The R3111x 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, resistors for detector threshold setting, an output driver and a hysteresis circuit. The detector threshold is fixed with high accuracy internally and does not require any adjustment. Three output types, Nch open drain “L” type, Nch open drain “H” type and CMOS type are available. The R3111x Series are operable at a lower voltage than that for the Rx5VL series, and can be driven by a single battery. Seven types of packages, TO-92 (Discontinued), SOT-89, SOT-23-3, SOT-23-5, SC-82AB, SC-88A and SON1612-6 are available.
The Ricoh R3111x series consists of CMOS-based voltage detector ICs featuring high threshold accuracy and ultra-low supply current. These devices are designed to operate at extremely low voltages, making them suitable for system reset applications and battery monitoring. The series is available in seven different package types, including TO-92, SOT-89, SOT-23-3, SOT-23-5, SC-82AB, SC-88A, and SON1612-6.
| Supply Current Typ. | 0.8uA (-VoeT=1.5V, Voo=-Voer—0.1V) |
|---|---|
| Operating Voltage Range | 0.7V to 10.0V (Topt=25°C) |
| Detector Threshold Range | 0.9V to 6.0V (0.1V steps) |
| Detector Threshold Accuracy | 2.0% |
| Temperature-Drift Coefficient | Typ. 100ppm/°C |
| Maximum Operating Voltage | 12 Vv (Absolute Max) |
The series offers three output types: Nch open drain 'L' type, Nch open drain 'H' type, and CMOS type.
The typical supply current is 0.8uA when -VoeT=1.5V and Voo=-Voer—0.1V.
Recommended applications include CPU and Logic Circuit Reset, Battery Checker, Window Comparator, Wave Shaping Circuit, Battery Back-up Circuit, and Power Failure Detector.