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LT4356HMS-3 PDF预览

LT4356HMS-3

更新时间： 2024-09-18 02:50:31
品牌 Logo 应用领域
亚德诺 - ADI 光电二极管
页数 文件大小 规格书
24页 631K
描述
Surge Stopper with Fault Latchoff

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中文翻译

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LT4356HMS-3 数据手册

 浏览型号LT4356HMS-3的Datasheet PDF文件第2页浏览型号LT4356HMS-3的Datasheet PDF文件第3页浏览型号LT4356HMS-3的Datasheet PDF文件第4页浏览型号LT4356HMS-3的Datasheet PDF文件第5页浏览型号LT4356HMS-3的Datasheet PDF文件第6页浏览型号LT4356HMS-3的Datasheet PDF文件第7页 
LT4356-3  
Surge Stopper with  
Fault Latchoff  
FEATURES  
DESCRIPTION  
The LT®4356-3 surge stopper protects loads from high  
voltage transients. It regulates the output during an  
overvoltage event, such as load dump in automobiles, by  
controllingthegateofanexternalN-channelMOSFET.The  
output is limited to a safe value thereby allowing the loads  
to continue functioning. The LT4356-3 also monitors the  
n
Stops High Voltage Surges  
n
Adjustable Output Clamp Voltage  
n
Overcurrent Protection  
n
Wide Operation Range: 4V to 80V  
n
Reverse Input Protection to –60V  
n
Low 7µA Shutdown Current  
n
Adjustable Latchoff Fault Timer  
voltage drop between the V and SNS pins to protect  
CC  
n
Controls N-channel MOSFET  
against overcurrent faults. An internal amplifier limits  
the current sense voltage to 50mV. In either fault condi-  
tion, a timer is started inversely proportional to MOSFET  
stress. If the timer expires, the FLT pin pulls low to warn  
of an impending power down. If the condition persists,  
the MOSFET is turned off, until the SHDN pin pulls low  
momentarily.  
n
Shutdown Pin Withstands –60V to 100V  
n
Fault Output Indication  
n
Auxiliary Amplifier for Level Detection Comparator or  
Linear Regulator Controller  
Available in 12-Pin 4mm × 3mm DFN,  
n
10-Pin MSOP, and 16-Pin SO Packages  
The auxiliary amplifier may be used as a voltage detection  
comparator or as a linear regulator controller driving an  
external PNP pass transistor.  
APPLICATIONS  
n
Automotive/Avionic Surge Protection  
n
Hot Swap/Live Insertion  
Back-to-back FETs can be used in lieu of a Schottky diode  
for reverse input protection, reducing voltage drop and  
power loss. The SHDN input turns off the part, including  
the auxiliary amplifier, and reduces the quiescent current  
to less than 7µA.  
n
High Side Switch for Battery Powered Systems  
All registered trademarks and trademarks are the property of their respective owners.  
TYPICAL APPLICATION  
4A, 12V Overvoltage Output Regulator  
Overvoltage Protector Regulates Output at  
27V During Transient  
10mΩ  
IRLR2908  
V
OUT  
V
IN  
12V  
ꢙ
ꢇꢒꢎD  
ꢛ ꢌꢜꢔꢝꢞ  
ꢛ ꢋꢁꢁꢂꢎ  
ꢔꢁꢆ ꢅꢐꢕꢓꢈ ꢖꢓRꢗꢘ  
ꢈꢚR  
ꢅ
10Ω  
102k  
ꢆ
ꢅꢐ  
V
SNS GATE OUT  
FB  
ꢑꢁꢆꢄDꢅꢆ  
CC  
383k  
V
CC  
SHDN  
ꢀꢑꢆ  
ꢀꢑꢆ  
4.99k  
ꢑꢟꢆ ꢎDꢠꢓꢖꢈꢎꢡꢇꢘ ꢙꢇꢎꢚꢕ  
ꢀꢁꢁꢂꢃꢄDꢅꢆ  
DC-DC  
+
IN  
LT4356DE-3  
ꢆ
ꢒꢓꢈ  
CONVERTER  
ꢑꢁꢆꢄDꢅꢆ  
100k  
EN  
SHDN  
GND  
ꢁNDꢂꢃꢄꢅLTꢀꢆꢂ  
A
FLT  
FꢀꢁLT  
ꢇꢈꢉꢊꢋꢌꢍꢊꢈꢎꢁꢀꢏ  
OUT  
GND  
TMR  
43563 TA01  
0.1µF  
Rev D  
For more information www.analog.com  
1
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