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  4. LTC3105


Overview

Features and Benefits

  • Low Start-Up Voltage: 250mV
  • Maximum Power Point Control
  • Wide VIN Range: 225mV to 5V
  • Auxiliary 6mA LDO Regulator
  • Burst Mode® Operation: IQ = 24μA
  • Output Disconnect and Inrush Current Limiting
  • VIN > VOUT Operation
  • Antiringing Control
  • Soft Start
  • Automatic Power Adjust
  • Power Good Indicator
  • 10-Lead 3mm × 3mm × 0.75mm DFN and 12-Lead MSOP Packages

Product Details

The LTC3105 is a high efficiency step-up DC/DC converter that can operate from input voltages as low as 225mV. A 250mV start-up capability and integrated maximum power point controller (MPPC) enable operation directly from low voltage, high impedance alternative power sources such as photovoltaic cells, TEGs (thermoelectric generators) and fuel cells. A user programmable MPPC set point maximizes the energy that can be extracted from any power source. Burst Mode operation, with a proprietary self adjusting peak current, optimizes converter efficiency and output voltage ripple over all operating conditions.

The AUX powered 6mA LDO provides a regulated rail for external microcontrollers and sensors while the main output is charging. In shutdown, IQ is reduced to 10μA and integrated thermal shutdown offers protection from overtemperature faults. The LTC3105 is offered in 10-lead 3mm × 3mm × 0.75mm DFN and 12-lead MSOP packages.

Applications

  • Solar Powered Battery/Supercapacitor Chargers
  • Energy Harvesting
  • Remote Industrial Sensors
  • Low Power Wireless Transmitters
  • Cell Phone, MP3, PMP and GPS Accessory Chargers

Product Categories

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 (3)

Documentation & Resources

  • View All (16)
  • Data Sheets (1)
  • Reliability Data (1)
  • User Guides (3)
  • Product Selector Card (2)
  • Solutions Bulletins & Brochures (1)
  • Technical Articles (4)
  • Videos (2)
  • Design Notes (1)
  • Press Releases (1)
  • Tools & Simulations

    LTspice

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    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

    Models for the following parts are available in LTspice:

    LTC3105

    Product Recommendations

    LTC3105 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
    LTC3105EDD#PBF Material Declaration Reliability Data 10-Lead DFN (3mm x 3mm w/ EP)
    LTC3105EDD#TRPBF Material Declaration Reliability Data 10-Lead DFN (3mm x 3mm w/ EP)
    LTC3105EMS#PBF Material Declaration Reliability Data 12-Lead MSOP
    LTC3105EMS#TRPBF Material Declaration Reliability Data 12-Lead MSOP
    Wafer Fabrication Data R415 Reliability Data

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    Sample & Buy


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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.