOS, PDSO16, 0.150 INCH, 0.025 INC
MAX5956BUEE+ ROCHESTER

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 		2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16, 0.150 INCH, 0.025 INCH PITCH, LEAD FREE, MO-13
MAX5956BUEE+T MAXIM

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 		Power Supply Support Circuit, Adjustable, 2 Channel, BICMOS, PDSO16, 0.150 INCH, 0.025 INC

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