RT8481GE Integrated Circuits (ICs)

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PMIC stands for Power Management Integrated Circuit, which is a general term for a range of specialized integrated circuits that manage the power of electronic systems. As a type of PMIC, RT8481GE is a DC/DC buck converter designed to convert voltages from one level to another between two power domains, such as from 5V to 3.3V. The RT8481GE is an energy efficient, monolithic step-down DC-DC converter with an internal MOSFET and integrated overcurrent protection.

RT8481GE is a mid-to-high current DC/DC buck converter specially designed for power supply applications. Its application field includes computing, home entertainment, automotive and consumer electronics. Featuring flexibility and adaptability, it offers a wide range of applications, such as personal computers, notebooks and tablets, game systems, automotive audio systems and consumer electronics, as well as other applications.

In terms of working principle, RT8481GE is a synchronous step-down DC-DC converter based on buck topology. The power MOSFET takes the role of the switch to maintain a balanced supply. The RT8481GE synchronizes the MOSFET and the internal clock, which is used to synchronize the switching frequency signal. There is also a voltage feedback network, which samples the output voltage and sends a signal to the control loop to maintain the output voltage accuracy.

RT8481GE provides a rich set of circuit protection features, including output over voltage protection (OVP), short circuit protection (SCP), open loop protection (OLP) and hidden mode protection (HMP). In order to protect the converter from current surges, the converter includes a programmable cycle-by-cycle current limit (CCL) function. In addition, RT8481GE is equipped with pulse-by-pulse current limit (PCL). The converter also provides the disable function,which allows the user to disable the converter without the need for a physical switch.

In conclusion, RT8481GE is a DC/DC buck converter designed to convert voltages from one level to another between two power domains. It is broadly used in computing, home entertainment, automotive and consumer electronics, and provides a rich set of circuit protection features, such as OVP, SCP, OLP and HMP. It is also equipped with CCL and PCL for protection against current surges, as well as the disable function. RT8481GE is an energy efficient, monolithic step-down DC-DC converter with an internal MOSFET and integrated overcurrent protection.

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