Voltage detectors enable enhanced safe recovery
1 min read
STMicroelectronics has introduced a new range of voltage detectors in a bid to enhance system safety and reliability in a variety of applications.
The STM1831 voltage detector can be used in equipment such as autonomous systems and safety related devices to enable the electronics to recover safely if a voltage drop occurs in the power supply. ST claims that unlike other voltage monitors, it has independent connections for the sense input and its own supply voltage to allow the voltage detector to operate reliably even if the monitored voltage falls to 0V.
A selection of factory trimmed voltage thresholds is available from 1.6 to 5.7V in 100mV increments. Users can programme the time delay between when the monitored voltage returns to normal and when the detector deactivates its alarm output.
According to the company, only one external capacitor is needed to programme the delay, which provides flexibility and simplifies design. The STM1831 also draws a small 0.8uA typical supply current to allow for use in low power applications such as battery operated equipment.
