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G678

更新时间: 2024-11-17 01:25:15
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描述
Micro-Power Reset IC

G678 数据手册

  
Global Mixed-mode Technology  
G678  
Micro-Power Reset IC  
Features  
General Description  
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Internally Fixed Threshold level of 2.3V/2.5V  
The G678 is a micro-power voltage detector supervis-  
ing the power supply voltage level for microprocessors  
(μP) or digital systems. They provide excellent circuit  
reliability and low cost by eliminating external compo-  
nents. It provides internally fixed threshold level of  
2.3V/2.5V. It features low supply current of 3.3μA at  
VCC=3V.  
High Accuracy ±1.5%  
Low Supply Current 3.3µA at VCC=3V  
No External Components Required  
N-Channel Open-Drain Output  
Available in Two Output Configurations  
Open-Drain RESET Output (G678H)  
Open-Drain RESET Output (G678L)  
Guaranteed Reset Valid to VCC = +1V  
4-Pin SC-70-4 (SC-82 / SOT-343) Packages  
These circuits perform a single function: they assert a  
reset signal whenever the VCC supply voltage declines  
below the preset threshold. Once VCC recovered up-  
crossing the threshold level, the reset signal will be  
released.  
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Applications  
The G678 is available in 4-Pin SC-70 (SC-82 /  
SOT-343) Package.  
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Computers  
Controllers  
Intelligent Instruments  
Critical µP and µC Power Monitoring  
Portable / Battery-Powered Equipment  
Pin Configuration  
Typical Application Circuit  
G678TV1  
1
2
4
3
GND  
NC  
RESET/  
RESET  
VCC  
100k  
Pull up  
VCC  
SC-70-4  
GND  
(SC-82 / SOT-343)  
G678  
µP  
VCC  
G678TV2  
RESET/  
RESET  
RESET/  
RESET  
RESET/  
RESET  
1
4
3
VCC  
GND  
GND  
2
NC  
ICC may increased at high TA, Therefore, can not connect  
Resistors to VCC to prevent Icc abnormal behavior at high TA.  
SC-70-4  
(SC-82 / SOT-343)  
TEL: 886-3-5788833  
http://www.gmt.com.tw  
Ver: 1.6  
Apr 10, 2012  
1

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