AP2125AN-3.3TRG1

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AP2125AN-3.3TRG1 is a voltage regulator that belongs to the category of linear voltage regulators, i.e., it maintains a constant output voltage within certain specified ranges of input voltage and load changes. It belongs to the class of Polymer Multi-Layer Integrated Circuit (PMIC) regulators, which are primarily used in electronic applications such as electronic watches, portable electronic devices and computer systems.

The AP2125AN-3.3TRG1 is a 3.3 V voltage regulator with an output voltage range of 2.25 V and 5.5 V, an accuracy of ±0.5%, and an input voltage range of 2.7 V to 5.5 V. This voltage regulator is capable of delivering up to 300 mA of output current with an output voltage ripple of 30mV. It also features an output capacitor to maintain a stable output voltage. This regulator also incorporates thermal protection and over-voltage protection.

The AP2125AN-3.3TRG1 is ideal for applications that require a low input voltage and high precision output voltages. It is also suitable for use in applications that require low voltage ripple and low heat dissipation. Some areas of application include digital logic circuits, AV equipment, PCs, instrumentation and medical devices.

The AP2125AN-3.3TRG1 works on the principle of linear regulation, i.e., it keeps the output voltage constant during varying load and input voltage changes. The circuit consists of an error amplifier , a voltage reference, and a series of cascading power transistors, configured for linear operation. When the input voltage exceeds the preset output voltage, the error amplifier compares the two signals, and sends a signal to the power transistors to reduce the power delivered, until the output voltage reaches the preset value. Likewise, when the input voltage drops below the output voltage, the error amplifier sends a signal to the power transistor to increase the power delivered, thus maintaining a constant output voltage.

In summary, the AP2125AN-3.3TRG1 is a 3.3 V linear voltage regulator with an output voltage range of 2.25 V to 5.5 V with an accurate output voltage, a low input voltage and low voltage ripple. It is an ideal solution for applications requiring precise voltage regulation and low heat dissipation. This regulator also features over-voltage and thermal protection. It works based on the principle of linear regulation, wherein it sends a signal to the power transistors to reduce or increase the power delivered, depending on the input voltage.

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