AS7808ADTR-G1

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The AS7808ADTR-G1 is a low dropout linear voltage regulator designed to provide positive output voltages from a 3V to 5.5V input range. It provides easily adjusted output voltage and wide input/output voltage range, making it ideal for a variety of application requirements. The device combines both a high voltage transistor and a low voltage transistor, thus forming a switching power supply, which makes it more efficient than other linear voltage regulator designs. In addition, it has a current limiting feature that prevents excessive current from damaging the device.

Application Field

The AS7808ADTR-G1 can be used in a number of small portable equipment such as personal digital assistants (PDAs), digital cameras and other consumer electronics. It is also suitable for various applications including portable medical devices, battery-powered medical instruments, portable gaming systems, industrial automation, and automotive applications. Thanks to its adjustable output voltage feature, it can be used in a wide range of applications, providing the ability to precisely adjust the regulated output voltage.

Working Principle

The AS7808ADTR-G1 is a low dropout linear voltage regulator. It works by utilizing the difference between the input and the output voltages to provide a regulated output voltage. It is based on a voltage divider principle, which utilizes a high and low voltage transistor, effectively forming a switching power supply. When the load on the device is increased, more current is drawn from the input side of the device which causes the voltage to drop. The voltage regulator then adjusts the transistor sizes to maintain the correct voltage. With the currents maintained, a constant output voltage is maintained. This feature is known as current limiting and helps to protect the device from short circuits, over-temperature conditions, and over-current conditions.

The AS7808ADTR-G1 also offers excellent transient response, low noise and low total harmonic distortion, and a wide input voltage range. This makes it suitable for both linear and switching regulation applications. It is also available in an adjustable version, which allows the output voltage to be easily changed on the fly. This is especially useful in applications where the output voltage needs to be regulated in accordance with varying load conditions.

Conclusion

The AS7808ADTR-G1 is a low dropout linear voltage regulator that offers an adjustable output voltage and wide input/output voltage range, making it ideal for a variety of application requirements. It combines both a high voltage transistor and a low voltage transistor, thus forming a switching power supply and provide a regulated output voltage. In addition, the device features current limiting, low noise, and low harmonic distortion. This makes it suitable for both linear and switching regulation applications such as PDAs, digital cameras, portable medical devices, and battery-powered medical instruments.

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