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LTC4367

更新时间： 2024-11-12 14:58:19
品牌 Logo 应用领域
亚德诺 - ADI 控制器
页数 文件大小 规格书
22页 1621K
描述
100V 过压、欠压和反向电源保护控制器

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LTC4367 数据手册

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LTC4367  
100V Overvoltage,  
Undervoltage and Reverse  
Supply Protection Controller  
DESCRIPTION  
FEATURES  
n
Wide Operating Voltage Range: 2.5V to 60V  
The LTC®4367 protects applications where power sup-  
ply input voltages may be too high, too low or even  
negative. It does this by controlling the gate voltages of  
a pair of external N-channel MOSFETs to ensure that the  
output stays within a safe operating range.The LTC4367  
withstands voltages between –40V and 100V and has an  
operating range of 2.5V to 60V, while consuming only  
70µA in normal operation.  
n
Overvoltage Protection to 100V  
n
Reverse Supply Protection to –40V  
n
LTC4367: Blocks 50Hz and 60Hz AC Power  
n
LTC4367: 32ms Recovery from Fault  
n
LTC4367-1: Fast 500µs Recovery from Fault  
n
No Input Capacitor or TVS Required for Most  
Applications  
n
Adjustable Undervoltage and Overvoltage Thresholds  
Two comparator inputs allow configuration of the over-  
voltage (OV) and undervoltage (UV) set points using an  
externalresistivedivider.Ashutdownpinprovidesexternal  
control for enabling and disabling the MOSFETs as well  
as placing the device in a low current shutdown state. A  
faultoutputindicatesthattheGATEpinispullinglowwhen  
the part is in shutdown or the input voltage is outside the  
UV and OV set points.  
n
Controls Back-to-Back N-Channel MOSFETs  
Low Operating Current: 70µA  
Low Shutdown Current: 5µA  
n
n
n
8-Pin MSOP and 3mm × 3mm DFN Packages  
AEC-Q100 Qualified for Automotive Applications  
n
APPLICATIONS  
The LTC4367 has a 32ms turn-on delay that debounces  
live connections and blocks 50Hz to 60Hz AC power. For  
fast recovery after faults, the LTC4367-1 has a reduced  
turn-on delay of 500µs.  
n
Portable Instrumentation  
n
Industrial Automation  
n
Automotive Surge (Load Dump) Protection  
Network Equipment  
n
All registered trademarks and trademarks are the property of their respective owners.  
TYPICAL APPLICATION  
24V Automotive Application with +100V, –40V Protection  
Load Protected from Reverse and Overvoltage at VIN  
ꢒꢓꢈꢔꢉꢑ  
ꢀ
ꢀ
ꢄꢃꢊ  
ꢑꢋ  
ꢀꢁ ꢂ ꢃꢄꢁ  
ꢅꢁ ꢂ ꢆꢁ  
ꢁꢂ  
ꢀꢁꢂꢃ  
ꢄꢂꢃꢅꢆꢇꢃ  
ꢑꢉꢀ  
ꢀ
ꢀꢁ  
ꢏꢋꢊꢐ  
ꢀ
ꢀ
ꢄꢃꢊ  
ꢁꢂ  
ꢀꢁꢂꢃꢄ ꢅꢃꢆꢄꢇꢅ  
ꢉꢇꢉꢘ  
ꢀꢁꢂ  
SHDN  
ꢀ
ꢀ
ꢀꢁꢂ  
ꢀꢁꢂ  
ꢍꢗꢌꢌꢘ  
ꢍꢑꢍꢘ  
ꢃꢀ  
ꢄꢀ  
ꢀꢁꢂꢃ  
ꢄꢂꢃꢅꢆꢇꢃ  
FAULT  
ꢀ
ꢀꢁ  
ꢄꢀ ꢅ ꢆꢇꢀ  
ꢃꢀ ꢅ ꢈꢀ  
ꢑꢔ.ꢉꢘ  
ꢏꢂꢕ  
ꢀꢁꢂꢃ ꢄꢅꢆꢇꢈ  
ꢉꢆꢇꢈ ꢊꢋꢌꢍꢎ  
ꢀꢁꢁꢂꢃꢄꢅꢆꢇ  
ꢖꢊCꢉꢆꢇꢈ  
Rev. C  
1
Document Feedback  
For more information www.analog.com  
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