NCP698SQ50T1G

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Linear voltage regulators (LDOs) are electronic components used to convert a higher input voltage to a low regulated output voltage. The NCP698SQ50T1G is an example of one such component, offering an excellent low-drop voltage regulator with a low quiescent current and an ultra-low shutdown current. This linear voltage regulator is ideal for battery-powered applications, where an ultra-low current draw is necessary to maximize battery life. In this article, we will explore the application field and working principle of the NCP698SQ50T1G.

Application Field of the NCP698SQ50T1G

The NCP698SQ50T1G is designed for low-drop voltage regulation applications that require both high efficiency and compact size. This component is suitable for use in many applications, including automotive, powering mobile devices, powering wireless communications devices, powering audio equipment, and other applications requiring high efficiency and very low power consumption. The NCP698SQ50T1G is also suitable for applications in which an adjustable output voltage is desired. This component is capable of delivering an output voltage between 0.8V and 6.0V with a ±2% accuracy over temperature and line variations.

The NCP698SQ50T1G also offers excellent protection and stability features, including reverse-current protection, thermal shut-down, and under-voltage lockout. This component is also equipped with an open-drain status pin for output voltage monitoring.

Working Principle of the NCP698SQ50T1G

The NCP698SQ50T1G linear voltage regulator is designed around a common collector configuration, also known as a “diode-connected” configuration. This configuration uses a single transistor to drive the output voltage, with the transistor’s base terminal connected to a reference voltage. The transistor’s collector terminal is connected to the specified output voltage. This transistor is then coupled with a pair of emitter resistors and a high precision output capacitor that together produce a stable output voltage.

The NCP698SQ50T1G offers outstanding performance for its size, including high power efficiency (typically greater than 95%) and low quiescent current (typically 0.2 mA at 3.0V output voltage). This component also offers low voltage dropout (typically 0.7V, maximum 0.8V). This low voltage dropout allows for a wide range of output voltage selection without sacrificing power efficiency or causing excessive load or supply current.

Conclusion

The NCP698SQ50T1G is a compact and efficient linear voltage regulator with an output voltage range of 0.8V to 6.0V. This component is ideal for powering low-drop voltage regulation applications, such as powering mobile devices, audio equipment, and other applications requiring high efficiency and very low power consumption. This component offers excellent protection and stability features, including reverse current protection, thermal shut-down, and under-voltage lockout. It is also equipped with an open-drain status pin for output voltage monitoring. The NCP698SQ50T1G utilizes a common collector configuration and offers a high power efficiency and low quiescent current.

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