NCV4275CDT50RKG

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NCV4275CDT50RKG is a part of a series of high-performance, low-dropout linear regulators designed for a wide range of applications. The NCV4275CDT50RKG works by controlling the voltage in a circuit. It does this by controlling the current through the circuit by reducing the difference between the input voltage and the output voltage. This type of linear regulator is commonly used in portable electronics and communication systems, such as cameras, phones, and tablets.

Application Field

NCV4275CDT50RKG is suitable for any application where a low-dropout (LDO) voltage regulator is required, such as cellular phones, mobile/wireless communication systems, portable electronic devices, and other power supplies.

The high-performance, low-dropout linear regulator of the NCV4275CDT50RKG provides high accuracy and stringent regulation of the output voltage with minimal drop-out voltage, making it ideal for battery-operated and low-input voltage applications. The device has low quiescent current, making it effective for extended battery life, and it is adjustable to allow operating within the application\'s operating range.

The NCV4275CDT50RKG is well-suited for low power, highly sensitive applications where low noise, fast transient response, and reduced output voltage ripple are important considerations. It is designed to operate within a wide input voltage range from 1.8V to 5.5V, and is guaranteed to deliver up to a maximum output current of 150mA.

Working Principle

At the heart of the NCV4275CDT50RKG is a precision voltage reference, a voltage amplifier, and a pass device. The voltage reference provides an accurate output voltage to the amplifier. The amplifier, which is an operational amplifier, responds to the voltage reference, amplifying its output and controlling the current through the pass device, which is typically a p-channel MOSFET. This pass device is the output of the linear regulator and its resistance is less than the resistance of the load being powered.

The voltage reference is maintained at a constant voltage which is determined by the resistor divider values connected to the reference (VREF). The amplifier is designed to minimize any changes in the output voltage when there is a load change. In other words, the load current is “regulated” by the amplifier. The amplifier also has a minimum output impedance so that it can sink any current that is generated by the load.

The pass device is controlled by the amplifier, the voltage reference provides the necessary voltage, and the output voltage is regulated by the amplifier. When the input voltage to the regulator varies, the amplifier adjusts the pass device resistance to maintain a constant output voltage. By adjusting the pass device resistance, the amplifier effectively increases or decreases the amount of load current to maintaining a constant voltage.

In summary, the NCV4275CDT50RKG is a low-dropout linear voltage regulator designed for low power, highly sensitive applications. It is designed to operate over a wide input voltage range and is guaranteed to deliver up to a maximum output current of 150mA. The device has low quiescent current, which makes it perfect for battery-operated, low input voltage applications. The built-in amplifier provides constant output voltage and low output impedance, which makes it ideal for reducing output ripple and minimizing noise.

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