NJM7805FA

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The NJM7805FA is a popular three-terminal voltage regulator with a fixed output voltage of 5V. It is widely used for a variety of applications where a regulated 5V supply is needed. It is classified as a linear regulator, which means it is typically used for relatively low power output from the source, such as microcontrollers, or to provide power for low-voltage devices such as LED displays. The NJM7805FA operates by regulating the input voltage to a constant level, and is designed to maintain a constant voltage regardless of varying line voltage, load current, and temperature.

Application Fields and Uses

The NJM7805FA is used in many industries and applications, such as:

• Automobiles: Often used in the voltage regulation of automotive electronics.
• Video game consoles: Used to regulate the power supply of the console\'s internal electronics.
• Computers: Used to regulate the power supply of the various components of a computer, such as the processor, hard drives, and other peripherals.
• Industrial machinery: Used to maintain constant voltage for machinery operations.
• Consumer electronics: Used to regulate the power supply of various devices such as TVs, DVD players, and other consumer devices.
• Medical devices: Used to regulate the power necessary for medical tests and procedures.

Working Principle

The NJM7805FA is a three-terminal adjustable linear voltage regulator. As a series regulator, it has an input terminal (Vin), an output terminal (Vout) and a ground terminal (GND). It works by regulating the input voltage to a constant level, and maintaining a constant voltage, regardless of varying line voltage, load current, and temperature.

The NJM7805FA works by using an internal reference voltage, which is compared with the output voltage. When the output voltage deviates from the reference voltage, the regulator will adjust the output accordingly, in order to maintain a constant output voltage.

When the input voltage becomes higher than the output voltage, the regulator will decrease the output voltage by increasing the current from the source to the output, thus dissipating the excess energy through heat. Conversely, when the input voltage is lower than the output voltage, the regulator will increase the output voltage by decreasing the current from the source to the output, thus conserving power.

Summary

The NJM7805FA is a popular three-terminal voltage regulator with a fixed output voltage of 5V, and is widely used for applications where a regulated 5V supply is needed. It is classified as a linear regulator, and is used for relatively low power output from the source, such as microcontrollers. It works by regulating the input voltage to a constant level, and is designed to maintain a constant voltage regardless of varying line voltage, load current, and temperature.

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