2001. Apr. 4
LOW VOLTAGE DETECTOR WITH OUTPUT DELAY
R3112xxx1A/C Series
s
OUTLINE
The R3112 Series are voltage detector ICs with high detector threshold accuracy and ultra-low
supply current by CMOS process, which can be operated at an extremely low voltage and is used for
system reset as an example.
Each of these ICs consists of a voltage reference unit, a comparator, resistor net for detector
threshold setting, an output driver, a hysteresis circuit, and an output delay circuit. The detector
Nch open drain type and CMOS type are available.
Two types of packages, SOT-23-5 and ultra small SC-82AB can be selected so that high density
mounting on boards is possible.
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FEATURES
qBuilt-in
Output Delay Circuit
鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?/div>
TYP. 100ms with an external capacitor: 0.022碌F
qUltra-low
Supply Current
鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?/div>
TYP. 1.0碌A(chǔ) (V
DD
=3.5V)
qWide
Range of Operating Voltage
鈥?鈥?鈥?鈥?鈥?鈥?/div>
0.7鈭?.0V(Topt=25擄C)
qDetector
Threshold
鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?/div>
Stepwise setting with a step of 0.1V in the range of 0.9V to 5.0V
is possible.
qHigh
Accuracy Detector Threshold
鈥?鈥?鈥?鈥?鈥?鈥?鈥?/div>
鹵2.0%
qLow
Temperature-Drift Coefficient of Detector Threshold
鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?/div>
TYP. 鹵100ppm/擄C
qTwo
Output Types
鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?/div>
Nch Open Drain and CMOS
qTwo
Types of Packages
鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?鈥?/div>
SOT-23-5 (Mini-mold), SC-82AB
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APPLICATIONS
鈥?/div>
CPU and Logic Circuit Reset
鈥?/div>
Battery Checker
鈥?/div>
Window Comparator
鈥?/div>
Wave Shaping Circuit
鈥?/div>
Battery Back-up Circuit
鈥?/div>
Power Failure Detector
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BLOCK DIAGRAMS
R3112XXX1A
V
DD
R
D
OUT
R3112XXX1C
V
DD
+
-
Vref
Vref
R
D
+
--
OUT
GND
GND
C
D
C
D
Rev. 1.10
-1-
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R3112N091C相關(guān)型號PDF文件下載