AP2125KC-2.5TRE1

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AP2125KC-2.5TRE1 is a linear voltage regulator that belongs to Power Management Integrated Circuit (PMIC). It offers a high precision output voltage of 2.5 V, together with a low dropout voltage of 0.6 V, a high output current capability at up to 3 A, and a quiescent current of 200 μA. As such, it is well-suited for applications requiring low power consumption and high accuracy.

Application Field

AP2125KC-2.5TRE1 is mainly used in integrated circuits, portable devices, and various types of electronic circuits with power supply and voltage conversion in the system. It is suitable for any type of low power consuming and low cost system, provided that the output voltage is required to be more accurate. Furthermore, it can also be used for post-regulation in a switch power supply. This voltage regulator can be applied in the fields of mobile phone, tablet, TV, camera and other digital products, as well as in buffer applications, power filtration, smartphone, computer power regulation and other power management applications.

Working Principle

AP2125KC-2.5TRE1 is a low dropout linear voltage regulator. Its output is regulated by measuring the difference between the input voltage and the voltage at the adjustable or internal feedback resistor. An error amplifier uses the feedback voltage to compare it with a reference voltage, and then the error amplifier adjusts the output current through the internal pass transistor so that the voltage maintains the set output voltage. By adjusting the potentiometer or adding a series resistor to the internal reference pin, the output voltage can be adjusted. This allows the output voltage to be freely adjusted based on the value of the output voltage.

In normal use, the output current will be variable since the output voltage is determined by the feedback voltage and the input voltage. This can be adjusted using the minimum load current limit, so that the output voltage is not affected even if the load current decreases.The AP2125KC-2.5TRE1 is also equipped with over current protection, such as over temperature protection, reverse connection protection and over current protection. The device will limit the output current to a fixed value when the load current exceeds the set current protection limit. Taken together, these measures ensure reliability and stability of the AP2125KC-2.5TRE1.

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