Description

The R3112N181A-TR-F is a voltage detector IC that is used for system reset in electronic devices. It is a member of the R3112x series which are known for having high detector threshold accuracy and ultra-low supply current. Its voltage reference unit, comparator, resistor net for detector threshold setting, output driver, hysteresis circuit, and output delay circuit are integrated on a CMOS-based platform.

Specifications and features

• Built-in output delay circuit with typ. 100ms time constant achievable with an external capacitor of 0.022µF
• Operating Voltage: 0.7 to 6.0V (Topt=25°C)
• Detector Threshold: 0.9V to 5.0V
• High Accuracy Detector Threshold of ±2.0%
• Two Output Types: Nch Open Drain and CMOS
• Packages available: SOT-23-5(Mini-mold), SC-82AB, SON1612-6

Application Scenarios

The R3112N181A-TR-F voltage detector IC can be used in various applications such as:

• CPU and Logic Circuit Reset
• Battery Checker
• Window Comparator
• Wave Shaping Circuit
• Battery Back-up Circuit
• Power Failure Detector

Comparison

• High accuracy detector threshold
• Ultra-low supply current
• Integrated voltage reference unit, comparator, resistor net for detector threshold setting, output driver, hysteresis circuit, and output delay circuit
• Availability of two output types

• The voltage detector threshold is fixed internally, and adjustment is not possible