National Semiconductor | High-performance Analog

 

 LM2853   

3A 550 kHz Synchronous SIMPLE SWITCHER® Buck Regulator
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Features
  • Input voltage range of 3.0V to 5.5V
  • Factory EEPROM set output voltages from 0.8V to 3.3V in 100 mV increments
  • Maximum load current of 3A
  • Voltage Mode Control
  • Internal type-three compensation
  • Switching frequency of 550 kHz
  • Low standby current of 12 µA
  • Internal 40 m MOSFET switches
  • Standard voltage options 0.8/1.0/1.2/1.5/1.8/2.5/3.0/3.3 volts
  • Exposed pad TSSOP-14 package
  • Description

    The LM2853 synchronous SIMPLE SWITCHER® buck regulator is a 550 kHz step-down switching voltage regulator capable of driving up to a 3A load with excellent line and load regulation. The LM2853 accepts an input voltage between 3.0V and 5.5V and delivers a customizable output voltage that is factory programmable from 0.8V to 3.3V in 100mV increments. Internal type-three compensation enables a low component count solution and greatly simplifies external component selection. The exposed-pad TSSOP-14 package enhances the thermal performance of the LM2853.


    Applications

  • Low voltage point of load regulation
  • Local solution for FPGA/DSP/ASIC core power
  • Broadband networking and communications infrastructure
  • WEBENCH® LM2853
        Min   Max   Range  
      VIN V    3.00 – 5.50V  
      VOUT V    0.80 – 3.30V  
      IOUT A    ≤ 3.00A  
      Ambient Temp °C    ≤ 100°C  
    Footprint BOM Cost Efficiency
    What are WEBENCH® tools?


    Also Recommended
    LM20123Full-Featured 3A, 1.5 MHz Switching Frequency
    LM28522A Version, 500kHz Or 1.5MHz Switching Frequency
    LM28544A Version, 500kHz Or 1MHz Switching Frequency



    Typical Application
    click for larger image


    Block Diagram
    click for larger image



    Typical Performance
    *click for larger image


    Parameters / ValuesLM2853 LM20123 LM2852 LM2854
    Output Current3000 mA 3000 mA 2000 mA 4000 mA
    Input Min Voltage3 Volt 2.95 Volt 2.85 Volt 2.95 Volt
    Input Max Voltage5.5 Volt 5.5 Volt 5.5 Volt 5.5 Volt
    Output Min1.8, 1, 2.5, 1.2, 0.8, 3.3, 3, 1.5 Volt 0.8 Volt 1.8, 1, 2.5, 1.2, 0.8, 3.3, 1.5 Volt 0.8 Volt
    Output Max1.8, 1, 2.5, 1.2, 0.8, 3.3, 3, 1.5 Volt 5 Volt 1.8, 1, 2.5, 1.2, 0.8, 3.3, 1.5 Volt 5 Volt
    Frequency Min550 kHz Undefined kHz 500, 1500 kHz 500 kHz
    Frequency Max550 kHz Undefined kHz 500, 1500 kHz 1000 kHz
    Efficiency (peak)95 % 96 % 95 % 98 %
    Integrated InductorNo No No No
    PowerGood / Error FlagNo Yes No No
    SoftStartYes Yes Yes Yes
    Sync PinNo No No No
    InvertingNo Undefined No No
    FlybackNo Undefined No No
    RegTypeSwitching Regulator Switching Regulator Switching Regulator Switching Regulator
    Temperature Min-40 deg C -40 deg C -40 deg C -40 deg C
    Temperature Max125 deg C 125 deg C 125 deg C 85 deg C
    Adjustable OutputNo Yes No Yes
    Adj Switch FrequencyNo No No No
    PWM ModeVoltage Mode Control Current Mode Control Voltage Mode Control Voltage Mode Control
    TopologySynchronous Buck Synchronous Buck Synchronous Buck Synchronous Buck
    Special FeaturesInternal compensation, low standby current Undefined Internal compensation, low standby current Undefined
    Step-DownYes Yes Yes Yes
    Multiple Output CapabilityNo No No No
    Output PowerUndefined Watt Undefined Watt Undefined Watt Undefined Watt
    Output Voltage1.8, 1, 2.5, 1.2, 0.8, 3.3, 3, 1.5 Volt Undefined Volt 1.8, 1, 2.5, 1.2, 0.8, 3.3, 1.5 Volt Undefined Volt
    Output Range1.8, 1, 2.5, 1.2, 0.8, 3.3, 3, 1.5 0.8V to 5.0V 0.8V to 3.3V Undefined
    Switching FrequencyUndefined kHz 1500 kHz 500 kHz Undefined kHz
    Feedback VoltageUndefined Volt 0.8 Volt Undefined Volt Undefined Volt
    On/Off PinYes Yes Yes Yes
    Regulator FamilySIMPLE SWITCHER LM20k SIMPLE SWITCHER SIMPLE SWITCHER
    AEC Q-100 Automotive GradeUndefined Undefined Undefined Undefined
    PowerWiseYes Yes Yes Yes
    Synchronous RectificationYes Yes Yes Yes

    Datasheets
    TitleSizeDateOther
    Language
    LM2853 3A 550 kHz Synchronous SIMPLE SWITCHER® Buck Regulator616
    Kbytes
    25-Oct-06日本語
    中文


    Application Notes
    TitleSizeDateOther
    Language
    AN-1513: Application Note 1513 LM2853 Evaluation Board530
    Kbytes
    30-Oct-06 
    AN-1973: Application Note 1973 Benefits and Challenges of High-Frequency Regulators348
    Kbytes
    25-Jun-09 


    Other Technical Documents
    TitleTypeDate
    Voltage-Mode Control and Compensation: Intricacies for Buck RegulatorsExternal Article 2008-06-30

    Part Number(s)
    (NSID)
    Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM2853MH-0.8/NOPB

    LM2853MH-0.8

    RoHS Status


    TSSOP EXP PAD
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    AVNET-EMWorldwide188
    DIGI-KEYWorldwide0
    MOUSERWorldwide188
    $2.00 each at 1K+ pcsrail
    of
    94
    LM2853MH-1.0/NOPB

    LM2853MH-1.0

    RoHS Status


    TSSOP EXP PAD
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide0
    MOUSERWorldwide98
    $2.00 each at 1K+ pcsrail
    of
    94
    LM2853MH-1.2/NOPB

    LM2853MH-1.2

    RoHS Status


    TSSOP EXP PAD
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide35
    AVNET-EMWorldwide226
    DIGI-KEYWorldwide32
    MOUSERWorldwide124
    NEWARKAmericas279
    TAYLORAmericas35
    $2.00 each at 1K+ pcsrail
    of
    94
    LM2853MH-1.5/NOPB

    LM2853MH-1.5

    RoHS Status


    TSSOP EXP PAD
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    AVNET-EMWorldwide188
    DIGI-KEYWorldwide61
    MOUSERWorldwide168
    $2.00 each at 1K+ pcsrail
    of
    94
    LM2853MH-1.8/NOPB

    LM2853MH-1.8

    RoHS Status


    TSSOP EXP PAD
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide197
    AVNET-EMWorldwide152
    DIGI-KEYWorldwide138
    MOUSERWorldwide153
    NEWARKAmericas151
    TAYLORAmericas197
    $2.00 each at 1K+ pcsrail
    of
    94
    LM2853MH-2.5/NOPB

    LM2853MH-2.5

    RoHS Status


    TSSOP EXP PAD
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide188
    DIGI-KEYWorldwide167
    MOUSERWorldwide180
    TAYLORAmericas188
    $2.00 each at 1K+ pcsrail
    of
    94
    LM2853MH-3.0/NOPB

    LM2853MH-3.0

    RoHS Status


    TSSOP EXP PAD
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    AVNET-EMWorldwide188
    DIGI-KEYWorldwide0
    MOUSERWorldwide188
    $2.00 each at 1K+ pcsrail
    of
    94
    LM2853MH-3.3/NOPB

    LM2853MH-3.3

    RoHS Status


    TSSOP EXP PAD
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide158
    AVNET-EMWorldwide173
    DIGI-KEYWorldwide1144
    MOUSERWorldwide176
    NEWARKAmericas80
    TAYLORAmericas331
    $2.00 each at 1K+ pcsrail
    of
    94
    LM2853MHX-0.8/NOPB

    LM2853MHX-0.8

    RoHS Status


    TSSOP EXP PAD
    Full production
    Lead Time: 8 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $2.00 each at 1K+ pcsreel
    of
    2500
    LM2853MHX-1.0/NOPB

    LM2853MHX-1.0

    RoHS Status


    TSSOP EXP PAD
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $2.00 each at 1K+ pcsreel
    of
    2500
    LM2853MHX-1.2/NOPB

    LM2853MHX-1.2

    RoHS Status


    TSSOP EXP PAD
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $2.00 each at 1K+ pcsreel
    of
    2500
    LM2853MHX-1.5/NOPB

    LM2853MHX-1.5

    RoHS Status


    TSSOP EXP PAD
    Full production
    Lead Time: 8 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $2.00 each at 1K+ pcsreel
    of
    2500
    LM2853MHX-1.8/NOPB

    LM2853MHX-1.8

    RoHS Status


    TSSOP EXP PAD
    Full production
    Lead Time: 8 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $2.00 each at 1K+ pcsreel
    of
    2500
    LM2853MHX-2.5/NOPB

    LM2853MHX-2.5

    RoHS Status


    TSSOP EXP PAD
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide2500
    DIGI-KEYWorldwide0
    TAYLORAmericas2500
    $2.00 each at 1K+ pcsreel
    of
    2500
    LM2853MHX-3.0/NOPB

    LM2853MHX-3.0

    RoHS Status


    TSSOP EXP PAD
    Full production
    Lead Time: 8 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $2.00 each at 1K+ pcsreel
    of
    2500
    LM2853MHX-3.3/NOPB

    LM2853MHX-3.3

    RoHS Status


    TSSOP EXP PAD
    Full production
    Lead Time: 8 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $2.00 each at 1K+ pcsreel
    of
    2500

    All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

    Moisture Sensitivity Level Data for LM2853.

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

    National's certificate of product compliance for LM2853 is located at RoHS Status.

    Part Number(s)
    (NSID)
    DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM2853-1.2EVAL
    3A 550 kHz Synchronous SIMPLE SWITCHER® Buck RegulatorFull production


     
    DistributorRegionQty
    AVNET-EMWorldwide7
    DIGI-KEYWorldwide0
    MOUSERWorldwide1
    $22.50 each1

    Description:

    LM2853 3A 550kHz Synchronous SIMPLE SWITCHER® BUCK Regulator

    Features:

    • Input voltage range of 3.0V to 5.5V
    • Factory EEPROM set output voltages from 0.8V to 3.3V in 100 mV increments
    • Maximum load current of 3A
    • Voltage mode Control
    • Internal type-three compensation
    • Switching frequency of 550 kHz
    • Low standby current of 12 µA

    Applications:

    • Low voltage point of load regulaton
    • Local solution for FPGA/DSP/ASIC core power
    • Broadband networking and communications infrastructure

    Part Number(s)
    (NSID)
    DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM2853-1.8EVAL/NOPB

    3A 550 kHz Synchronous SIMPLE SWITCHER® Buck RegulatorFull production
    Lead Free (RoHS)

     
    DistributorRegionQty
    AVNET-EMWorldwide1
    DIGI-KEYWorldwide0
    MOUSERWorldwide1
    $22.50 each1

    Description:

    LM2853 3A 550kHz Synchronous SIMPLE SWITCHER® BUCK Regulator

    Features:

    • Input voltage range of 3.0V to 5.5V
    • Factory EEPROM set output voltages from 0.8V to 3.3V in 100 mV increments
    • Maximum load current of 3A
    • Voltage mode Control
    • Internal type-three compensation
    • Switching frequency of 550 kHz
    • Low standby current of 12 µA

    Applications:

    • Low voltage point of load regulaton
    • Local solution for FPGA/DSP/ASIC core power
    • Broadband networking and communications infrastructure

    Part Number(s)
    (NSID)
    DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM2853-3.3EVAL
    3A 550 kHz Synchronous SIMPLE SWITCHER® Buck RegulatorFull production


     
    DistributorRegionQty
    AVNET-EMWorldwide15
    DIGI-KEYWorldwide0
    MOUSERWorldwide1
    $22.50 each1

    Description:

    LM2853 3A 550kHz Synchronous SIMPLE SWITCHER® BUCK Regulator

    Features:

    • Input voltage range of 3.0V to 5.5V
    • Factory EEPROM set output voltages from 0.8V to 3.3V in 100 mV increments
    • Maximum load current of 3A
    • Voltage mode Control
    • Internal type-three compensation
    • Switching frequency of 550 kHz
    • Low standby current of 12 µA

    Applications:

    • Low voltage point of load regulaton
    • Local solution for FPGA/DSP/ASIC core power
    • Broadband networking and communications infrastructure



    National Semiconductor follows the provisions of the Product Stewardship Guide for Customers (CSP-9-111C1) and Banned Substances and Materials of Interest Specification (CSP-9-111S2) for regulatory environmental compliance. Details may be found at: www.national.com/en/packaging/greennopb.html. Lead free products are RoHS compliant.

    Lead Free product status is available through the search tool located here

    Part Number(s)
    (NSID)
    Weight
    (milligrams)
    TypePinsMSL RatingPeak ReflowRoHS
    Status
    CAD SymbolsModelsPackage
    Marking
    Format
    LM2853MH-0.8/NOPB

    LM2853MH-0.8
    53.783
    54.004
    TSSOP EXP PAD141
    1
    260
    260
    DetailDownloadN/A
    NSUZXYTT
    LM2853
    -0.8
    LM2853MH-1.0/NOPB

    LM2853MH-1.0
    53.783
    54.004
    TSSOP EXP PAD141
    1
    260
    260
    DetailDownloadN/A
    NSUZXYTT
    LM2853
    -1.0
    LM2853MH-1.2/NOPB

    LM2853MH-1.2
    53.783
    54.004
    TSSOP EXP PAD141
    1
    260
    260
    DetailDownloadN/A
    NSUZXYTT
    LM2853
    -1.2
    LM2853MH-1.5/NOPB

    LM2853MH-1.5
    53.783
    54.004
    TSSOP EXP PAD141
    1
    260
    260
    DetailDownloadN/A
    NSUZXYTT
    LM2853
    -1.5
    LM2853MH-1.8/NOPB

    LM2853MH-1.8
    53.783
    54.004
    TSSOP EXP PAD141
    1
    260
    260
    DetailDownloadN/A
    NSUZXYTT
    LM2853
    -1.8
    LM2853MH-2.5/NOPB

    LM2853MH-2.5
    53.783
    54.004
    TSSOP EXP PAD141
    1
    260
    260
    DetailDownloadN/A
    NSUZXYTT
    LM2853
    -2.5
    LM2853MH-3.0/NOPB

    LM2853MH-3.0
    53.783
    54.004
    TSSOP EXP PAD141
    1
    260
    260
    DetailDownloadN/A
    NSUZXYTT
    LM2853
    -3.0
    LM2853MH-3.3/NOPB

    LM2853MH-3.3
    53.783
    54.004
    TSSOP EXP PAD141
    1
    260
    260
    DetailDownloadN/A
    NSUZXYTT
    LM2853
    -3.3
    LM2853MHX-0.8/NOPB

    LM2853MHX-0.8
    53.783
    54.004
    TSSOP EXP PAD141
    1
    260
    260
    DetailDownloadN/A
    NSUZXYTT
    LM2853
    -0.8
    LM2853MHX-1.0/NOPB

    LM2853MHX-1.0
    53.783
    54.004
    TSSOP EXP PAD141
    1
    260
    260
    DetailDownloadN/A
    NSUZXYTT
    LM2853
    -1.0
    LM2853MHX-1.2/NOPB

    LM2853MHX-1.2
    53.783
    54.004
    TSSOP EXP PAD141
    1
    260
    260
    DetailDownloadN/A
    NSUZXYTT
    LM2853
    -1.2
    LM2853MHX-1.5/NOPB

    LM2853MHX-1.5
    53.783
    54.004
    TSSOP EXP PAD141
    1
    260
    260
    DetailDownloadN/A
    NSUZXYTT
    LM2853
    -1.5
    LM2853MHX-1.8/NOPB

    LM2853MHX-1.8
    53.783
    54.004
    TSSOP EXP PAD141
    1
    260
    260
    DetailDownloadN/A
    NSUZXYTT
    LM2853
    -1.8
    LM2853MHX-2.5/NOPB

    LM2853MHX-2.5
    53.783
    54.004
    TSSOP EXP PAD141
    1
    260
    260
    DetailDownloadN/A
    NSUZXYTT
    LM2853
    -2.5
    LM2853MHX-3.0/NOPB

    LM2853MHX-3.0
    53.783
    54.004
    TSSOP EXP PAD141
    1
    260
    260
    DetailDownloadN/A
    NSUZXYTT
    LM2853
    -3.0
    LM2853MHX-3.3/NOPB

    LM2853MHX-3.3
    53.783
    54.004
    TSSOP EXP PAD141
    1
    260
    260
    DetailDownloadN/A
    NSUZXYTT
    LM2853
    -3.3

    All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

    Moisture Sensitivity Level Data for LM2853.

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

    National's certificate of product compliance for LM2853 is located at RoHS Status.

    Design Tools
    TitleSizeDate
    Article - Voltage Mode Compensation of Buck Regulators  

    CAD Symbols and Models
    Download LM2853 CAD Symbols
     Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LM2853MH-3.0CS065247473430552700011568301341
    LM2853MH-3.3CS065247473430552700011568301341
    LM2853MHX-3.0CS065247473430552700011568301341
    LM2853MHX-3.3CS065247473430552700011568301341

    Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

    For more information on Reliability Metrics, please click here.


    All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

    Moisture Sensitivity Level Data for LM2853.

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

    National's certificate of product compliance for LM2853 is located at RoHS Status.

    MotionFire Development Platform
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    MotionFire Development Platform
    Date: 2009-03-25
    Length: 0:30:00
    [Information as of 6-Feb-2012]