LT3083IQ#PBF

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LT3083IQ#PBF Application Field and Working Principle

The LT3083IQ#PBF is a high performance, low noise low dropout (LDO) linear regulator, which is ideally suited for ultra-low noise, high current applications. It controls the amount of current delivered to a load while maintaining regulator accuracy and provides fast response to transient demands. The LT3083IQ#PBF is part of Linear Technologies’ family of voltage regulators which can be used for a variety of applications including DC-DC converters, automotive switches, and portable electronics.

Applications

The LT3083IQ#PBF is most useful for applications that require ultra-low noise performance. This can include audio, low-power video and telecom circuits. As a LDO, it offers a lesser voltage drop than a typical switcher, which is ideal for high current applications. Additionally, the LT3083IQ#PBF is designed to provide high PSRR and low EMI, making it an excellent choice for noise-sensitive applications. The processor is an excellent choice for automotive switch, low noise voltage regulators, portable electronics, and power sequencing solutions.

Features

The LT3083IQ#PBF is a low power consumption, low noise linear regulator. It supports up to 10A output current and up to 16V input voltage. The high PSRR (117dB @ 10kHz), low EMI, and 0.01% load regulation makes it an excellent choice for high performance applications. Additionally, the device consumes very little power, operating with only 900 uA of active current. This makes it ideal for battery-powered applications.

Working Principle

The LT3083IQ#PBF is an LDO regulator, meaning it operates using the principle of feedback to maintain a constant load voltage, regardless of fluctuations in input voltage or current. The feedback loop is set up to ensure that the output device is able to sustain a constant current and maintain a constant output voltage in the face of fluctuations in the load or in the input voltage. The LT3083IQ#PBF operates in a linear fashion, meaning it is composed of a series of transistors that regulate current flowing through them. The output of the regulator is the output voltage, and is determined by the value of resistor R1. The feedback loop is composed of a resistor R2 and a voltage reference, which allows the output device to measure the exact voltage being driven to the load.

Advantages

The LT3083IQ#PBF is an ultra-low noise LDO regulator with very low power consumption, making it ideal for battery-powered applications. It has a high PSRR and low EMI, making it an excellent choice for noise sensitive applications. Moreover, it is capable of delivering up 10A of current and up to 16V of input voltage. All these benefits make it an excellent choice for ultra low-noise, high current applications.

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