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.


  • Battery-Powered Instruments
  • Bipolar Power Supplies
  • Low Noise 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 (2)

Documentation & Resources

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  • 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)
  • 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.

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    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.


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    Reference Designs (1)

    Product Recommendations

    LT3032 Companion Parts

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