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NCV47821PAAJR2G application field and working principle

The NCV47821PAAJR2G is an integrated device from ON Semiconductor for DC/DC voltage regulation. It belongs to a category of Power Management Integrated Circuits (PMIC) that are designed for use in wide range applications. This particular device is classified as a linear regulator and provides several advanced features for applications in which a very precise output voltage is crucial.

The NCV47821PAAJR2G is a fixed output, two-terminal linear regulator. The device is designed to maintain an output voltage that is controlled by an external resistor. It has an operating temperature range of -40°C to +85°C and a very low shutdown current of 1.6A. It also features short-circuit protection and thermal protection.

The NCV47821PAAJR2G is suitable for a variety of applications which require a precisely regulated output voltage. These include peripheral logic applications, telecommunications, computers, networks, consumer electronics and automotive applications. The device is also suitable for a variety of commercial products such as battery-operated systems, cordless phones, tablet computers and LCD displays.

Working Principle

The NCV47821PAAJR2G is a linear regulator that works on the principle of voltage regulation. It uses a voltage reference and a feedback mechanism to maintain a constant output voltage even when the input voltage varies. The device has two pins, an input pin and an output pin. The input voltage is applied to the input pin, and a resistor is connected across the output pin to set the desired output voltage.

When the input voltage is greater than the output voltage set by the resistor, the NCV47821PAAJR2G will switch on and begin to regulate the output voltage. The device will draw current from the input and pass it through an internal switch to the output. Any excess current will be dissipated in the form of heat. The output voltage will be regulated to the level determined by the resistor.

Conclusion

The NCV47821PAAJR2G is a fixed output, two-terminal linear voltage regulator from ON Semiconductor. It is designed for use in a wide range of applications which require a precisely regulated output voltage. The device is built using the principles of voltage regulation and can provide an output voltage that is regulated with an accuracy of ±1%. It has a low operating current, low shutdown current and offers temperature and short-circuit protection. As such, it is suitable for many applications including tabletop and medical test equipment, industrial systems, peripheral logic and consumer electronics.

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