S-80848CLNB-B69T2G

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Power management integrated circuits (PMICs) offer designers the ability to control and protect the power supply and performance of digital systems. PMICs are used in all types of devices, including mobile phones, computing systems, and home and automotive audio systems. One type of PMIC is the supervisory IC, which is designed to monitor the supply voltage, ensure proper power-up sequencing, and alert the system to any breaches of proper voltage levels.

The S-80848CLNB-B69T2G is an example of a power management supervisor IC from ROHM Semiconductor. This advanced PMIC has been developed to meet the processing power, circuit protection, and performance requirements of modern digital systems. Its key features include a compact 5-pin SOP package and low power consumption of just 15 μA (microamps).

Application Field

The S-80848CLNB-B69T2G PMIC is designed to be used in digital systems that require accurate control and protection of the power supply. The IC is suitable for a variety of applications, including battery-powered devices, industrial and medical systems, and systems that require medium-high current levels. The IC can also be used to power audio systems in both automotive and home settings.

Working Principle

The S-80848CLNB-B69T2G consists of three voltage monitor circuits and a number of associated circuits, such as CMOS, comparators, and analog switches. The circuits are designed to monitor the voltage of three voltage sources (VCC, VIN, and VDD) and provide protection against over- and under-voltage conditions. The IC has a reset output pin (RST) that is activated when any of the monitored voltage sources is outside its pre-defined voltage range. The reset output is active-low, meaning that it will be pulled low in the event of an under- or over-voltage condition. The reset pin can be connected to the reset input of a microcontroller to ensure proper system reset in the event of a power supply fault.

The S-80848CLNB-B69T2G also includes a watchdog timer that monitors the state of the microcontroller and can be used to reset the system in the event of a system fault. The watchdog timer can be configured with a watchdog window of up to 10 seconds. The IC can also monitor the state of the power supply, with adjustable thresholds for trip off, reset, and time-out. It can detect a power failure as well as a false trip (when the power supply is not faulty but the IC’s reset output is triggered).

In addition, the IC has a number of fault-monitoring pins, such as OVF (over-voltage fault) and PG (power-good) that can be used to detect and report any power supply problems. The IC also has an open-drain flag output (FLAG) that can be connected to the system’s microcontroller to detect and report power supply faults. Finally, the IC has an enable input (EN) pin that can be used to manually reset or enable the IC.

In summary, the S-80848CLNB-B69T2G is an advanced and versatile supervisory IC from ROHM Semiconductor. The IC offers a variety of features that enable it to monitor and protect the power supply of digital systems. The IC is suitable for a variety of different applications, and its features are designed to ensure accurate control and protection of the power supply.

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