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ADP2118:  3 A, 1.2 MHz/600 kHz High Efficiency Synchronous Step-Down DC-to-DC Regulator

Product Details


The ADP2118 is a low quiescent current, synchronous, step-down, dc-to-dc regulator in a compact 4mm × 4mm LFCSP_WQ package. It uses a current mode, constant frequency pulse-width modulation (PWM) control scheme for excellent stability and transient response. Under light loads, the ADP2118 can be configured to operate in pulse frequency modulation (PFM) mode that reduces switching frequency to save power.

The ADP2118 runs from input voltages of 2.3 V to 5.5 V. The output voltage of the ADP2118ACPZ-R7 is adjustable from 0.6 V to input voltage (VIN), and the ADP2118ACPZ-x.x-R7 are available in preset output voltage options of 3.3 V, 2.5 V, 1.8 V, 1.5 V, 1.2 V, and 1.0 V. The ADP2118 requires minimal external parts and provides a high efficiency solution with its integrated power switch, synchronous rectifier, and internal compensation. The IC draws less than 3 μA from the input source when it is disabled. Other key features include undervoltage lockout (UVLO), integrated soft start to limit inrush current at startup, overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown (TSD).

Applications
  • Point of load conversion
  • Communications and networking equipments
  • Industrial and instrumentation
  • Consumer electronics
  • Medical appliances
  • FEATURES and BENEFITS

    • Chinese data sheet available
    • 3A continuous output current
    • 75 mΩ and 40 mΩ integrated FET
    • ±1.5 % Output Accuracy
    • Input voltage range from 2.3 V to 5.5 V
    • Output Voltage from 0.6V to VIN
    • 600kHz or 1.2MHz fixed switching frequency
    • Synchronizable between 600kHz and 1.4MHz
    • Selectable Synchronize Phase Shift: 0° or 180°
    • Selectable PWM or PFM Mode operation
    • Current Mode Architecture
    • Precision enable input
    • See data sheet for additional features

    Typical Application Diagram for ADP2118

    Documentation

    Title Content Type File Type
    ADP2118: 3 A, 1.2 MHz/600 kHz High Efficiency Synchronous Step-Down DC-to-DC Regulator Data Sheet (Rev C, 11/2012) (pdf, 1240 kB) Data Sheets PDF
    ADP2118 3A Step-Down DC-DC Regulator
    The ADP2118 is a high efficiency synchronous step down regulator targeting point of load applications. Key features include extreme compact solution size, ease of use, design flexibility and system reliability.
    Videos HTML
    Understanding How Voltage Regulators Work Technical Articles HTML
    Glossary of EE Terms Glossary HTML

    Design Tools,Models,Drivers & Software

    Title Content Type File Type
    ADP21xx Buck Regulator Design Tool  (zip, 0)
    Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.
    ADIsim Design/Simulation Tools ZIP
    Download files for ADIsimPower™ Voltage Regulator Design Tool
    The individual Excel-based voltage regulator design tools used in ADIsimPower™.
    ADIsim Design/Simulation Tools HTML
    ADIsimPower™ Voltage Regulator Design Tool
    This expert design tool produces custom DC-DC converter designs in about a minute. The user enters 5 inputs and chooses to optimize for efficiency, PCB space, cost, or part count. Output is a complete schematic, BOM, efficiency plot, and performance summary. A PDF summary and a blank PCB is offered for each design to facilitate fast prototyping to verify the design.
    ADIsim Design/Simulation Tools HTML
    Launch of ADIsimPower Voltage Regulator Selection Vin (min) V Vout V   Find Solutions
    Vin (max) V Iout A

    Evaluation Kits & Symbols & Footprints

    Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

    Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

    SampleSample & Buy

    Price, packaging, availability

    ADP2118 Model Options
    Model Package Pins Temp.
    Range
    Packing,
    Qty
    Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
    Purchase/Sample
    ADP2118ACPZ-1.0-R7 Status: Production 16 ld LFCSP (4x4mm, 2.5mm exposed pad) 16 Ind Reel, 1500 - $1.43 Y  Material Info PCN Purchase Sample
    ADP2118ACPZ-1.2-R7 Status: Production 16 ld LFCSP (4x4mm, 2.5mm exposed pad) 16 Ind Reel, 1500 - $1.43 Y  Material Info PCN Purchase Sample
    ADP2118ACPZ-1.5-R7 Status: Production 16 ld LFCSP (4x4mm, 2.5mm exposed pad) 16 Ind Reel, 1500 - $1.43 Y  Material Info PCN Purchase Sample
    ADP2118ACPZ-1.8-R7 Status: Production 16 ld LFCSP (4x4mm, 2.5mm exposed pad) 16 Ind Reel, 1500 - $1.43 Y  Material Info PCN Purchase Sample
    ADP2118ACPZ-2.5-R7 Status: Production 16 ld LFCSP (4x4mm, 2.5mm exposed pad) 16 Ind Reel, 1500 - $1.43 Y  Material Info PCN Purchase Sample
    ADP2118ACPZ-3.3-R7 Status: Production 16 ld LFCSP (4x4mm, 2.5mm exposed pad) 16 Ind Reel, 1500 - $1.43 Y  Material Info PCN Purchase Sample
    ADP2118ACPZ-R2 Status: Production LFCSP:LEADFRM CHIP SCALE 16 Ind Reel, 250 - - Y  Material Info PCN Purchase
    ADP2118ACPZ-R7 Status: Production 16 ld LFCSP (4x4mm, 2.5mm exposed pad) 16 Ind Reel, 1500 - $1.43 Y  Material Info PCN Purchase Sample
    Price Table Help

    The USA 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. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

    ADP2118 Evaluation Board
    Model Description Price RoHS View PCN/ PDN Check Inventory/
    Purchase/Sample
    ADP2118-EVALZ Status: Production Evaluation Board $60.00 Yes -

    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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