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AS1922-18-T PDF预览

AS1922-18-T

更新时间： 2024-02-27 12:17:01
品牌 Logo 应用领域
艾迈斯 - AMSCO 微处理器监控
页数 文件大小 规格书
14页 279K
描述
Triple-Voltage, Micro-Power Microprocessor Supervisory Circuits

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中文翻译

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AS1922-18-T 技术参数

是否无铅：不含铅是否Rohs认证：符合
生命周期：ActiveReach Compliance Code：unknown
风险等级：5.69Is Samacsys：N
Base Number Matches：1

AS1922-18-T 数据手册

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Data Sheet  
AS1920, AS1922  
Triple-Voltage, Micro-Power Microprocessor  
Supervisory Circuits  
1 General Description  
2 Key Features  
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Simultaneous Triple-Voltage Monitoring  
Very-Low Supply Current: 6.2µA  
±1.5% Accuracy Over Temperature  
Reset Time Delay: 200ms  
The AS1920 and AS1922 microprocessor supervisory  
circuits were designed to generate a reset when at least  
one of the three monitored supply voltages falls below  
its respective trip threshold.  
These very-low-current (6.2µA, typ) devices maintain  
reset for a minimum timeout period after all supplies  
have stabilized. Guaranteed to be in the correct state for  
VCC > +1.0V, these devices are perfect for multiple-volt-  
age systems with low current requirements and strict  
monitoring requirements.  
The devices are available as the standard products  
listed in Table 1.  
Power Supply Transient Immunity  
Table 1. Standard Products  
Guaranteed Reset for VCC3 ≥ 1V or VCC18 ≥ 1V  
Active-Low Push/Pull Reset Output (AS1920)  
Active-Low Open-Drain Reset Output (AS1922)  
5-pin SOT23 Package  
Model  
Output Type Supervisory Voltages  
AS1920-18  
AS1922-18  
Push/Pull  
3V, 1.8V, Adjustable  
3V, 1.8V, Adjustable  
Open-Drain  
All devices monitor primary and secondary factory-  
trimmed voltages. Additionally, a third monitoring voltage  
can be selected via an external resistor divider.  
The AS1920 has an active-low push/pull reset output,  
whereas the AS1922 has an active-low open-drain reset  
output.  
3 Applications  
The devices are ideal for personal computers, note-  
books, battery-powered systems, embedded controllers,  
intelligent instruments, automotive systems, critical CPU  
monitoring, and any multi-supply monitoring application.  
The AS1920 and AS1922 are available in a 5-pin  
SOT23 package.  
Figure 1. Typical Application Diagram  
3V  
1.8V  
2.5V  
System  
Logic  
5
VCC3  
4
1
AS1920/  
RESETN  
VCC18  
AS1922  
R1  
130kΩ  
1%  
3
2
0.1µF  
0.1µF  
VCCA  
GND  
R2  
100kΩ  
1%  
www.austriamicrosystems.com  
Revision 1.00  
1 - 14  
1234567...14

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