Features and Benefits

  • Input Voltage Range:
    • 1.14V to 3.5V (with Boost Enabled)
    • 1.14V to 3.5V (with Boost Enabled)
  • Low Dropout Voltage: 100mV at IOUT = 1.5A
  • Adjustable Output Range: 0.4V to 2.6V
  • Output Current: Up to 1.5A
  • Excellent Supply Rejection Even Near Dropout
  • Shutdown Disconnects Load from VIN and VBST
  • Low Operating Current: IIN = 950µA at VIN = 1.5V
  • Low Shutdown Current:
    • IIN < 1µA (Typ)
    • IBST = 0.1µA (Typ)
  • Stable with 10µF or Greater Ceramic Capacitors
  • Short-Circuit, Reverse Current Protected
  • Overtemperature Protected
  • Available in 10-Lead MSOP and 10-Lead (3mm × 3mm) DFN Packages

Product Details

The LTC3026 is a very low dropout (VLDO) linear regulator that can operate at input voltages down to 1.14V. The device is capable of supplying 1.5A of output current with a typical dropout voltage of only 100mV. To allow operation at low input voltages the LTC3026 includes a boost converter that provides the necessary headroom for the internal LDO circuitry.

Output current comes directly from the input supply to maximize efficiency. The boost converter requires only a small chip inductor and ceramic capacitor for operation. Additionally, the boosted output voltage of one LTC3026 can supply the boost voltage for other LTC3026s, thus requiring a single inductor for multiple LDOs. A user supplied boost voltage can be used eliminating the need for an inductor altogether.

The LTC3026 regulator is stable with 10μF or greater ceramic output capacitors. The device has a low 0.4V reference voltage which is used to program the output voltage via two external resistors. The device also has internal current limit, overtemperature shutdown, and reverse output current protection. The LTC3026 is available in a small 10-lead MSOP or low profile (0.75mm) 10-lead 3mm × 3mm DFN package.

LTC3026 Integrated boost converter
LTC3026-1 Boost converter internally disabled and required an external 5V supply to operate


  • High Efficiency Linear Regulator
  • Post Regulator for Switching Supplies
  • Microprocessor Supply

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

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:



LTpowerCAD® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.


Design tools for the following parts are available in LTpowerCAD:


Reference Designs (11)

Product Recommendations

LTC3026 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.

PCN-PDN Information

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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.