STM1831 is a voltage detector with sense input and external delay capacitor. Its features include: separate sense input, factory-trimmed voltage thresholds in 100 mV increments, ±2% voltage threshold accuracy, operating voltage range of 1.6V to 6.0V, open drain output, low supply current of 0.8µA, time delay programmable by external capacitor, power supply transient immunity, available in SOT23-5 package.
The STM1831 is a voltage detector designed for microprocessor reset circuitry, charge voltage monitors, and power failure detection. It monitors a voltage on a separate sense input (VSEN) and asserts an active-low reset output (RST) when the voltage drops below a threshold. The device features factory-trimmed voltage thresholds in 100 mV increments ranging from 1.6 V to 5.7 V with ±2% accuracy.
| Operating voltage | 1.6 V to 6.0 V |
|---|---|
| Supply current | 0.8 µA (typ.) |
| Voltage threshold accuracy | ±2% |
| Operating temperature | -40 to 85 °C |
| Package type | SOT23-5 |
The CD pin allows the delay of the output to be adjusted by connecting an external capacitor.
The document states that minimum order quantities may apply and advises contacting the local sales office for availability.