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Introduction

The NB621EV-LF-Z is a low dropout (LDO) low-noise, low-power linear and switching voltage regulator module. It is specially designed for current demanding and audio applications. It consists of a low-noise internal or external voltage controller and an integrated power stage. The NB621EV-LF-Z is available in a wide range of input voltage, output voltage, and current rating ranges.

Features

The NB621EV-LF-Z features excellent line and load regulation and low quiescent current. Its low-noise performance over a wide range of low- to high-gap frequency makes it ideal for current-demanding and audio applications. The NB621EV-LF-Z is also a great solution for RF applications in which extreme low-noise is paramount. It features two output adjustment pins for setting desired output voltage and current. Furthermore, it has short circuit, over-temperature and over-current protection.

Applications

The NB621EV-LF-Z can be used in a variety of applications. It is suitable for internet of things (IoT) devices, such as smart watches, wireless medical implants, and AR devices. Additionally, it is suitable for automotive applications, such as power management and lighting. Lastly, it is also useful for consumer electronics and industrial applications, such as battery-operated devices and consumer audio products.

Working Principle

The working principle of the NB621EV-LF-Z is a combination of linear and switching techniques. In linear mode, an input voltage is applied to an internal voltage controller, which drives an integrated power stage to regulate the output voltage. The output voltage and current are further adjusted by the output adjustment pins. In switching mode, the input voltage is applied to an oscillator that turns on and off, switching the output voltage and current between off and full-on, respectively. This mode enables high-efficiency voltage regulation and provides very low ripple and noise.

Conclusion

The NB621EV-LF-Z is a low dropout linear and switching voltage regulator module. It is suitable for a variety of applications, ranging from IoT devices to industrial devices. It features excellent line and load regulation and low quiescent current, making it ideal for current-demanding and audio applications. Its low-noise performance over a wide range of low and high frequency ranges, makes it a great solution for RF applications. It works based on a combination of linear and switching techniques.

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