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  5. LTM8028

Data Sheet
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User Guides
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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

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Evaluation Kits (1)

Documentation & Resources

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  • Data Sheets (1)
  • Reliability Data (1)
  • User Guides (1)
  • Design Notes (1)
  • Product Selector Card (2)
  • Informational (1)
  • Videos (3)
  • Press Releases (1)
  • Technical Articles (3)
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    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

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    Select Model for PCN Information
    • LTM8028EY#PBF Production
    • LTM8028IY Production
    • LTM8028IY#PBF Production
    • LTM8028MPY Production
    • LTM8028MPY#PBF Production

    Support & Discussions

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