1. Products
  2. Power Management
  3. Switching Regulators
  4. Step-Down (Buck) Regulators
  5. Buck Regulator Plus LDO
  6. LT3380

Data Sheet Rev. B
PDF
JP
User Guides Rev. 0
1 View All

Overview

Features and Benefits

  • Quad I2C Adjustable High Efficiency Step-Down DC/DC Converters: 2.5A, 2.5A, 1.5A, 1.5A
  • Three 300mA LDO Regulators (Two Adjustable)
  • Independent Enable Pin-Strap or I2C Sequencing
  • Programmable Autonomous Power-Down Control
  • Warnings and Faults
  • IRQ Pin and IRQ Status Register
  • Power Good Pin and Status Register
  • 150°C TJ Operation (LT3380H)
  • Dynamic Voltage Scaling
  • Selectable 2.25MHz or 1.12MHz Switching Frequency
  • 12µA Standby Current
  • Side Wettable 40-Lead 6mm × 6mm QFN Package
  • AEC-Q100 Qualified for Automotive Applications

Product Details

The LT3380 is a complete power management solution for advanced portable application processor-based systems. The device contains four synchronous step-down DC/DC converters for core, memory, I/O, and system onchip (SoC) rails and three 300mA LDO regulators for low noise analog supplies. An I2C serial port may be used to control regulator enables, power-down sequencing, output voltage levels, dynamic voltage scaling, operating modes, and status reporting.

Regulator start-up is sequenced by connecting outputs to enable pins in the desired order or via the I2C port. The LT3380 outputs may be sequenced off in one of four time slots selected using I2C command registers.

The device is available in a 40-lead 6mm × 6mm QFN with wettable flanks for optical inspection.

APPLICATIONS

  • Automotive
  • Industrial
  • Communications
  • General Purpose Multichannel Power Supplies

Product Categories

Comparable Parts Click to see all in Parametric Search

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 (1)

Documentation & Resources

  • View All (2)
  • Data Sheets (1)
  • User Guides (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.

    LTspice

    Models for the following parts are available in LTspice:

    LT3380

    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
    LT3380EUJM#PBF Material Declaration Reliability Data 40-Lead QFN (6mm x 6mm, Plastic Side Wettable)
    LT3380EUJM#TRPBF Material Declaration Reliability Data 40-Lead QFN (6mm x 6mm, Plastic Side Wettable)
    LT3380HUJM#PBF Material Declaration Reliability Data 40-Lead QFN (6mm x 6mm, Plastic Side Wettable)
    LT3380HUJM#TRPBF Material Declaration Reliability Data 40-Lead QFN (6mm x 6mm, Plastic Side Wettable)
    LT3380HUJM#WPBF Material Declaration Reliability Data 40-Lead QFN (6mm x 6mm, Plastic Side Wettable)
    LT3380HUJM#WTRPBF Material Declaration Reliability Data 40-Lead QFN (6mm x 6mm, Plastic Side Wettable)
    LT3380IUJM#PBF Material Declaration Reliability Data 40-Lead QFN (6mm x 6mm, Plastic Side Wettable)
    LT3380IUJM#TRPBF Material Declaration Reliability Data 40-Lead QFN (6mm x 6mm, Plastic Side Wettable)
    LT3380IUJM#WPBF Material Declaration Reliability Data 40-Lead QFN (6mm x 6mm, Plastic Side Wettable)
    LT3380IUJM#WTRPBF Material Declaration Reliability Data 40-Lead QFN (6mm x 6mm, Plastic Side Wettable)
    Wafer Fabrication Data

    Support & Discussions

    LT3380 Contact ADI Technical Support »
    LT3380 Ask your question »
    LT3380 Contact ADI Technical Support » LT3380 Ask your question »

    Sample & Buy


    Ordering FAQs


    See our Ordering FAQs for answers to questions about online orders, payment options and more.

     

    Buy Now Pricing


    (**) Displayed Buy Now Price and Price Range is based on small quantity orders.

     

    List Pricing


    (*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

     

    Lead Times


    Please see the latest communication from our CCO regarding lead times.

     

    Sampling


    Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.


    Price Table Help

     

    Evaluation Boards

    Pricing displayed is based on 1-piece.

    Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

    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.

    •