**LT3080EDD#TRPBF: A Comprehensive Guide to Analog Devices' Adjustable Linear Regulator**
The **LT3080EDD#TRPBF** from Analog Devices represents a significant advancement in linear regulator technology, offering engineers a highly versatile and robust solution for a wide range of power management applications. Unlike conventional three-terminal regulators, the LT3080 is a **low dropout, adjustable linear regulator** that operates from a single supply as low as 1.2V and can deliver up to 1.1A of output current. Its unique architecture, based on a **current reference and voltage follower**, provides unparalleled flexibility and performance.
A key differentiator of the LT3080 is its **adjustable output voltage range from 0V to VIN – VDROP**. This capability to start at 0V is crucial for powering modern low-voltage core logic, ASICs, and other sensitive circuits that require a controlled voltage ramp-up from zero. The device utilizes a **10µA precision current reference** to set the output voltage via a single external resistor. This simple setup, where VOUT = ISET × RSET, eliminates the need for complex feedback networks and provides excellent line and load regulation.
The **LT3080EDD#TRPBF** is offered in a DFN-8 package, which is ideal for space-constrained applications. Its low dropout voltage, typically 220mV at 500mA and 350mV at 1A, ensures high efficiency even when the input voltage is only marginally higher than the output. Furthermore, the regulator incorporates **built-in protection features** including internal current limiting, thermal shutdown, and reverse battery protection, enhancing system reliability under fault conditions.
A major advantage of this architecture is its ability to be easily paralleled. By connecting the SET pins of multiple LT3080s together, designers can **increase the total output current** while sharing the load evenly, without the need for ballast resistors. This makes it an excellent choice for creating scalable, high-current power supplies. Additionally, its wide input voltage range (up to 36V) and ability to withstand reverse voltages make it exceptionally rugged.
The device is also designed for ease of use in precision applications. It features **low output noise and high PSRR** (Power Supply Rejection Ratio), making it suitable for powering noise-sensitive analog and RF circuits. Whether used in industrial control systems, automotive electronics, test and measurement equipment, or as a post-regulator for switching supplies, the LT3080 provides a clean, stable, and reliable output.
**ICGOO**D**FIND**: The Analog Devices **LT3080EDD#TRPBF** stands out as an exceptionally flexible and robust linear regulator. Its unique current-source architecture, ability to start at 0V, simple paralleling for higher current, and comprehensive protection suite make it an indispensable component for designers seeking high performance and reliability in their power management designs.
**Keywords**: Adjustable Linear Regulator, Low Dropout (LDO), Current Reference, Parallelable Regulators, Power Supply Rejection Ratio (PSRR).
