LP3875EMPX-ADJ

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LP3875EMPX-ADJ is a low-drop linear voltage regulator from Texas Instruments that is designed for use in portable applications where limited space and low power consumption are desired and higher maximum input voltages may be present. The device offers multiple output voltage possibilities, up to 3.8V, and comes in a 12-pin, thin-SOT-23 package for easy mounting on a PC board. An enable pin allows the device to be shut down for maximum power savings and a power-good indicator pin is used to signal the output voltage. The device can also be used as a power source in system power applications.

The LP3875EMPX-ADJ is a low-dropout (LDO) linear voltage regulator with adjustable output. It is capable of regulating up to 3.8V output voltage with an input voltage range of 2.7V to 5.5V. The device has a typical dropout voltage of 0.2V at 1A output current. It features high accuracy and low output noise, making it ideal for portable battery-powered devices. The device also features an enable pin that allows it to be shut down for maximum power savings.

The main principle of operation of the LP3875EMPX-ADJ is based on the voltage drop across the pass device. As the regulated output voltage is maintained at a voltage different from the input voltage (drop), the pass device controls the current that flows between the input and output as it passes from the input side to the output side of the voltage regulator. This is done by controlling the amount of current that is allowed to pass through the pass device. The regulating performance of the pass device is controlled by a feedback loop and the output regulation is maintained by the sum of the voltage drops in the pass device and feedback loop.

The design of the LP3875EMPX-ADJ makes it suitable for a wide range of applications. It can be used in systems that require either low power or high current while maintaining a stable output voltage. The device is well suited for applications such as system power, battery charging and general purpose voltage regulators. It is also suitable for low-noise and power efficiency applications in portable electronics, such as laptop computers and portable audio equipment. With its small size, high-efficiency of power conversion, and its low-noise characteristics, the device is well suited for applications in the telecommunications and automotive industries.

In summary, the LP3875EMPX-ADJ is a low-dropout linear voltage regulator from Texas Instruments with adjustable output and a typical dropout voltage of 0.2V at 1A output current. It is suitable for a wide range of applications, including system power, battery charging, and general purpose voltage regulation, as well as low-noise and power-efficient applications in portable electronics. The device also features an enable pin for maximum power savings and a power-good indicator pin to signal the output voltage. The main principle of operation of the LP3875EMPX-ADJ is based on the voltage drop across the pass device, which is regulated by a feedback loop.

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