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ADM812ZART-REEL-7

更新时间： 2024-09-15 14:50:39
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
8页 130K
描述
IC 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO4, TO-253D, SOT-143, 4 PIN, Power Management Circuit

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ADM812ZART-REEL-7 数据手册

 浏览型号ADM812ZART-REEL-7的Datasheet PDF文件第2页浏览型号ADM812ZART-REEL-7的Datasheet PDF文件第3页浏览型号ADM812ZART-REEL-7的Datasheet PDF文件第4页浏览型号ADM812ZART-REEL-7的Datasheet PDF文件第5页浏览型号ADM812ZART-REEL-7的Datasheet PDF文件第6页浏览型号ADM812ZART-REEL-7的Datasheet PDF文件第7页 
Microprocessor Supervisory  
Circuit in 4-Lead SOT-143  
ADM811/ADM812  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
Superior Upgrade for MAX811/MAX812  
Specified over Temperature  
Low Power Consumption (5 ␮A Typ)  
Precision Voltage Monitor: 2.5 V, 3 V, 3.3 V, 5 V Options  
Reset Assertion Down to 1 V VCC  
140 ms Min Power-On Reset  
ADM811/ADM812  
V
CC  
RESET  
GENERATOR  
RESET/RESET  
V
REF  
Logic Low RESET Output (ADM811)  
Logic High RESET Output (ADM812)  
Built-In Manual Reset  
MR  
DEBOUNCE  
GND  
APPLICATIONS  
Microprocessor Systems  
Controllers  
Intelligent Instruments  
Automotive Systems  
Safety Systems  
Portable Instruments  
GENERAL DESCRIPTION  
The ADM811/ADM812 is a reliable voltage monitoring device  
suitable for use in most voltage monitoring applications. The  
ADM811/ADM812 is designed to monitor six different voltages,  
each allowing for a 5% or 10% degradation of standard PSU  
voltages before a reset occurs. These voltages have been selected  
for the effective monitoring of 2.5 V, 3 V, 3.3 V, and 5 V supply  
voltage levels.  
V
V
CC  
CC  
ADM811  
MICROPROCESSOR  
SYSTEM  
MR  
RESET  
RESET  
100k⍀  
GND  
GND  
Included in this circuit is a debounced manual reset input.  
Reset can be activated using an electrical switch (or an input  
from another digital device) or by a degradation of the supply  
voltage. The manual reset function is very useful, especially if  
the circuit in which the ADM811/ADM812 is operating enters  
into a state that can only be detected by the user. Allowing the  
user to reset a system manually can reduce the damage or  
danger that could otherwise be caused by an out-of-control or  
locked system.  
Figure 1. Typical ADM811 Operating Circuit  
REV. C  
Information furnished by Analog Devices is believed to be accurate and  
reliable. However, no responsibility is assumed by Analog Devices for its  
use, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat  
may result from its use. No license is granted by implication or otherwise  
under any patent or patent rights of Analog Devices. Trademarks and  
registered trademarks are the property of their respective companies.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781/329-4700  
Fax: 781/326-8703  
www.analog.com  
© 2003 Analog Devices, Inc. All rights reserved.  
12345678

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