NCP114BMX300TCG

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NCP114BMX300TCG Application Field and Working Principle

The NCP114BMX300TCG is a high voltage monolithic linear voltage regulator, manufactured by ON Semiconductor. It is an ideal voltage regulator for mobile and other applications requiring higher output voltages, due to its ability to handle a maximum input range of 6.5V to 67V and provide an output voltage of 4.01V to 67V. It is designed to work with input voltages up to 70V and provides protection against overvoltage and short circuit conditions, making it suitable for use in emergency and off-line applications.

The NCP114BMX300TCG is designed to provide an output voltage that is accurate, stable and efficient. It features a maximum output source resistance of 1.4V/A for low-ripple operation and a low quiescent current of 1µA. Its active output voltage adjustment range is up to ±10%. It is also protected against reverse polarity and includes thermal shutdown protection.

The NCP114BMX300TCG achieves a high level of efficiency when operating at low output voltage, improving system reliability and battery life performance. It also has a moderate transient response and excellent line and load regulation. This ensures stable output voltage, as well as a wide range of output current capability. The device is available in standard SOT packages.

Working Principle

The NCP114BMX300TCG operates on a basic operating principle. It has an input voltage that is applied to the input pins and an output voltage that is available at the output pins. The output voltage is determined by an internal reference voltage which is set by a set of on-chip resistors. This reference voltage is compared to the input voltage at the input pins and a current is generated at the output based on the difference between the two. The current then passes through a pass device (FET) and is regulated according to the resistance of the pass device and the voltage from the input pins. The regulator then converts the input voltage to the desired output voltage and maintains the correct current based on the resistance of the pass device.

The NCP114BMX300TCG also incorporates an adjustable output voltage option. The output voltage is adjusted using a single control pin which is connected to a resistive divider network. By changing the voltage on the divider network, the desired output voltage can be set. The output voltage is then adjusted by the internal reference voltage according to the voltage on the divider network.

The device also includes several protection features including thermal shutdown, overvoltage protection, reverse polarity protection and an additional feature known as output current limiting. Output current limiting allows the device to safely shut down if it detects an excessive output current. This feature ensures the regulator will not be damaged if the load is shorted for any reason.

Applications

The NCP114BMX300TCG is an ideal solution for high voltage applications such as smart phones, tablet computers and other mobile devices which require a stable output voltage. It is also suitable for home appliance, automotive and industrial applications. Since it is a monolithic linear regulator, it is able to provide an excellent level of efficiency and a high level of output voltage accuracy. The device is available in SOT packages, making it easy to design into applications.

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