RT7281GSP Integrated Circuits (ICs)

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Richtek RT7281GSP is a member of the RT7281 family, which is a monolithic synchronous step-down converter with integrated power MOSFETs. This type of voltage regulator can be employed as a DC-to-DC converter and can provide a stable source of power up to 15V. With a wide input voltage range, low quiescent current, and small size, the RT7281GSP is ideal for use in ultra low power applications.

The RT7281GSP operates in three different modes: pulse-frequency modulation (PFM), burst mode, and forced PWM. In PFM, the device operates in a high frequency and low current mode, which produces a low ripple output and excellent efficiency at light loads. When it reaches a certain percentage of the load current, it switches to a forced PWM mode, providing a more efficient and stable output with less ripple. At very low load currents, the device operates in burst mode, only switching on when a minimum load current is required.

Due to its small size and excellent power efficiency, the RT7281GSP is commonly used in portable and battery-driven applications, such as cellular phones, tablets, and wearable devices. It is also useful in industrial applications, such as motor control and LED lighting, where a stable and efficient DC supply is required.

The RT7281GSP is designed with a synchronous buck converter that contains an inductor, a voltage switch, and an energy storage capacitor. The inductor stores energy and the voltage switch alternately connects the input voltage to the output. The energy storage capacitor maintains an output voltage until the input voltage drops below a certain level.

The RT7281GSP provides overcurrent protection, thermal shutdown and overvoltage protection. It also includes a programmable output voltage, allowing the user to adjust the output voltage to suit their particular application.

The RT7281GSP is an ideal power-management solution for applications requiring low power and high efficiency. With its wide input voltage range and small size, it is a great choice for battery-driven or portable applications where space and efficiency are at a premium. Its integrated protection features and adjustable output voltage make it a reliable and efficient power source.

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