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SM72442E/NOPB Application Field and Working Principle

SM72442E/NOPB is a special power management integrated circuit (PMIC) device developed by Texas Instruments, mainly used in a variety of voltage regulator applications. The device also has a wide range of useful features such as adjustable output current, over temperature and overload protection, and overload current sense.

SM72442E/NOPB has an on-chip adjustable 3.3V - 30V output voltage regulator, with an available output current of up to 60A, and an adjustable 0.7V - 12V reference voltage. The device also contains other features such as thermal shutdown, current limit, and adjustable soft start.

The main operating principle of the SM72442E/NOPB is based on a feedback loop system with an internal error amplifier. The purpose of the feedback loop is to compare the feedback voltage with the reference voltage, and then adjust the output voltage to maintain the stability of the regulated output voltage. An external voltage divider is used to generate the feedback voltage, and other external components are used for setting up the output voltage.

In addition, the device also includes other useful features such as the adjustable peak current limit, enabling the device to perform its best even in overload conditions. In these cases, the current limit closes the internal switch, thus preventing any possible over current damage and overheating of the device. It also has an internal over-temperature protection, which protects the device from overheating and potential damage due to prolonged exposure to high temperatures.

Furthermore, the adjustable soft-start feature helps to reduce the inrush current at the startup by gradually increasing the output voltage over a preset time period. This helps to reduce the stress on the input power supply, ensuring a smooth operation of the device.

Overall, the SM72442E/NOPB is a highly reliable and efficient PMIC device, suitable for a variety of voltage regulator applications. It is available in a wide range of packages and various other features, making it a versatile and reliable voltage regulator solution.

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