(R3112xxxx) LOW VOLTAGE DETECTOR - RICOH electronics devices
Description
R3112x SERIES
LOW VOLTAGE DETECTOR WITH OUTPUT DELAY
NO.
EA-087-070112
OUTLINE
The R3112x Series are CMOS-based voltage detector ICs with high detector threshold accuracy and ultra-low supply current, 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, www.
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com an output driver, a hysteresis circuit, and an output delay circuit.
The detector threshold is fixed with high accuracy internally and does not require any adjustment.
Two output types, Nch open drain type and CMOS type are available.
Three types of packages, SOT-23-5, small SC-82AB, and ultra-small SON1612-6 can be selected so that high density mounting on boards is possible.
FEATURES
• • • • • • • • Built-in Output Delay Circuit.
.
Typ.
100ms with an external capacitor: 0.
022µF Supply Current .
.
Typ.
0.
5µA (R3112x271A/C, VDD=2.
6V) Operating Voltage .
.
0.
7 to 6.
0V(Topt=25°C) Detector Threshold.
0.
9V to 5.
0V High Accuracy Detector Threshold .
±2.
0% Low Temperature-Drift Coefficient of Detector Threshold .
.
.
Typ.
±100ppm/°C Two Output Types .
.
Nch Open Drain and CMOS Packages SOT-23-5(Mini-mold),SC-82AB, SON1612-6
APPLICATIONS
• • • • • • CPU and Logic Circuit Reset Battery Checker Window Comparator Wave Shaping Circuit Battery Back-up Circuit Power Failure Detector
1
R3112x
BLOCK DIAGRAMS
R3112xxx1A
VDD RD OUT VDD RD
R3112xxx1C
+ -
+
OUT
Vref
GND GND
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Vref
CD
CD
SELECTION GUIDE
The package type, the detector threshold, ...
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