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RT4805AWSC Application Field and Working Principle

RT4805AWSC is a high efficiency synchronous step-down DC/DC converter with integrated power switch produced by Richtek Technology Corporation. This particular variant offers up to 95% efficiency while having a wide output voltage range of 0.6V – 3.3V, enabling it to power various devices that require various output voltages. It also supports a maximum output up to 5A and a wide operating voltage range of 3.2V to 12V.

The RT4805AWSC is widely used in various application fields, such as mobile computing devices, gaming consoles, wireless charging systems, digital camera, battery-powered products, automotive applications and consumer electronics. In these systems, it can replace the traditional linear regulator in order to deliver better efficiency and power saving, achieving significant system level power savings.

The RT4805AWSC has a very simple working principle, in which, input voltage is first fed to an internal Saturable Reactor (SR) circuit that reduces EMI noise. This SR circuit then feeds the input voltage to the power switch, whose functioning is to regulate the input voltage. The regulated input voltage is then converted to high frequency to power the output voltage. The output voltage is then regulated back to the desired voltage.

The RT4805AWSC also uses a number of advanced technology features in order to ensure high efficiency and excellent performance. It has automatic OVP, OCP and thermal shutdown design, auto environmental compensation circuit, programmable soft-start, EMI noise filter and programmable frequency sync with external microcontroller or logic pin. Furthermore, the power switch is current limited, short circuit proof and temperature compensated.

In summary, RT4805AWSC is a high efficiency synchronous step-down DC/DC converter with integrated power switch that offers wide range of output voltage and high efficiency performance. It is widely used in various application fields, such as mobile computing devices, gaming consoles, wireless charging systems, digital camera, battery-powered products, automotive applications and consumer electronics. It has a very simple working principle, making it a great choice for system level power savings.

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