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MAX5902_07

更新时间： 2024-11-09 05:49:07
品牌 Logo 应用领域
美信 - MAXIM 控制器
页数 文件大小 规格书
14页 334K
描述
+72V, SOT23/TDFN, Simple Swapper Hot-Swap Controllers

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MAX5902_07 数据手册

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19-1988; Rev 3; 1/07  
+72V, SOT23/TDFN, Simple Swapper Hot-Swap  
Controllers  
General Description  
Features  
The MAX5902/MAX5903 are hot-swap controllers that  
allow a circuit card to be safely hot plugged into a live  
backplane without causing a glitch on the power-sup-  
ply rail. These devices operate from +9V to +72V and  
provide the simplest hot-swap solution by eliminating all  
external components except the external p-channel  
MOSFET.  
♦ Wide +9V to +72V Operation  
♦ Requires No External Sense Resistor  
♦ Drives External p-Channel MOSFET  
♦ Limits Inrush Current  
♦ Circuit-Breaker Function  
The MAX5902/MAX5903 limit the inrush current to the  
load and provide a circuit-breaker function for overcurrent  
protection. During startup the circuit-breaker function is  
disabled and the MAX5902/MAX5903 limit the inrush cur-  
rent by gradually turning on the external MOSFET. Once  
the external MOSFET is fully enhanced, the circuit-break-  
er function is enabled and the MAX5902/MAX5903 pro-  
vide overcurrent protection by monitoring the voltage  
drop across the external MOSFET’s on-resistance.  
♦ Less than 2mA Quiescent Current  
♦ ON/OFF Input Permits Load Power-Supply  
Control and Sequencing  
♦ Adjustable Undervoltage Lockout  
♦ Power-Good Output with +72V Rating  
♦ Latching or Automatic Retry Fault Management  
The MAX5902/MAX5903 include an undervoltage lock-  
out (UVLO) function, ON/OFF control input, and a  
power-good status output, PGOOD (MAX5902) or  
PGOOD (MAX5903). A built-in thermal shutdown fea-  
ture is also included to protect the external MOSFET in  
case of overheating.  
♦ Thermal Shutdown Helps Protect the External  
MOSFET  
♦ Available in Two Small Packages  
6-Pin TDFN and SOT23  
Ordering Information  
The MAX5902/MAX5903 offer latched or autoretry fault  
management and are available with 300mV, 400mV or  
500mV circuit-breaker thresholds. Both the MAX5902 and  
MAX5903 are available in small SOT23 and TDFN pack-  
ages, and are specified for the extended -40°C to +85°C  
temperature range. For specific ordering information, see  
the Selector Guide at the end of the data sheet.  
PIN-  
PACKAGE  
PKG  
CODE  
PART  
TEMP RANGE  
U6F+6  
T633+2  
U6F+6  
T633+2  
MAX5902_ _EUT-T+* -40°C to +85°C 6 SOT23-6  
MAX5902_ _ETT-T+* -40°C to +85°C 6 TDFN-6  
MAX5903_ _EUT-T+* -40°C to +85°C 6 SOT23-6  
MAX5903_ _ETT-T+* -40°C to +85°C 6 TDFN-6  
Applications  
*For specific part numbers see the Selector Guide at end of  
data sheet.  
+Denotes lead-free package.  
Network Routers  
Network Switches  
Servers  
RAID  
Base Station Line  
Cards  
Industrial Systems  
Typical Operating Circuits  
Pin Configurations  
50W ISOLATED  
POWER SUPPLY  
BACKPLANE CIRCUIT CARD  
IRFR5410  
+48V  
TOP VIEW  
HOT-SWAP CONTROLLER  
V
1
2
3
6
5
4
ON/OFF  
V
(+)  
LUCENT  
JW050A1  
S
IN  
MAX5902  
GATE  
MAX5902  
MAX5903  
V
S
DRAIN  
GATE  
PGOOD (PGOOD)  
GND  
ON/OFF  
GND  
DRAIN  
PGOOD  
ON/OFF  
(-)  
V
IN  
GND  
SOT23-6  
Typical Operating Circuits continued at end of data sheet.  
( ) ARE FOR MAX5903 ONLY.  
Pin Configurations continued at end of data sheet.  
Simple Swapper is a trademark of Maxim Integrated Products, Inc.  
________________________________________________________________ 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...14

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