1. Products
  2. Power Management
  3. LDO Linear Regulators
  4. Positive Linear Regulators (LDO)
  5. LT3033


Features and Benefits

  • Single Supply VIN Range: 0.95V to 10V
  • Dropout Voltage: 95mV Typical
  • Output Current: 3A
  • Adjustable Output Voltage: 200mV to 9.7V
  • Single Capacitor Soft-Starts Reference and Lowers Output Noise
  • Stable with Low ESR, Ceramic Output Capacitors
  • 0.075% Typical Load Regulation from 1mA to 3A
  • Quiescent Current: 1.9mA Typical
  • Quiescent Current in Shutdown: 22μA Typical
  • Power Good (PWRGD) Flag (Status Valid in Shutdown)
  • Current Limit Protection with Foldback
  • Programmable Current Limit
  • Output Current Monitor: IOUT/2650
  • Thermal Limiting with Hysteresis
  • Reverse Battery, Reverse Output, and Reverse Current Protection
  • 20-Lead 3mm × 4mm QFN Package

Product Details

The LT3033 is a very low dropout voltage (VLDO) linear regulator that operates from a single input supply down to 0.95V. The device supplies 3A output current with 95mV typical dropout voltage. The LT3033 is ideal for low input voltage to low output voltage applications, providing comparable electrical efficiency to a switching regulator.

The LT3033 optimizes stability and transient response with low ESR ceramic output capacitors as small as 10μF. Other features include programmable current limit, an output current monitor and a power good flag to indicate output voltage regulation. In shutdown, quiescent current typically drops to 22μA. Internal protection circuitry includes reverse-battery protection, current limiting with foldback, thermal limiting with hysteresis and reverse-current protection.

The LT3033 is available as an adjustable device with an output voltage down to the 200mV reference. The device is available in a thermally enhanced, low profile 3mm × 4mm × 0.75mm QFN package.


  • High Efficiency Linear Regulators
  • Battery-Powered Systems
  • Logic Supplies
  • Post Regulator for Switching Supplies
  • Wireless Modems
  • FPGA Core 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® 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.


Models for the following parts are available in LTspice:


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
LT3033EUDC#PBF Material Declaration Reliability Data 20-Lead QFN (3mm x 4mm)
LT3033EUDC#TRPBF Material Declaration Reliability Data 20-Lead QFN (3mm x 4mm)
LT3033IUDC#PBF Material Declaration Reliability Data 20-Lead QFN (3mm x 4mm)
LT3033IUDC#TRPBF Material Declaration Reliability Data 20-Lead QFN (3mm x 4mm)
Wafer Fabrication Data

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.



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.