S-80123BLPF-JEITFU

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A supervisor integrated circuit (IC) is a device that monitors conditions within a system, such as supply voltage and temperature, and that can generate an interrupt or reset signal when these conditions deviate from an expected operating range. The S-80123BLPF-JEITFU is a supervisor IC designed by Silicon Laboratories and part of their SuperVISOR family of products. This supervisor IC is designed for use in industrial and automotive applications, such as power supplies, engine and transmission control systems, solar energy, and automotive battery management systems.

S-80123BLPF-JEITFU Features

The S-80123BLPF-JEITFU comes in a tiny 4-pin SON package and provides a wide operating temperature range of -40°C to +125°C. It is designed with a single low-voltage PNP transistor that monitors the system’s supply voltage, enabling the supervisor IC to detect supply voltage anomalies. The S-80123BLPF-JEITFU features a configurable time delay and can be programmed for different time delay settings from 8 ms to 32 s, allowing users to adjust the delay time to suit their application’s requirements.

This versatile supervisor IC is designed with a number of unique features such as an integrated watchdog timer, adjustable reset debounce period, power-on delay and reset active filter. The S-80123BLPF-JEITFU offers low current consumption of 2 μA (typical) so it can be used in battery-operated systems, and it is also EMI immune to reduce interference and ensure reliable operation.

Applications

The S-80123BLPF-JEITFU is ideally suited for use in industrial and automotive power management applications. It is ideal for monitoring the voltage in solar energy systems, engine and transmission control systems, automotive battery management systems and AC/DC converters. The low current consumption makes this supervisor IC ideal for use in battery-operated systems.

Working Principle

The S-80123BLPF-JEITFU is designed with a single low-voltage PNP transistor which is used to monitor the system’s supply voltage. When the supply voltage deviates from an expected range, the supervisor IC will generate an interrupt or reset signal to alert the system that the voltage has gone out-of-bounds. It will also generate periodic reset pulses indicated by a low-voltage PNP transistor to notify the system that the voltage is within the specified range.

The S-80123BLPF-JEITFU also includes a watchdog timer which monitors the system’s activity and can reset the system if no activity is detected. This watchdog timer can be configured with different delay settings, allowing users to adjust their settings to meet the needs of their application. Additionally, the S-80123BLPF-JEITFU supports an adjustable reset debounce period to prevent erroneous signals from being sent.

The S-80123BLPF-JEITFU also features a power-on delay and reset active filter, which prevents erroneous resets due to power-on transients. Additionally, the supervisor IC is EMI immune, reducing possible interference and ensuring reliable operation in hostile environments. These features make the S-80123BLPF-JEITFU an excellent choice for applications that require robust voltage and temperature monitoring.

Conclusion

The S-80123BLPF-JEITFU is a compact and versatile supervisor IC designed for use in industrial and automotive applications. This device offers a wide operating temperature range, configurable time delays, low current consumption and robust features such as a watchdog timer, adjustable reset debounce period and power-on delay. Additionally, the S-80123BLPF-JEITFU is EMI immune, making it ideal for use in hostile environments. For these reasons, the S-80123BLPF-JEITFU is an excellent choice for applications that require reliable voltage and temperature monitoring.

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