AP2138N-1.4TRG1

PMIC-Voltage Regulators-Linear

The AP2138N-1.4TRG1 is a linear regulator with integrated materials and technologies from different fields. It is designed to provide a safe, efficient, and reliable power supply for a wide range of requirements, from consumer electronics to industrial and commercial applications. The low drop-out voltage and the low quiescent current make it ideal for use in portable devices as well as for higher power demands.

Application Field

The AP2138N-1.4TRG1 is mainly suitable for applications with high currents and high power, such as LED lighting, consumer electronics, communications, automotive electronics, and industrial control systems. The device ensures the supply of stable power, delivering the optimal output voltage required by these applications.

Features

• Low drop-out voltage
• Low quiescent current
• Wide operating voltage range
• High power output
• Integrated protection functions
• High switching speed

Working Principle

The AP2138N-1.4TRG1 consists of an integrated voltage reference, an error amplifier, and an output stage connected in series. Its working principle can be divided into three stages.

The first stage is the reference stage. A base voltage is supplied and is compared with the reference voltage from the integrated voltage reference. Any discrepancy between the two is amplified and the output is fed to the input of the error amplifier. The comparison of the two voltages controls the output operation.

The second stage is the error amplifier stage. The amplifier senses the difference between the output voltage and the reference voltage and adjusts the current to the output stage. The current is controlled by a pass transistor, which controls the output voltage of the device. In this manner, the output voltage is continuously maintained at the desired level.

The final stage is the output stage, which comprises the pass transistor and a series of power switches. The pass transistor is controlled by the error amplifier output signal and adjusts the voltage applied to the output stage. This adjusts the output voltage as required for the application.

The AP2138N-1.4TRG1 utilizes the combination of integrated materials and technologies from different fields to provide a safe and efficient power supply for a wide range of applications. Its low drop-out voltage and low quiescent current make it ideal for use in portable devices and higher power demands.