National Semiconductor | High-performance Analog

 

 LM3710   
Microprocessor Supervisory Circuits with Power Fail Input, Low Line Output, Manual Reset and Watchdog Timer 		Click link to Download

Features
  • Standard Reset Threshold voltage: 3.08V
  • Custom Reset Threshold voltages: For other voltages between 2.2V and 5.0V in 10mV increments, contact National Semiconductor Corp.
  • No external components required
  • Manual-Reset input
  • RESET# (LM3710) or RESET (LM3711) outputs
  • Precision supply voltage monitor
  • Factory programmable Reset and Watchdog Timeout Delays
  • Separate Power Fail comparator
  • Available in micro SMD package for minimum footprint
  • ±0.5% Reset threshold accuracy at room temperature
  • ±2% Reset threshold accuracy over temperature extremes
  • Reset assertion down to 1V VCC (RESET# option only)
  • 28 µA VCC supply current

    • Description

    The LM3710/LM3711 series of microprocessor supervisory circuits provide the maximum flexibility for monitoring power supplies and battery controlled functions in systems without backup batteries. The LM3710/LM3711 series are available in MSOP-10 and 9-bump micro SMD packages.

    Built-in features include the following:

    Reset: Reset is asserted during power-up, power-down, and brownout conditions. RESET# is guaranteed down to VCC of 1.0V.

    Manual Reset Input: An input that asserts reset when pulled low.

    Power-Fail Input: A 1.225V threshold detector for power fail warning, or to monitor a power supply other than VCC.

    Low Line Output: This early power failure warning indicator goes low when the supply voltage drops to a value which is 2% higher than the reset threshold voltage.

    Watchdog Timer: The WDI (Watchdog Input) monitors one of the µP's output lines for activity. If no output transition occurs during the watchdog timeout period, reset is activated.


    Applications

  • Embedded Controllers and Processors
  • Intelligent Instruments
  • Automotive Systems
  • Critical µP Power Monitoring




    • Typical Application
    click for larger image


    		Block Diagram
    click for larger image



    Typical Performance
    click for larger image


     

    ParametersValues
    Power on Reset Yes
    Watchdog Yes
    Power Fail Input Yes
    Manual Reset Yes
    Reset Timeout Period 200 ms
    On/Off Pin Yes
    PowerGood / Error Flag Yes
    Input Min Voltage 1 Volt
    Input Max Voltage 5.5 Volt
    RegType Supervisor
    Temperature Min -40 deg C
    Temperature Max 85 deg C
    Voltage Supervised 2.5 Volt

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM3710XKMM-463/NOPB


    RoHS Status

    MINI SOIC    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide727
    DIGI-KEYWorldwide0
    MOUSERWorldwide975
    TAYLORAmericas727
    		$1.10 each at 1K+ pcsreel
    of
    1000
    LM3710XQMM-308/NOPB

    LM3710XQMM-308

    RoHS Status

    MINI SOIC    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide1000
    AVNET-EMWorldwide1000
    DIGI-KEYWorldwide2360
    FARNELLEurope and Asia581
    MOUSERWorldwide1000
    NEWARKAmericas581
    TAYLORAmericas1000
    		$1.10 each at 1K+ pcsreel
    of
    1000
    LM3710XQMMX-308/NOPB


    RoHS Status

    MINI SOIC    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$1.10 each at 1K+ pcsreel
    of
    3500
    LM3710YQMM-232/NOPB

    LM3710YQMM-232

    RoHS Status

    MINI SOIC    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide0
    RS COMPONENTSWorldwide20
    		$1.10 each at 1K+ pcsreel
    of
    1000

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    LM3710XKMM-232
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LM3710XNMM-450
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LM3710XQBP-308
    		NONE
    		NATIONAL SEMICONDUCTOR
    		24 Jul 2009
    LM3710XQTP-308
    		LM3710XQMM-308
    		National Semiconductor
    		30 Nov 2009
    LM3710XQTPX-308
    		LM3710XQMMX-308
    		National Semiconductor
    		30 Nov 2009

    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 LM3710.

    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 LM3710 is located at RoHS Status.

    Part Number(s)
    (NSID)    		Weight
    (milligrams)    		TypePinsMSL RatingPeak ReflowRoHS
    Status    		CAD SymbolsModelsPackage
    Marking
    Format
    LM3710XKMM-463/NOPB

    		29.841
    30.002
    		MINI SOIC101260DetailDownloadN/A
    		ZXTT
    R74B
    LM3710XQMM-308/NOPB

    LM3710XQMM-308
    		29.841
    30.002
    		MINI SOIC101
    1    		260
    260    		DetailDownloadN/A
    		ZXTT
    R37B
    LM3710XQMMX-308/NOPB

    		29.841
    30.002
    		MINI SOIC101260DetailDownloadN/A
    		ZXTT
    R37B
    LM3710YQMM-232/NOPB

    LM3710YQMM-232
    		29.841
    30.002
    		MINI SOIC101
    1    		260
    260    		DetailDownloadN/A
    		ZXTT
    R77B

    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 LM3710.

    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 LM3710 is located at RoHS Status.

    CAD Symbols and Models
    Download LM3710 CAD Symbols
    		 Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LM3710XKMM-463CS065247473430552700011568301341
    LM3710XQMM-308CS065247473430552700011568301341
    LM3710XQMMX-308CS065247473430552700011568301341
    LM3710YQMM-232CS065247473430552700011568301341

    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 LM3710.

    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 LM3710 is located at RoHS Status.

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    LM3710XKMM-232
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LM3710XNMM-450
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LM3710XQBP-308
    		NONE
    		NATIONAL SEMICONDUCTOR
    		24 Jul 2009
    LM3710XQTP-308
    		LM3710XQMM-308
    		National Semiconductor
    		30 Nov 2009
    LM3710XQTPX-308
    		LM3710XQMMX-308
    		National Semiconductor
    		30 Nov 2009

    [Information as of 9-Feb-2012]
    Copyright © 2011 National Semiconductor Corporation