National Semiconductor | High-performance Analog

 

 LM25069   

Positive Low Voltage Power Limiting Hot Swap Controller
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Features

  • Operating range: +2.9V to +17V
  • In-rush current limit for safe board insertion into live power sources
  • Programmable maximum power dissipation in the external pass device
  • Adjustable current limit
  • Circuit breaker function for severe over-current events
  • Internal high side charge pump and gate driver for external N-channel MOSFET
  • Adjustable under-voltage lockout (UVLO) and hysteresis
  • Adjustable over-voltage lockout (OVLO) and hysteresis
  • Initial insertion timer allows ringing and transients to subside after system connection
  • Programmable fault timer avoids nuisance trips
  • Active high open drain POWER GOOD output
  • Available in latched fault and automatic restart versions
  • Description

    The LM25069 positive hot swap controller provides intelligent control of the power supply voltage to the load during insertion and removal of circuit cards from a live system backplane or other "hot" power sources. The LM25069 provides in-rush current control to limit system voltage droop and transients. The current limit and power dissipation in the external series pass N-Channel MOSFET are programmable, ensuring operation within the Safe Operating Area (SOA). The POWER GOOD output indicates when the output voltage is within 1.3V of the input voltage. The input under-voltage and over-voltage lockout levels and hysteresis are programmable, as well as the initial insertion delay time and fault detection time. The LM25069-1 latches off after a fault detection, while the LM25069-2 automatically restarts at a fixed duty cycle. The LM25069 is available in a 10 pin MSOP package.


    Applications

  • Server Backplane Systems
  • Base Station Power Distribution Systems
  • Solid State Circuit Breaker
  • WEBENCH Power Designer My Designs

    LM25069

     
    2.90 <=
    V in Lower
     V
     
    <=
    V in Upper
     V

    <= 17.00
    Output Current Limit  Amps
    Load Capacitance  uF
    UVLO  V
    OVLO  V
    Ambient Temperature  °C <= 100


    What are WEBENCH® tools?

    Also Recommended
    LM25061Features Output Monitor/Adjustable Power Good
    LM25066Provides Telemetry And Fault Monitoring Via PMBus
    LM5067-9 To -80V Input Range
    LM5069+9V To +80V Input Range



    Typical Application
    click for larger image


    Block Diagram
    click for larger image



    Typical Performance
    click for larger image


    Parameters / ValuesLM25069 LM25061 LM25066 LM5067 LM5069
    Input Min Voltage2.9 Volt 2.9 Volt 2.9 Volt -80 Volt 9 Volt
    Input Max Voltage17 Volt 17 Volt 17 Volt -9 Volt 80 Volt
    Fault Latch/Retrylatch-off/auto retry latch-off/auto retry latch-off/auto retry latch-off, auto retry latch-off, auto retry
    PWRGD Outputactive high active high active high active high active high
    In-Rush Current LimitActive Active Active Active Active
    Active CurrentLimitYes Yes Yes Yes Yes
    Comparator Current LimitYes Yes Yes Yes Yes
    Overvoltage ProtectionYes No Yes Yes Yes
    Power LimitingYes Yes Yes Yes Yes
    Temperature Min-40 deg C -40 deg C -40 deg C -40 deg C -40 deg C
    Temperature Max85 deg C 85 deg C 125 deg C 125 deg C 125 deg C
    RegTypeHot Swap Controller Hot Swap Controller Hot Swap Controller Hot Swap Controller Hot Swap Controller
    PowerWiseNo No Yes

    Datasheets
    TitleSizeDateOther
    Language
    LM25069 Positive Low Voltage Power Limiting Hot Swap Controller603
    Kbytes
    9-Dec-10   


    Application Notes
    TitleSizeDateOther
    Language
    AN-1947: Application Note 1947 LM25069 Evaluation Board483
    Kbytes
    29-Jun-09 中文
    AN-2186: Application Note 2186 Using the LM25066 in an Intel Node Manager 1.5 System826
    Kbytes
    12-Sep-11 
    AN-2187: Application Note 2187 Using the LM25066 in an Intel Node Manager 2.0 System109
    Kbytes
    12-Sep-11 
    AN-2040: Application Note 2040 Output Voltage Clamping Using the LM5069 Hot Swap Controller410
    Kbytes
    25-Jul-11 


    Other Technical Documents
    TitleTypeDate
    Current Sensing For Server Power Monitoring: MOSFET or Shunt?External Article 2011-07-01
    TVS Clamping in Hot-Swap CircuitsExternal Article 2011-09-29

    Part Number(s)
    (NSID)
    Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM25069PMM-1/NOPB


    RoHS Status


    MINI SOIC
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide1875
    MOUSERWorldwide1000
    $1.19 each at 1K+ pcsreel
    of
    1000
    LM25069PMM-2/NOPB


    RoHS Status


    MINI SOIC
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    AVNET-EMWorldwide1000
    DIGI-KEYWorldwide2012
    MOUSERWorldwide1000
    $1.19 each at 1K+ pcsreel
    of
    1000
    LM25069PMME-1/NOPB


    RoHS Status


    MINI SOIC
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    AVNET-EMWorldwide740
    DIGI-KEYWorldwide797
    FARNELLEurope and Asia763
    MOUSERWorldwide500
    NEWARKAmericas360
    $1.19 each at 1K+ pcsreel
    of
    250
    LM25069PMME-2/NOPB


    RoHS Status


    MINI SOIC
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide450
    DIGI-KEYWorldwide500
    FARNELLEurope and Asia401
    MOUSERWorldwide135
    NEWARKAmericas401
    TAYLORAmericas450
    $1.19 each at 1K+ pcsreel
    of
    250
    LM25069PMMX-1/NOPB


    RoHS Status


    MINI SOIC
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $1.19 each at 1K+ pcsreel
    of
    3500
    LM25069PMMX-2/NOPB


    RoHS Status


    MINI SOIC
    Full production
    Lead Time: 12 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $1.19 each at 1K+ pcsreel
    of
    3500

    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 LM25069.

    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 LM25069 is located at RoHS Status.

    Part Number(s)
    (NSID)
    DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM25069MM-2EVAL/NOPB

    LM25069MM-2EVAL - (Evaluation Board) Positive Low Voltage Power Limiting Hot Swap ControllerFull production
    Lead Free (RoHS)

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    MOUSERWorldwide1
    $45.00 each1

    Description:

    The LM25069 evaluation board provides the design engineer with a fully functional hot swap controller board designed for positive voltage systems. This board contains an LM25069-2, the auto restart version of this IC. The application note included in the kit describes the various functions of the board, how to test and evaluate it, and how to change the components for a specific application.

    Features:

    • Input voltage range: +2.9V to 17V
    • Current limit: 5 Amps, ± 10%
    • Q1 Power limit:: 15W
    • UVLO Thresholds: 4.8V and 4.45V
    • OVLO Thresholds: 15V and 14.6V
    • Insertion delay: 213 ms
    • Fault timeout period: 14.6 ms and 12.1 ms
    • Restart time: 1.8 seconds
    • Size: 4.0? x 1.38?

    Contents:




    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
    LM25069PMM-1/NOPB

    29.841
    MINI SOIC101260DetailDownloadN/A
    ZXTT
    SXNB
    LM25069PMM-2/NOPB

    29.841
    MINI SOIC101260DetailDownloadN/A
    ZXTT
    SXLB
    LM25069PMME-1/NOPB

    29.841
    MINI SOIC101260DetailDownloadN/A
    ZXTT
    SXNB
    LM25069PMME-2/NOPB

    29.841
    MINI SOIC101260DetailDownloadN/A
    ZXTT
    SXLB
    LM25069PMMX-1/NOPB

    29.841
    MINI SOIC101260DetailDownloadN/A
    ZXTT
    SXNB
    LM25069PMMX-2/NOPB

    29.841
    MINI SOIC101260DetailDownloadN/A
    ZXTT
    SXLB

    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 LM25069.

    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 LM25069 is located at RoHS Status.

    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LM25069PMM-1PVIP0500142800017550003497986041
    LM25069PMM-2PVIP0500142800017550003497986041
    LM25069PMME-1PVIP0500142800017550003497986041
    LM25069PMME-2PVIP0500142800017550003497986041
    LM25069PMMX-1PVIP0500142800017550003497986041
    LM25069PMMX-2PVIP0500142800017550003497986041

    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 LM25069.

    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 LM25069 is located at RoHS Status.

    What's New in Power Management -- August 09
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    LM5066/64 System Protection & Management with Hot Swap Controller Overview
    Loading video...


    LM5066/64 System Protection & Management with Hot Swap Controller Demo
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    What's New in Power Management -- August 09
    Date: 2009-08-21
    Length: 0:03:58
    LM5066/64 System Protection & Management with Hot Swap Controller Overview
    Date: 2011-06-27
    Length: 00:05:05
    LM5066/64 System Protection & Management with Hot Swap Controller Demo
    Date: 2011-06-27
    Length: 00:08:20
    [Information as of 9-Feb-2012]