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UT01VS50L PDF预览

UT01VS50L

更新时间: 2024-11-07 01:13:23
品牌 Logo 应用领域
艾法斯 - AEROFLEX /
页数 文件大小 规格书
15页 173K
描述
UT01VS50L Voltage Supervisor

UT01VS50L 数据手册

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Standard Products  
UT01VS50L Voltage Supervisor  
Data Sheet  
July 28, 2014  
www.aeroflex.com/voltsupv  
FEATURES  
INTRODUCTION  
4.75V to 5.5V Operating voltage range  
The UT01VS50L’s function is to monitor vital supply and signal  
voltages in microprocessor systems. It provides for safe reset  
during power up, power down and brownout conditions by using  
an internal precision voltage reference.  
Power supply (V ) monitor set by the internal voltage  
DD  
reference at 4.65V  
Precision Input Voltage Monitor using an internal 1.25V  
voltage reference  
Watchdog Timer Circuit monitoring activity on WDI input  
The UT01VS50L monitors activity at an independent watchdog  
input by employing an internal timer and a watchdog output that  
goes low if the input is not toggled within 1.6s. It provides for  
precision voltage threshold detection on an independent voltage  
input which could be used for battery or supply-low monitoring  
- Nominal timeout 1.6s  
RESET output responding to the V monitor and the  
DD  
manual reset input MR  
- Nominal RESET pulse width 200ms  
of a supply voltage other than V  
.
DD  
RESET level valid for V >=1.2V  
DD  
o
o
The UT01VS50L includes an active low manual reset with an  
internal pull-up.  
Operating Temperature Range -55 C to +125 C  
Low Power, Typical 400uA  
Operational environment:  
- Total dose: 300 krad(Si)  
APPLICATIONS  
2
o
- SEL Immune: <110 MeV-cm /mg @125 C  
Voltage Supervisor function for various systems including  
microprocessors, microcontrollers, DSPs and FPGAs  
Critical battery and power supply monitoring  
Replacement of older discrete solutions to improve reliability,  
accuracy and reduce complexity of the systems  
2
- SET Immune: <80 MeV-cm /mg  
Packaging options:  
- 8-lead dual-in-line flatpack  
Standard Microelectronics Drawing (SMD) 5962-11213  
- QML Q and V  
WDO  
RESET &  
DIGITAL CONTROL  
RESET  
MR  
+
VDD  
-
WDI TIMER  
4.65 V  
GND  
PFI  
VREF  
WDI TRANSITION  
DETECTOR  
OSC  
1.25 V  
WDI  
PFO  
-
+
Figure 1. UT01VS50L Functional Block Diagram  
1

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