1. Products
  2. Power Management
  3. LDO Linear Regulators
  4. Positive Linear Regulators (LDO)
  5. LT3080-1


Alternative Parts

Overview

Features and Benefits

  • Internal Ballast Resistor Permits Direct Connection to Power Plane for Higher Current and Heat Spreading
  • Output Current: 1.1A
  • Single Resistor Programs Output Voltage
  • 1% Initial Accuracy of SET Pin Current
  • Output Adjustable to 0V
  • Low Output Noise: 40μVRMS (10Hz to 100kHz)
  • Wide Input Voltage Range: 1.2V to 36V
  • Low Dropout Voltage: 300mV
  • <0.001%/V Line Regulation
  • Minimum Load Current: 0.5mA
  • Stable with 2.2μF Minimum Ceramic Output Capacitor
  • Current Limit with Foldback and Overtemperature Protected
  • Available in 8-Lead MSOP and 3mm × 3mm DFN

Product Details

The LT3080-1 is a 1.1A low dropout linear regulator that incorporates an internal ballast resistor to allow direct paralleling of devices without the need for PC board trace resistors. The internal ballast resistor allows multiple devices to be paralleled directly on a surface mount board for higher output current and power dissipation while keeping board layout simple and easy. The device brings out the collector of the pass transistor to allow low dropout operation—down to 350mV—when used with multiple input supplies.

The LT3080-1 is capable of supplying a wide output voltage range. A reference current through a single resistor programs the output voltage to any level between zero and 36V. The LT3080-1 is stable with 2.2μF of ceramic capacitance on the output, not requiring additional ESR as is common with other regulators.

Internal protection includes current limiting and thermal limiting. The LT3080-1 regulator is offered in the 8-lead MSOP (with an Exposed Pad for better thermal characteristics) and 3mm × 3mm DFN packages.


Features
LT3080 -
LT3080-1 Can parallel without additional external resistance

Applications

  • High Current All Surface Mount Supply
  • High Efficiency Linear Regulator
  • Post Regulator for Switching Supplies
  • Low Parts Count Variable Voltage Supply
  • Low Output Voltage Power Supplies

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (1)

Tools & Simulations

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

LTspice

Models for the following parts are available in LTspice:

LT3080
LT3080-1

Reference Designs (9)

Product Recommendations

LT3080-1 Companion Parts

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
LT3080EDD-1#PBF Material Declaration Reliability Data 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP)
LT3080EDD-1#TRPBF Material Declaration Reliability Data 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP)
LT3080EMS8E-1#PBF Material Declaration Reliability Data 8-Lead MSOP w/ EP
LT3080EMS8E-1#TRPBF Material Declaration Reliability Data 8-Lead MSOP w/ EP
LT3080IDD-1#PBF Material Declaration Reliability Data 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP)
LT3080IDD-1#TRPBF Material Declaration Reliability Data 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP)
LT3080IMS8E-1#PBF Material Declaration Reliability Data 8-Lead MSOP w/ EP
LT3080IMS8E-1#TRPBF Material Declaration Reliability Data 8-Lead MSOP w/ EP
Wafer Fabrication Data R531 Reliability Data

PCN-PDN Information

Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.

Sample & Buy


Ordering FAQs


See our Ordering FAQs for answers to questions about online orders, payment options and more.

 

Buy Now Pricing


(**) Displayed Buy Now Price and Price Range is based on small quantity orders.

 

List Pricing


(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

 

Lead Times


Please see the latest communication from our CCO regarding lead times.

 

Sampling


Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.


Price Table Help

 

Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.