RT9058-50GVL

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RT9058-50GVL Introduction

A voltage regulator is a component that regulates a voltage by supplying or absorbing power. RT9058-50GVL is a type of linear voltage regulator from Richtek Technology Corporations that includes features such as an adjustable output voltage range of 1.214V to 28V, 2% accuracy, and low current output. It is specifically designed for AC/DC adapter applications, providing high-efficiency and high-accuracy performance.

Application Field

RT9058-50GVL is ideally used in AC/DC adapter applications such as portable devices like mobile phones, tablets, and note PCs. It is also applicable to USB charging adapters, low power standby supplies, and many other battery-powered products. This device is designed to reduce overshoot and undershoot, to ensure a smooth transition during the adapting process. Moreover, in order to maintain efficient output, RT9058-50GVL improves the standby current consumption.

Working Principle

The RT9058-50GVL linear voltage regulator is based on a non-inverting, error amplifier feedforward topology. This includes two transistors in the signal path to compensate for the output voltage when it is not regulated. The transistors are used to reduce the difference between the input voltage and the output voltage. The two transistors act in a stabilizing condition and when one transistor is on, the other is off. Consequently, it creates a steady voltage by keeping the voltage drop between the input and output constant.

The RT9058-50GVL also has a built-in soft-start feature that is used to maintain a stable output voltage and reduce inrush current. With the soft-start, gate-charge current flowing in the FETs is reduced during a start state and the output voltage deviation is improved as compared to a standard start state.

Conclusion

RT9058-50GVL is a linear voltage regulator especially designed for AC/DC adapter applications. This device provides advantages like adjustable output voltage range, low current output, and 2% accuracy. The underlying working principle of RT9058-50GVL is based on a non-inverting, error amplifier feedforward topology, which consists of two transistors in the signal path to regulate the output voltage. Additionally, the device is also equipped with a soft start feature for maintaining a stable output voltage and reducing inrush current, thus making it ideal for various applications.

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