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  2. Power Management
  3. LDO Linear Regulators
  4. Positive Linear Regulators (LDO)
  5. LTC3026

Data Sheet
JP
User Guides
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Overview

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.

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

Applications

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

Product Categories

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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)

Documentation & Resources

  • View All (6)
  • Data Sheets (1)
  • Reliability Data (1)
  • User Guides (1)
  • Solutions Bulletins & Brochures (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

    LTC3026 Demo Circuit - Low Input Voltage Linear Regulator (1.14-3.5V to 1.2V @ 1A)
    LTC3026 Demo Circuit - Using a Single Boost Converter to Drive Multiple Linear Regulators (1.6-3.5V to 1.8V/1.5V @ 1.5A)

    Models for the following parts are available in LTspice:

    LTC3026
    LTC3026-1

    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.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
    LTC3026EDD#PBF Material Declaration Reliability Data 10-Lead DFN (3mm x 3mm w/ EP)
    LTC3026EDD#TRPBF Material Declaration Reliability Data 10-Lead DFN (3mm x 3mm w/ EP)
    LTC3026EMSE#PBF Material Declaration Reliability Data 10-Lead MSOP w/ EP
    LTC3026EMSE#TRPBF Material Declaration Reliability Data 10-Lead MSOP w/ EP
    LTC3026IDD#PBF Material Declaration Reliability Data 10-Lead DFN (3mm x 3mm w/ EP)
    LTC3026IDD#TRPBF Material Declaration Reliability Data 10-Lead DFN (3mm x 3mm w/ EP)
    LTC3026IMSE#PBF Material Declaration Reliability Data 10-Lead MSOP w/ EP
    LTC3026IMSE#TRPBF Material Declaration Reliability Data 10-Lead MSOP w/ EP
    Wafer Fabrication Data R415 Reliability Data

    PCN-PDN Information

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

    Select Model for PCN Information
    • LTC3026EMSE#PBF Production
    • LTC3026EMSE#TRPBF Production
    • LTC3026IMSE#PBF Production
    • LTC3026IMSE#TRPBF Production

    Support & Discussions

    LTC3026 Discussions

    RE: LTC3026 BST for how many others LTC3026 ?
    All LTC3026 Discussions
    LTC3026 Contact ADI Technical Support »
    LTC3026 Ask your question »
    LTC3026 Contact ADI Technical Support » LTC3026 Ask your question »

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