NCV4276DS50G

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The NCV4276DS50G is a linear voltage regulator, often referred to as a low-dropout (LDO) regulator. It is designed for use in a wide range of applications, including power management in portable devices, high-efficiency power conversion, stable backup power supply, point-of-load (POL) voltage regulation, and power supply noise reduction. The regulator also provides a wide variety of helpful features, including very low dropout voltage, low quiescent current, good line and load transient response, thermal protection, and overcurrent protection.

Linear voltage regulators are used to provide a stable output voltage across a broad range of operating conditions, even when the input voltage varies. This is achieved by using an internal voltage reference, a feedback loop, and series resistor to regulate output voltage within close limits. When input voltage is higher than the output, current flows through the series resistor and a proportion of the energy is dissipated as heat. This is known as as a “dropout” voltage, i.e. the smallest input/output voltage difference that can be maintained before the output voltage begins to decrease.

The NCV4276DS50G has a low dropout voltage of 75 mV at 1000 mA and very low quiescent current of only 4 μA. Combined with its wide operating temperature range from -40 to +85 °C, it is perfectly suited for use in high efficiency, portable devices with potentially high power demands. The low quiescent current also helps to ensure that devices using the regulator run efficiently and with minimal power consumption.

The regulator also offers a wide range of helpful features, such as short circuit and overcurrent protection, which is designed to protect the device from damage in the event of a short circuit or other overload conditions. Thermal protection shuts down the device in the event of an over-temperature condition and has to be reset manually. The regulatory authority also monitors the input voltage, input voltage ripple, and output voltage for any unacceptable deviations.

The regulator also offers good line and load transient response, ensuring accurate regulation with minimal overshoot or undershoot, especially during dynamic loading conditions. The output voltage is also extremely stable over the full operating temperature range, allowing the voltage to be regulated with precision regardless of the environmental conditions.

The NCV4276DS50G can be used in a wide range of applications including power management in portable devices, high-efficiency power conversion, stable backup power supply, point-of-load (POL) voltage regulation, and power supply noise reduction. It is the ideal choice for applications that require a low dropout voltage, low quiescent current, along with excellent line and load transient response, and high degree of stability in temperature extremes.

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