AP2138R-2.8TRG1

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AP2138R-2.8TRG1 Application Field and Working Principle

AP2138R-2.8TRG1 is an advanced power management integrated circuit (PMIC) designed specifically for linear voltage regulator applications. This high performance device is designed with a high power transistor output (HPT), low power transistor input (LPT) and a precision voltage reference. The PMIC is designed to provide an efficient, low noise, low-power voltage regulator solution with low output voltage ripple and excellent temperature performance.

The AP2138R-2.8TRG1 is intended to be used in a wide range of applications including, but not limited to, DC-DC converters, computer power supplies, peripherals, low-power automotive applications and consumer electronics.

AP2138R-2.8TRG1 Working Principle

The AP2138R-2.8TRG1 utilizes a two transistor topology in order to regulate the output voltage. The first transistor (HPT) is used to switch the output source current and the second (LPT) is used to regulate the output voltage. The control voltage of the second transistor is generated by a precision voltage reference which is programmed at the desired output voltage. The output voltage is thus regulated to the programmed voltage until the voltage drop across the output terminals of the regulator meets the programmed limit.

The AP2138R-2.8TRG1 also includes several additional features such as: over-voltage, over-current and short-circuit protection, as well as shutdown and soft-start/restart capabilities. The regulator also includes a dynamic voltage control circuit which enables the regulator to adjust the output voltage when the input voltage is changing or external loads are added or removed. This allows the regulator to maintain the desired output voltage, even under changing conditions.

Conclusion

The AP2138R-2.8TRG1 is an advanced PMIC designed specifically for voltage regulator applications. It offers high performance, low noise, and low power solutions, as well as over-voltage, over-current, and short-circuit protection. The voltage reference also enables the regulator to adjust the output voltage when the input voltage is changing, and the dynamic voltage control circuit allows the regulator to maintain the desired output voltage. This makes the AP2138R-2.8TRG1 an ideal solution for a wide range of applications.

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