RT9161A-50GG

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RT9161A-50GG is a voltage regulator from the PMIC - Voltage Regulators - Linear series. It is designed to deliver up to 800mA output current at operating temperature range from -40℃ to 125℃. It includes a wide list of features such as short circuit protection, over temperature protection, built – in soft start, over current protection and thermal shutdown protection. It is an ideal solution for applications requiring low power voltage regulation.

Application Field

RT9161A-50GG is widely used in a variety of applications such as computer peripherals, digital video recorders (DVRs), digital still cameras (DSCs), digital cameras, portable electronic devices, TV box, tablets and other portable media player that requires low power and low ripple voltage regulation. It also used in office automation applications as well as providing voltage regulation for ARM based processors and other related applications.

Working Principle

The RT9161A-50GG acts as a voltage regulator. It uses a feedback loop to adjust the output voltage to a precise value based on a feedback signal from the load. A reference voltage is generated internally and is compared to the external feedback signal. Depending on the comparison result, a voltage error amplifier output will be generated to adjust the output voltage accordingly. This feedback loop will continue until the difference between the reference voltage and the external feedback voltage is minimal. This is how the device maintains precise voltage regulation.

The RT9161A-50GG utilizes a power MOSFET that is connected to a variable current sink or current mirror circuit to control the output current. Depending on the current demands of the load, the power MOSFET will control the output current accordingly. Additionally, the over current protection circuit will kick in to shut down the device and protect it when it reaches the maximum current level.

The RT9161A-50GG is designed for over temperature protection. If the power MOSFET temperature exceeds the specified limit, the device automatically shutdowns itself to protect itself from any damage. The soft start feature is also included to prevent a large surge of current when the device is initially turned on.

The RT9161A-50GG includes a short circuit protection feature which helps to protect the device from short circuit condition which can cause damage to the device. The device also includes a thermal shutdown protection circuit which will trigger when the power MOSFET temperature exceeds the specified limit.

Conclusion

In summary, the RT9161A-50GG is a voltage regulator from the PMIC - Voltage Regulators - Linear series. It is designed for low power, low ripple voltage regulation in a variety of applications such as computer peripherals, DVRs, DSCs and more. It also includes a wide list of features such as short circuit protection, over temperature protection, built – in soft start, over current protection and thermal shutdown protection. All of these features work together to make RT9161A-50GG an ideal solution for applications requiring low power voltage regulation.

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