NCP186AMX175TAG

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Introduction:

The NCP186AMX175TAG is a general purpose, low-dropout (LDO) voltage regulator designed to provide low noise output voltages. It has a wide input voltage range of 6 to 28 volts, while its output voltage range is adjustable from 1.5 to 5.5 volts by using a single external resistor. The NCP186AMX175TAG features a low quiescent current of 9 µA, a very high PSRR value of 65 dB, a fast transient response and a low output noise voltage of 110 µVrms. It is suitable for a wide range of applications.

Application Fields

The NCP186AMX175TAG can be used for a variety of applications, ranging from general purpose to low noise power systems. It is an ideal regulator for providing a stable voltage source for:

• Switching power supplies
• Microprocessors and memory
• Battery powered systems
• Portable electronics
• Automotive systems

The NCP186AMX175TAG is also suitable for providing a stable voltage source in critical audio systems and other precision control circuits, as signals can be transmitted without distortion due to its very low output noise voltage.

Working Principle

The NCP186AMX175TAG utilizes a linear voltage regulator as its means of providing a regulated output voltage. This type of regulator works by controlling the current through a pass transistor in such a way that it maintains a constant voltage across a load, regardless of changes in the load current or variations in the input voltage.

The regulator includes a control circuit that is composed of an operational amplifier, a resistor divider and an error amplifier. The operational amplifier maintains a constant voltage across the pass transistor, while the resistor divider is used to set the output voltage. The error amplifier controls the pass transistor in order to maintain the output voltage.

The NCP186AMX175TAG also has additional features to ensure that the output voltage remains stable. These features include thermal protection, overload protection, over voltage protection, and under voltage protection.

Conclusion

The NCP186AMX175TAG is a wide input, low-dropout linear voltage regulator designed to provide a low noise output voltage. It is suitable for a wide range of applications, including switching power supplies, microprocessors and memory, battery powered systems, and portable electronics. It utilizes a linear voltage regulator to provide a stable voltage source, and it includes additional features to ensure that the output voltage is not affected by changes in load current or variations in the input voltage.

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