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  5. LTM4661

Data Sheet Rev. A
JP Rev. A
User Guides
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Overview

Features and Benefits

  • Complete Solution in <1cm2 (Single-Sided PCB) or 0.5cm2 (Dual-Sided PCB)
  • Input Voltage Range: 1.8V to 5.5V, Down to 0.7V After Start-Up
  • Output Voltage Range: 2.5V to 15V
  • 4A Switch Current
  • Dual Phase Operation
  • ±3% Maximum Total DC Output Voltage Regulation Over Load, Line and Temperature
  • Output Disconnect in Shut Down
  • Inrush Current Limit
  • External Frequency Synchronization
  • Selectable Burst Mode® Operation
  • Output Overvoltage and Overtemperature Protection
  • 6.25mm × 6.25mm × 2.42mm BGA package

Product Details

The LTM4661 is a synchronous step-up switching mode μModule® (power module) regulator in a 6.25mm × 6.25mm × 2.42mm BGA package. Included in the package are the switching controller, power FETs, inductor and all support components. Operating over an input voltage of 1.8V to 5.5V, down to 0.7V after start-up, the LTM4661 regulates an output voltage of 2.5V to 15V set by an external resistor. It provides up to 4A switch current. Only bulk input and output capacitors are needed.

The LTM4661 1MHz switching frequency and dual phase single output architecture enable fast transient response to line and load changes and a significant reduction of output ripple voltage. It supports frequency synchronization, PolyPhase® operation and selectable Burst Mode operation. The LTM4661 features a true output disconnect during shutdown and inrush current limit at start-up. It also has short-circuit, overvoltage and overtemperature protection.

The LTM4661 is Pb-free and RoHS compliant.

Applications

  • RF Microwave Power Amplifiers
  • Battery Powered DC Motors
  • 3.3V Bus Telecom Transceivers

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Evaluation Kits (1)

Documentation & Resources

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  • Data Sheets (1)
  • Reliability Data (1)
  • User Guides (1)
  • Informational (1)
  • Press Releases (2)
  • Technical Articles (1)
    • Document Type

    Tools & Simulations

    LTspice

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    Product Recommendations

    LTM4661 Companion Parts

    Recommended Related Parts

    Design Resources

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    Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
    LTM4661EY#PBF Material Declaration Reliability Data 25-Lead BGA (6.25mm x 6.25mm x 2.42mm)
    LTM4661IY Material Declaration Reliability Data 25-Lead BGA (6.25mm x 6.25mm x 2.42mm)
    LTM4661IY#PBF Material Declaration Reliability Data 25-Lead BGA (6.25mm x 6.25mm x 2.42mm)
    Wafer Fabrication Data R504 Reliability Data

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    Select Model for PCN Information
    • LTM4661EY#PBF Production
    • LTM4661IY Production
    • LTM4661IY#PBF Production

    Support & Discussions

    LTM4661 Discussions

    RE: LTM4661: Start-up overvoltage observed in LTSpice
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    LTM4661 Contact ADI Technical Support »
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    LTM4661 Contact ADI Technical Support » LTM4661 Ask your question »

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