NCV4276DS18R4

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Introduction

The NCV4276DS18R4 is a positive 5V linear voltage regulator that operates over a wide input voltage range of 1.14V up to 18V. It is designed to provide an adjustable, very low-dropout, high-current linear voltage regulation with maximum efficiency and low power consumption. It is optimized to have low-noise operation, high PSRR and low EMI radiation. It is ideal for applications that require low dropout, high ripple rejection and fast transient response.

Application Field

The NCV4276DS18R4 is widely used in rechargeable battery applications, such as mobile phones, digital cameras, and video recorders. It is also suitable for medium-sized power applications, such as digital TVs, gaming devices, LED lighting systems, and other home electronics. Its low power consumption makes it an ideal choice for wearables, IoT products, medical equipment and other battery-powered devices where a reliable and low power supply is required.

Working Principle

The NCV4276DS18R4 voltage regulator is a type of linear regulator. It uses a series pass transistor to regulate the output voltage. The input voltage is applied to the series pass transistor, and the transistor current is controlled to keep the output voltage constant. When the output voltage rises, the transistor current decreases; when the output voltage falls, the transistor current increases. The output voltage is set by the feedback voltage from the output to the error amplifier that is internally connected to the series pass transistor. This voltage is compared to a reference voltage, and the error amplifier adjusts its output to control the series pass transistor until the output voltage is regulated.

In addition, the NCV4276DS18R4 employs a special BiCMOS technology to reduce the power consumption while providing low noise, high power supply rejection, high output current and fast transient response performance. Its internal architecture consists of a p-channel MOSFET and an NPN transistor, which provides an extremely fast, low noise and low output impedance. The device also uses a high-current output structure, which can provide up to 500mA output current.

Advantages

The NCV4276DS18R4 voltage regulator offers many advantages for its users. It has an adjustable output voltage and low dropout voltage, which can be set within 1.235V-18V range. This regulator also features fast transient response and a wide input voltage range of 1.14V to 18V. It is optimized for low noise operation, high power supply rejection and low EMI radiation, making it ideal for wearable and medical applications. It is a very efficient regulator with an impressive 500mA output current.

Conclusion

The NCV4276DS18R4 voltage regulator is a type of positive 5V linear voltage regulator that offers a wide input voltage range of 1.14V to 18V, fast transient response, adjustable output voltage and low dropout voltage. It is ideal for applications in medium-sized power, rechargeable battery systems and other battery-powered devices that need reliable and low power supply. Its low power consumption, high ripple rejection, low noise operation, and high output current makes it a highly efficient regulator.

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