■ OUTLINE

The R3111 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, 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. Two output types, Nch open drain type and CMOS type are available.

■ FEATURES

● Ultra-low Supply Current...............................................TYP.0.8µA (VDD=1.5V)

● Wide Range of Operating Voltage....................................... 0.7 to 10.0V(Topt=25°C)

● Detector Threshold....................... Stepwise setting with a step of 0.1V in the range of

0.9V to 6.0V is possible.

● High Accuracy Detector Threshold...................................... ±2.0

● Low Temperature-Drift Coefficient of Detector Threshold............ TYP. ±100ppm/°C

● Two Output Types .......................................... Nch Open Drain and CMOS

● Four Types of Packages...... TO-92, SOT-89(Mini-power Mold), SOT-23-5 (Mini mold), SC-82AB

■ APPLICATIONS

● CPU and Logic Circuit Reset

● Battery Checker

● Window Comparator

● Wave Shaping Circuit

● Battery Back-up Circuit

● Power Failure Detector