S-80939CNNB-G89T2G

Power supply circuits play a critical role in ensuring the reliable and efficient operation of electronic systems. A power system supervisor (PSS) is an electronic circuit that monitors one or more power system parameters, such as voltage and current, and takes appropriate action in the event of any detected abnormality. The S-80939CNNB-G89T2G is a low-power, single-channel, zero-crossing power system supervisor (PSS) with current limit and overtemperature alarm outputs (OTAs) designed for use in automotive and other applications.

Applications of S-80939CNNB-G89T2G

The S-80939CNNB-G89T2G is designed for automotive systems that require low power consumption and ultra-low standby current. It is compatible with a wide range of operating voltages, including those between 4.5V and 45V. Some applications include car engines, brake systems, transmission systems, fuel systems, lights, security systems, engine insulation systems, and motor protection systems. Additionally, the S-80939CNNB-G89T2G is suitable for use as an overvoltage, undervoltage, or brownout supervisor in other fields, such as domestic appliances and industrial equipment.

Features of S-80939CNNB-G89T2G

The S-80939CNNB-G89T2G has a narrow operating range and a wide temperature range (-40 degrees Celsius to 125 degrees Celsius). It has an adjustable temperature alarm output and can significantly reduce system power consumption. Other features include an adjustable current limit for driver shutdown protection, an adjustable threshold for the undervoltage monitor, and an adjustable hysteresis on the overtemperature output. The S-80939CNNB-G89T2G also has a low-power sleep mode and a hysteresis cycle for spike rejection.

Working Principle of S-80939CNNB-G89T2G

The S-80939CNNB-G89T2G operates by monitoring a power system’s voltage and issuing an alarm output if a voltage abnormality is detected. When the monitored voltage is outside the predetermined range, a signal is sent to the alarm output. The alarm output can then be used to inform the system of the abnormality. Additionally, the S-80939CNNB-G89T2G has a thermal pre-warning measurement system that uses an N-Channel MOSFET to provide an OTAs signal before the system fails. The S-80939CNNB-G89T2G also has a current limit monitor that is triggered by an overload condition and sends an OTAs signal to adjust the output current limit.

Conclusion

The S-80939CNNB-G89T2G is a low-power, single-channel, zero-crossing power system supervisor (PSS) designed for use in automotive and other applications. It is designed to monitor a wide range of power system parameters and offers a wide temperature range, adjustable temperature alarm output, adjustable current limit for driver shutdown protection, and a low-power sleep mode. The S-80939CNNB-G89T2G operates by monitoring a power system’s voltage and issuing an alarm output if a voltage abnormality is detected. Additionally, it has a thermal pre-warning measurement system and a current limit monitor that can provide an OTAs signal before the system fails.