SC4519ASETRT

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PMIC (Power Management Integrated Circuits) play an important role in the performance, stability and safety of electronic products, especially in applications that require high power and low power consumption. Compared with traditional components, PMIC can reduce the size, improve the efficiency and reduce the total cost of the system. The SC4519ASETRT is a high performance fully integrated DC to DC frequency stepping buck regulator, specially designed for power management solutions in high current and low power applications. It features flexible solutions, complex functions and low power consumption.

DC-DC switching regulators, in a general sense, convert the voltage of a DC power source within a certain range, achieving either the high voltage or low voltage output of a certain value. Since the power supply solution with an appropriate voltage is different for different products, the adjustable output voltage is an indispensable feature for DC-DC switching regulators. Therefore, the application field of SC4519ASETRT lies mostly in adjusting the output voltage within a certain range.

The working principle of SC4519ASETRT is based on the assumption that, when one end of a winding is connected with a certain voltage, a certain voltage appears in the other end proportionally. The coil wire\'s specific magnetization coefficient determines the ratio of the two terminal voltages , that is, the voltage conversion ratio. SC4519ASETRT adopts this principle, adjusting the conduction time of two power switchs input and output, to control the output voltage of a certain value.

Specifically, in the working process of SC4519ASETRT, the inductor of the circuit steps up or step down the input terminal voltage to the output end in a certain ratio, then two power switchs switch the voltage and current alternately, and the capacitor records the difference between the output voltage and the reference voltage. Through feedback loop, the chip can adjust the conduction time of the power switchs to keep the output voltage value in a stable range.

To sum up, SC4519ASETRT is a high performance fully integrated DC to DC frequency stepping buck regulator, specially designed for power management solutions. It can take the input voltage as the reference, then accurately adjust its output voltage within a certain range. Moreover, the working principle of the regulator is based on the assumption that, when one end of a winding is connected with a certain voltage, a certain voltage appears in the other end proportionally, and this voltage is regulated by the conduction time of the two power switchs.

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