LT3083EDF#PBF

Introduction

The LT3083EDF#PBF is a Fixed-Output, low drop-out, linear voltage regulator. It is capable of delivering up to 1A of load current with a dropout voltage as low as 400mV, making it ideal for low VIN-to-VOUT voltage applications. It is designed to provide a high PSRR and low noise figure. The LT3083EDF#PBF is available in a wide variety of outputs and packages for design flexibility.

Application Fields

The LT3083EDF#PBF can be used in a variety of applications, including:

• Small, low-power microcontrollers, where low noise and high PSRR are required.

• Battery-powered systems, where a low dropout voltage is required.

• Automotive systems, where a low quiescent current is required.

• Mobile phones and other hand-held devices, where size is a concern.

Working Principle

The LT3083EDF#PBF works by regulating the output voltage to a fixed value set by an adjustable resistor. An internal reference voltage is compared to the output voltage and an error is generated. The error signal is then amplified and used to adjust the output. The output voltage is adjusted until the error signal is zero.

The LT3083EDF#PBF also features an enable pin that can be used to turn the regulator on or off, depending on the situation. This can be used in battery-powered systems to turn off the regulator when not in use, thereby reducing the system quiescent current.

Features

The LT3083EDF#PBF is available in a variety of packages, and offers a number of features that make it ideal for low-power, low-noise and low-dropout applications:

• Low dropout voltage: 400mV at 1A.

• Wide 3.2V – 40V input range.

• High accuracy: ±1% over-temperature and line regulation.

• Low noise: 0.05mV RMS output noise.

• High PSRR: 80dB.

• Low quiescent current, typically 10mA.

• Enable pin for shutdown.

• Temperature range –40°C to +125°C.

• Low profile packages, including SOT-223, SOT-89, MSOP-8 and DFN-8.

Conclusion

The LT3083EDF#PBF linear voltage regulator is a low dropout regulator that is capable of delivering up to 1A of load current with a dropout voltage as low as 400mV. It is designed for low VIN-to-VOUT voltage applications, and offers a high PSRR and low noise figure. The LT3083EDF#PBF is available in a wide variety of output and package varieties. It is ideal for applications that require low noise, low quiescent current, and high accuracy.