NCP303LSN09T2G Integrated Circuits (ICs)

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PMIC - Supervisors

NCP303LSN09T2G is a low dropout (LDO) voltage supervisor, designed to monitor power supply voltage and alert the microcontroller via a programmable reset event whenever system voltage is out of range. It is a powerful integrated circuit chip that can perform various functions related to managing a power supply within an electrical system. This article will explain the application field and working principle of this important part.

Applications

NCP303LSN09T2G is suitable for use in communications, computer, and other systems where power-on reset and voltage monitoring is required. It can be used to monitor multiple rail voltages in the same system, providing a robust solution to power supply management. It has a low power-off reset threshold, which is suitable for low noise applications that require a minimal quiescent current. Additionally, it has a programmable watchdog function and an adjustable debounce time that allows for customization of the reset logic.

The NCP303LSN09T2G is ideal for mission-critical applications that require a robust and reliable method of power supply management. It can be used in a variety of systems, from consumer electronics to automotive and industrial applications, where power-on reset and voltage monitoring is required.

Working Principle

The NCP303LSN09T2G voltage supervisor maintains the power supply voltage within tolerated levels by using a comparator and voltage reference. Whenever the voltage level exceeds the system’s acceptable range, as determined by the comparator, the supervisor sends a reset signal to the microcontroller. This in turn resets the system and brings the voltage back within range. The chip also includes a watchdog timer that can be programmed to reset the system if the microcontroller is not periodically checked.

The NCP303LSN09T2G is designed to be as efficient as possible, drawing minimal quiescent current from the power supply. This makes it ideal for low power applications, where power consumption needs to be kept to a minimum. Additionally, the chip has an adjustable debounce time that allows users to customize the reset logic according to the system’s exact requirements.

Conclusion

NCP303LSN09T2G is an ultra-low power voltage supervisor, designed to provide excellent power supply management for a variety of applications. With a low power-off reset threshold, adjustable debounce time, and a programmable watchdog function, it is a powerful and reliable solution for power supply monitoring in mission-critical systems.

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