LM27403SQ/NOPB

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Today’s electronic products such as laptops, smart phones, and other devices are becoming increasingly powerful and sophisticated, with the growth of the number of integrated circuits they contain. As a result, the demand for power management integrated circuits (PMICs) and related components such as voltage regulators and DC/DC switching controllers is continuously increasing. The LM27403SQ/NOPB is a member of this family of PMIC components that helps ensure that a device’s circuits are powered reliably and safely. This article looks at the LM27403SQ/NOPB application field and working principle.

The LM27403SQ/NOPB is a PMIC voltage regulator of the DC/DC switching controller type that helps to ensure that a device is properly supplied with power. It is a digital controller that is designed to improve efficiency, reduce the number of external components, and minimize bypass current for a cleaner power path. The device contains a high-precision voltage reference, an internal oscillator, and pulse width modulation (PWM) circuitry with adjustable duty cycle and frequency.

The LM27403SQ/NOPB is suitable for a variety of applications. It can be used to create a buck/boost regulator for portable applications such as laptops, tablets, and other mobile devices. It is also suitable for applications such as battery charging systems or solar panel array controllers, due to its wide input voltage range and adjustable output voltage range. It is suitable for both adjustable and fixed output voltages.

The LM27403SQ/NOPB is a flexible device that is suitable for a range of applications. It offers low-noise operation, wide input voltage range, adjustable frequency and duty cycle, independent enable and fault control pins, power-on reset, programmable skip-cycle mode, and adjustable soft-start. It also offers a wide range of protection features such as over-voltage, under-voltage, under-current, and overtemperature protection.

The working principle of the LM27403SQ/NOPB is based on pulse width modulation, which is a technique for controlling the amount of power transferred. The device contains an internal oscillator which produces a PWM signal, and the duty cycle of this signal is adjusted according to the required output voltage. The PWM signal drives an external circuit, and the voltage at the output of this circuit can be adjusted. The LM27403SQ/NOPB also features an adjustable soft-start circuit, which helps to reduce inrush current when the device is initially powered up.

In summary, the LM27403SQ/NOPB is a dependable and flexible digitally controlled voltage regulator of the DC/D switching controller type. It is suitable for a wide range of applications and offers a range of features that help ensure that the device is supplied with power reliably and efficiently. The working principle of the device is based on pulse width modulation, and the adjustable soft-start circuit helps to reduce inrush current when the device is first powered up.

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