AP2210K-3.3TRG1 Integrated Circuits (ICs)

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AP2210K-3.3TRG1 Application Field and Working Principle

The AP2210K-3.3TRG1 voltage regulator is a monolithicintegrated circuit designed for use as a positive-voltage linear regulator in a small and compact, low-power system. The circuit features internal current and thermal limiting, providing protection against overloads. The adjustable voltage range is from 1.25V to 20V. The output voltage, Vout, for this regulator is set at 3.3 V.

Applications

The AP2210K-3.3TRG1 is suitable for use in electronic circuits powering microprocessor systems, interface, controllers and converters, core and chipset supply. Examples of these include embedded controller, PMIC, motor control, sensors, printer power supply, and smart home functions. The regulator features low drop-out voltage, low quiescent current, and requires little external component count, making it ideal for battery-powered applications.

Working Principle

The working principle of AP2210K-3.3TRG1 is based on the self-limiting nature of the current direction, and the low input voltage range. The voltage output is determined by the voltage divider connected between the input and the output terminals, and the output voltage is the difference between the input voltage and the drop across the series pass transistor, which is determined by the current flowing through it. A feedback transistor ensures that a constant output voltage is maintained regardless of the load current draw.

The AP2210K-3.3TRG1 also includes a built-in over-temperature protection circuit. This circuit reduces output current and stops the IC from providing any more current if the IC temperature increases above a set limit. This prevents the IC from being damaged by operating in adverse thermal conditions.

Conclusion

The AP2210K-3.3TRG1 voltage regulator is an ideal solution for low-power systems due to its small size and low quiescent current. This IC contains a built-in current limiter and over-temperature protection circuit to protect against overloads and excessive temperatures. Its adjustable voltage range of 1.25V-20V makes it appropriate for a wide variety of applications, including those in embedded controllers, PMICs, smart home functions, and motor controls.

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