S-80942CNPF-G9CTFG

Power supply supervisors or supervising integrated circuits are important components that help to effectively monitor and protect sophisticated power supply systems. The S-80942CNPF-G9CTFG is a high-precision, low-power, single-channel power-down reset supervisor designed for use in a wide variety of applications. This article will discuss the various application fields and the underlying working principle of this component.

Application Field

The S-80942CNPF-G9CTFG supervisor is used in a number of application fields. These include embedded systems, digital cameras, monitors, and other types of electronic systems. Because of its low operating voltage and current, the supervisor is suitable for controlling switch-mode power supplies that run on low supplies. It is also suitable for use in AC-DC and DC-DC converters, as well as isolated and non-isolated buck converters.

In embedded systems, the supervisor may be used to detect and recover from situations such as brown-out, over-voltage, under-voltage and power supply sequencing problems. When used in monitoring systems such as in digital cameras, monitors, and other types of electronic systems, the supervisor may be used to detect and recover from situations such as cold boot, over-current, short-circuit, quick-charging, and brown-out.

Working Principle

The working principle of the S-80942CNPF-G9CTFG power-down reset supervisor is based on a unique design that includes two comparators, a voltage reference, and a logic-level reset circuit. The comparators continuously measure the power supply and detect faults such as brown-out, over-voltage, and under-voltage conditions. If a fault is detected, the reset circuit is triggered and a low-level reset is delivered to the system.

The supervisor also features a built-in RC circuit to ensure that the reset is stable over a temperature range of -40°C to 125°C. An internal time-delay circuit further increases the stability of the reset operation and can be adjusted to provide the desired reset delay time. The supervisor’s wide operating voltage range of ≤4.5V to ≤6.5V, combined with its low operating current of ≤50nA, ensures compatibility with a variety of power supply systems and power management requirements.

Conclusion

The S-80942CNPF-G9CTFG supervisor is an important component, providing reliable power-down reset monitoring and protection for a variety of applications. Its low voltage, current and temperature specifications, combined with its wide operating voltage range, make it suitable for use in switch-mode power supplies, AC-DC and DC-DC converters, as well as isolated and non-isolated buck converters. Its underlying working principle, which uses two comparators, a voltage reference, and a logic-level reset circuit, enables the component to detect and recover from a variety of power supply-related faults.