NCV4279A50D2G

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The NCV4279A50D2G is a low-cost and high-performance 3-terminal LDO linear voltage regulator developed by ON Semiconductor. It provides a guaranteed output current of up to 0.5A while operating from an input voltage range of 4.5V to 30V. This regulator can also be used as a post regulator after a switching regulator to further reduce output voltage ripple. Suitable for automotive and other electronic applications, it is capable of operating ambient temperatures ranging from -40C to 125C. The device is available in the TO-252 (3-pin flat back, small outline package) and an MSOP-8 package.

The NCV4279A50D2G can be used in a variety of automotive, industrial, and consumer applications. These include, but are not limited to, LED lighting, notebook computers, digital cameras, and other battery-powered portable devices. It can also be used in the post-regulation of 12V and 24V DC-DC converters for further voltage ripple reduction. The device features low quiescent current consumption, fast transient response, and an output voltage accuracy of +/-2%. Additionally, the regulator has internal current-limiting protection with over-temperature and short-circuit protection.

NCV4279A50D2G features an internal PNP pass transistor with a voltage feedback loop. When the output voltage increases the voltage feedback loop increases the base drive current to the PNP pass transistor, reducing the amount of current delivered to the load and thus reducing the output voltage. If the output voltage drops, the voltage feedback reduces the base drive of the PNP pass transistor, allowing more current to flow to the load as desired. This reduces the amount of current delivered to the load, resulting in a lower output voltage. The device also features an optional Enable pin which can be used to control the operation of the regulator.

Overall, the NCV4279A50D2G provides a cost-effective and reliable linear voltage regulation solution for automotive, industrial, and consumer applications. It features low quiescent current consumption, fast transient response, and an output voltage accuracy of +/-2%. The device is available in the TO-252 and an MSOP-8 package and is capable of operating in ambient temperatures ranging from -40C to 125C. Additionally, it features internal current-limiting protection with over-temperature and short-circuit protection.

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