1. Products
  2. Power Management
  3. Battery Management
  4. PMIC (DC/DC, PowerPath, and Battery Charger)
  5. LTC3455

Data Sheet
PDF
JP
User Guide
2 View All

Overview

Features and Benefits

  • Seamless Transition between Input Power Sources:
    • Li-Ion Battery,
    • USB, and
    • 5V Wall Adapter
  • Accurate USB Current Limiting (500mA/100mA)
  • Two High Efficiency DC/DC Converters: Up to 96%
  • Thermal Regulation Maximizes Battery Charge Rate without Risk of Overheating
  • Full-Featured Li-Ion Battery Charger with 4.2V Float Voltage for LTC3455 and 4.1V for LTC3455-1
  • 4.1V Float Voltage (LTC3455-1) Improves Battery Life and High Temperature Safety Margin
  • Hot Swap™ Output for SDIO and Memory Cards
  • Pin-Selectable Burst Mode® Operation
  • Output Disconnect: All Outputs Discharged to Ground During Shutdown
  • Available in a 4mm × 4mm × 0.75mm 24-Pin QFN Package

Product Details

The LTC3455/LTC3455-1 are complete power management solutions for a variety of portable applications. These devices contain two synchronous step-down DC/DC converters, a USB power controller, a full-featured Li-Ion battery charger, a Hot Swap output, a low-battery indicator, and numerous internal protection features. The LTC3455/LTC3455-1 provide a small, simple solution for obtaining power from three different power sources: a single-cell Li-Ion battery, a USB port, and a wall adapter. Current drawn from the USB bus is accurately limited under all conditions. Whenever a USB or a wall adapter is present, the battery charger is enabled and all internal power for the device is drawn from the appropriate external power source. All outputs are discharged to ground during shutdown to provide complete output disconnect. These devices are available in a 4mm × 4mm 24-pin exposed-pad QFN package.

Applications

  • Handheld Computers
  • Digital Cameras
  • MP3 Players

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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 (2)

Documentation & Resources

  • View All (7)
  • Data Sheet (1)
  • Reliability Data (1)
  • User Guide (2)
  • Design Note (1)
  • Technical Article (2)
    • Document Type

    Product Recommendations

    LTC3455 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
    LTC3455EUF#PBF Material Declaration Reliability Data 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)
    LTC3455EUF#TRPBF Material Declaration Reliability Data 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)
    LTC3455EUF-1#PBF Material Declaration Reliability Data 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)
    LTC3455EUF-1#TRPBF Material Declaration Reliability Data 24-Lead QFN (4mm x 4mm x 0.75mm 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
    • LTC3455EUF#PBF Last Time Buy
    • LTC3455EUF#TRPBF Last Time Buy
    • LTC3455EUF-1#PBF Last Time Buy
    • LTC3455EUF-1#TRPBF Last Time Buy

    Support & Discussions

    LTC3455 Discussions

    RE: Help for design of a battery management system
    All LTC3455 Discussions
    LTC3455 Contact ADI Technical Support »
    LTC3455 Ask your question »
    LTC3455 Contact ADI Technical Support » LTC3455 Ask your question »

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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.

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