1. Products
  2. Power Management
  3. Switching Regulators
  4. Ultralow Noise Regulators
  5. LTM8028

Data Sheet
PDF
CN | JP
User Guide
1 View All

Overview

Features and Benefits

  • High Performance 5A Linear Regulator with Switching Step-Down Converter for High Efficiency
  • Digitally Programmable VOUT: 0.8V to 1.8V
  • Input Voltage Range: 6V to 36V
  • Very Tight Tolerance Over Temperature, Line, Load and Transient Response
  • Low Output Noise: 40μVRMS (10Hz to 100kHz)
  • Parallel Multiple Devices for 10A or More
  • Accurate Programmable Current Limit to Allow Asymmetric Power Sharing
  • Analog Output Margining: ±10% Range
  • Synchronization Input
  • Stable with Low ESR Ceramic Output Capacitors
  • 15mm × 15mm × 4.92mm Surface Mount BGA Package
  • SnPb or RoHS Compliant Finish

Product Details

The LTM8028 is a 36VIN, 5A μModule® (power module) regulator, consisting of an UltraFast™ 5A linear regulator preceded by a high efficiency switching regulator. In addition to providing tight output regulation, the linear regulator automatically controls the output voltage of the switcher to provide optimal efficiency and headroom for dynamic response.

The output voltage is digitally selectable in 50mV increments over a 0.8V to 1.8V range. An analog margining function allows the user to adjust system output voltage over a continuous ±10% range, and a single-ended feedback sense line may be used to mitigate IR drops due to parasitic resistance.

The LTM8028 is packaged in a compact (15mm × 15mm × 4.92mm) overmolded ball grid array (BGA) package suitable for automated assembly by standard surface mount equipment. The LTM8028 is available with SnPb (BGA) or RoHS compliant terminal finish.

Applications

  • FPGA and DSP Supplies
  • High Speed I/O
  • ASIC and Microprocessor Supplies
  • Servers and Storage Devices

Product Categories

Markets and Technologies

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 (14)
  • Data Sheet (1)
  • Reliability Data (1)
  • User Guide (1)
  • Design Note (1)
  • Product Selector Card (2)
  • Informational (1)
  • Video (3)
  • Technical Article (3)
  • Webcast (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

    LTM8028 Demo Circuit - Low Output Noise, 1.8V, 5A Buck Regulator (6-36V to 1.8V @ 5A)

    Models for the following parts are available in LTspice:

    LTM8028

    Product Recommendations

    LTM8028 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
    LTM8028EY#PBF Material Declaration Reliability Data 114-Lead BGA (15mm x 15mm x 4.92mm)
    LTM8028IY Material Declaration Reliability Data 114-Lead BGA (15mm x 15mm x 4.92mm)
    LTM8028IY#PBF Material Declaration Reliability Data 114-Lead BGA (15mm x 15mm x 4.92mm)
    LTM8028MPY Material Declaration Reliability Data 114-Lead BGA (15mm x 15mm x 4.92mm)
    LTM8028MPY#PBF Material Declaration Reliability Data 114-Lead BGA (15mm x 15mm x 4.92mm)
    Wafer Fabrication Data R598 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
    • LTM8028EY#PBF Production
    • LTM8028IY Production
    • LTM8028IY#PBF Production
    • LTM8028MPY Production
    • LTM8028MPY#PBF Production

    Support & Discussions

    LTM8028 Contact ADI Technical Support »
    LTM8028 Ask your question »
    LTM8028 Contact ADI Technical Support » LTM8028 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


    A Sample link will be shown above, next to the part, only for parts that are included in our sample program. Selecting the Sample button 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.

    •