Data Sheet
JP
User Guides
2 View All

Overview

Features and Benefits

  • Low Noise: 20μVRMS (Positive) and 30μVRMS (Negative)
  • Low Quiescent Current: 30μA/Channel
  • Wide Input Voltage Range: ±2.3V to ±20V
  • Output Current: ±150mA
  • Low Shutdown Current: <3μA Total (Typical)
  • Low Dropout Voltage: 300mV/Channel
  • Fixed Output Voltages: ±3.3V, ±5V, ±12V, ±15V
  • Adjustable Outputs from ±1.22V to ±20V
  • No Protection Diodes Needed
  • Stable with 2.2μF Output Capacitors
  • Stable with Ceramic, Tantalum or Aluminum Capacitors
  • Starts into Reverse Output Voltage
  • Current Limit and Thermal Limit
  • Low Profile 14-Lead 4mm × 3mm × 0.75mm DFN Package

Product Details

The LT3032 is a dual, low noise, positive and negative low dropout voltage linear regulator. Each regulator delivers up to 150mA with a typical 300mV dropout voltage. Each regulator’s quiescent current is low (30μA operating and <3μA in shutdown) and well-controlled in dropout, making it an excellent choice for battery-powered circuits.

Another key feature of the LT3032 is low output noise. Adding an external 10nF bypass capacitor to each regulator reduces output noise to 20μVRMS/30μVRMS over a 10Hz to 100kHz bandwidth. The LT3032 is stable with minimum output capacitors of 2.2μF. The regulators do not require the addition of ESR as is common with other regulators.

The regulators are offered as adjustable output devices with an output voltage down to the ±1.22V reference voltage or in fixed voltages of ±3.3V, ±5V, ±12V and ±15V. Internal protection circuitry includes reverse-output protection, current limiting and thermal limiting.

The LT3032 is available in a unique low profile 14-lead 4mm × 3mm × 0.75mm DFN package with exposed backside pads for each regulator, allowing optimum thermal performance.

Applications

  • Battery-Powered Instruments
  • Bipolar Power Supplies
  • Low Noise Power Supplies

Product Categories

Markets and Technologies

Comparable Parts Click to see all in Parametric Search

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 (2)

Documentation & Resources

  • View All (12)
  • 3rd Party Solutions (3)
  • Data Sheets (1)
  • Reliability Data (1)
  • User Guides (2)
  • Product Selection Guide (1)
  • Solutions Bulletins & Brochures (1)
  • Press Releases (2)
  • Technical Articles (1)
    • Document Type

    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

    LTspice Simulations

    LTC3261/LT3032 Demo Circuit - Dual Polarity Low Noise Power Supply from a Single Input Supply (4.5-20V to ±3.3V @ 20mA)
    LT3032 Demo Circuit - Dual 150mA Positive/Negative Low Noise LDO Linear Regulator (5V to 3.3V @ 0.15A & -5V to -3.3V @ 0.15A)

    Models for the following parts are available in LTspice:

    LT3032
    LT3032-5

    Reference Designs (1)

    Product Recommendations

    LT3032 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.

    LT3032 SERIES Material Declaration
    Quality And Reliability
    Symbols and Footprints

    Support & Discussions

    LT3032 Discussions

    RE: LT3032 Footprint
    All LT3032 Discussions
    LT3032 Contact ADI Technical Support »
    LT3032 Ask your question »
    LT3032 Contact ADI Technical Support » LT3032 Ask your question »

    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.

     

    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.