NCV4276DSADJR4G

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The NCV4276DSADJR4G linear voltage regulator is an integrated electronic circuit designed to maintain a constant voltage level. It offers low power dissipation and low output noise, making it ideal for a variety of applications. It is a cost-effective solution for many system design applications.

Applications

The NCV4276DSADJR4G is used in a variety of applications such as:

• AC/DC adapters
• Power supply units
• Battery-powered systems
• Power converters
• Automotive electronics

The regulator is also suitable for a range of general purpose applications, such as power and low frequency control circuits.

Working Principle

The NCV4276DSADJR4G linear voltage regulator contains two transistors with two diodes. It is designed to maintain a constant output voltage by controlling the current that passes through the two transistors. The diodes protect the transistor from short circuits and high current flows. The current and voltage sense circuits sample the input voltage and detect overvoltage and overcurrent conditions. The system also features an error amplifier to detect the voltage difference between the reference voltage and the output voltage.

When the input voltage is higher than the reference voltage, the error amplifier triggers the two transistors into conduction, and the excess voltage is dissipated as heat in the transistors, resulting in a constant output voltage. Similarly, if the input voltage is lower than the reference voltage, the transistor switches off and no current is allowed to pass through. As a result, the output voltage is maintained constant.

Features

The NCV4276DSADJR4G linear voltage regulator is capable of outputting a maximum of 4.5V and is rated to handle an output current of up to 500mA. It has a very low shutdown current of 10μA and features short-circuit protection and thermal shutdown. Additionally, it is packaged in a simple SOT-223 package and is also available in an 8-pin SOIC package.

In summary, the NCV4276DSADJR4G linear voltage regulator is a cost-effective solution for many system design applications, providing low power dissipation, low noise output and a low shutdown current. It is capable of handling a large range of input voltages and is suitable for a wide range of applications.

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