Analog Devices Inc.

LT3083EDF

LT3083EDF Description

The LT3083EDF from Analog Devices Inc. is a high-performance, 3A adjustable linear voltage regulator designed for precision power management applications. Housed in a compact 12DFN package, this regulator offers an input voltage range up to 14V and an adjustable output voltage from 0V to 14V, making it highly versatile for low-dropout (LDO) requirements. With a low dropout voltage of 0.42V at 3A, it ensures efficient operation even under high load conditions. The device is obsolete but remains notable for its robust performance in demanding environments.

LT3083EDF Features

• High Output Current: Delivers up to 3A with excellent line and load regulation.
• Ultra-Low Quiescent Current: 50.5 µA typical, enhancing efficiency in battery-powered systems.
• Exceptional PSRR: 85dB at 120Hz, reducing noise in sensitive analog circuits.
• Wide Adjustable Output Range: 0V to 14V, enabling flexible design configurations.
• Advanced Protection: Includes over-current, over-temperature, and short-circuit protection for reliability.
• Low Dropout Voltage: 0.42V at 3A, minimizing power dissipation.
• Surface-Mount DFN Package: Optimized for space-constrained PCB designs.

LT3083EDF Applications

The LT3083EDF is ideal for:

• Industrial Power Supplies: Where stable, high-current regulation is critical.
• Telecom Infrastructure: For noise-sensitive RF and baseband circuits.
• Battery-Powered Devices: Due to its low quiescent current and high efficiency.
• Test & Measurement Equipment: Requiring precise voltage control.
• Automotive Electronics: In non-critical subsystems needing robust protection.

Conclusion of LT3083EDF

The LT3083EDF stands out for its high current capability, low dropout, and superior PSRR, making it a preferred choice for precision power applications. While obsolete, its performance metrics—such as 3A output, 0V adjustability, and robust protection—ensure it remains relevant in legacy designs. Engineers seeking a reliable, high-performance LDO for industrial, telecom, or portable applications may still find value in this regulator.