National Semiconductor | High-performance Analog

 

 LM25061   

Positive Low Voltage Power Limiting Hot Swap Controller
Click link to Download

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 output voltage monitoring 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 LM25061 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 LM25061 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 exceeds a programmable threshold. The input under-voltage level and hysteresis are programmable, as well as the initial insertion delay time and fault detection time. The LM25061-1 latches off after a fault detection, while the LM25061-2 automatically restarts at a fixed duty cycle. The LM25061 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

    LM25061

     
    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
    LM25069Includes Adjustable Over-voltage Protection
    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 / ValuesLM25061 LM25069 LM5067 LM5069
    Input Min Voltage2.9 Volt 2.9 Volt -80 Volt 9 Volt
    Input Max Voltage17 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
    PWRGD Outputactive high active high active high active high
    In-Rush Current LimitActive Active Active Active
    Active CurrentLimitYes Yes Yes Yes
    Comparator Current LimitYes Yes Yes Yes
    Overvoltage ProtectionNo Yes Yes Yes
    Power LimitingYes Yes Yes Yes
    Temperature Min-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
    RegTypeHot Swap Controller Hot Swap Controller Hot Swap Controller Hot Swap Controller
    PowerWiseNo No
    Output Voltage MonitoringYes

    Datasheets
    TitleSizeDateOther
    Language
    LM25061 Positive Low Voltage Power Limiting Hot Swap Controller589
    Kbytes
    9-Dec-10   


    Application Notes
    TitleSizeDateOther
    Language
    AN-1946: Application Note 1946 LM25061 Evaluation Board470
    Kbytes
    29-Jun-09 中文


    Other Technical Documents
    TitleTypeDate
    TVS Clamping in Hot-Swap CircuitsExternal Article 2011-09-29

    Part Number(s)
    (NSID)
    Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM25061PMM-1/NOPB


    RoHS Status


    MINI SOIC
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $1.33 each at 1K+ pcsreel
    of
    1000
    LM25061PMM-2/NOPB


    RoHS Status


    MINI SOIC
    Full production
    Lead Time: 8 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $1.33 each at 1K+ pcsreel
    of
    1000
    LM25061PMME-1/NOPB


    RoHS Status


    MINI SOIC
    Full production
    Lead Time: 8 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide935
    MOUSERWorldwide250
    $1.33 each at 1K+ pcsreel
    of
    250
    LM25061PMME-2/NOPB


    RoHS Status


    MINI SOIC
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide283
    FARNELLEurope and Asia91
    MOUSERWorldwide250
    NEWARKAmericas91
    $1.33 each at 1K+ pcsreel
    of
    250
    LM25061PMMX-1/NOPB


    RoHS Status


    MINI SOIC
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $1.33 each at 1K+ pcsreel
    of
    3500
    LM25061PMMX-2/NOPB


    RoHS Status


    MINI SOIC
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $1.33 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 LM25061.

    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 LM25061 is located at RoHS Status.

    Part Number(s)
    (NSID)
    DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM25061MM-2EVAL/NOPB

    LM25061MM-2EVAL - (Evaluation Board) Positive Low Voltage Power Limiting Hot Swap ControllerFull production
    Lead Free (RoHS)

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    MOUSERWorldwide1
    TAYLORAmericas4
    $45.00 each1

    Description:

    The LM25061 evaluation board provides the design engineer with a fully functional hot swap controller board designed for positive voltage systems. This board contains an LM25061-2, 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: 4.7V and 4.45V
    • PGD Thresholds: 13V and 12.5V
    • 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
    LM25061PMM-1/NOPB

    29.841
    MINI SOIC101260DetailDownloadN/A
    ZXTT
    SXSB
    LM25061PMM-2/NOPB

    29.841
    MINI SOIC101260DetailDownloadN/A
    ZXTT
    SXRB
    LM25061PMME-1/NOPB

    29.841
    MINI SOIC101260DetailDownloadN/A
    ZXTT
    SXSB
    LM25061PMME-2/NOPB

    29.841
    MINI SOIC101260DetailDownloadN/A
    ZXTT
    SXRB
    LM25061PMMX-1/NOPB

    29.841
    MINI SOIC101260DetailDownloadN/A
    ZXTT
    SXSB
    LM25061PMMX-2/NOPB

    29.841
    MINI SOIC101260DetailDownloadN/A
    ZXTT
    SXRB

    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 LM25061.

    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 LM25061 is located at RoHS Status.

    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LM25061PMM-1PVIP0500142800017550003497986041
    LM25061PMM-2PVIP0500142800017550003497986041
    LM25061PMME-1PVIP0500142800017550003497986041
    LM25061PMME-2PVIP0500142800017550003497986041
    LM25061PMMX-1PVIP0500142800017550003497986041
    LM25061PMMX-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 LM25061.

    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 LM25061 is located at RoHS Status.

    What's New in Power Management -- August 09
    Loading video...


    LM5066/64 System Protection & Management with Hot Swap Controller Overview
    Loading video...


    LM5066/64 System Protection & Management with Hot Swap Controller Demo
    Loading video...


    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]