National Semiconductor | High-performance Analog

 

 LM4125   
Precision Micropower Low Dropout Voltage Reference from the PowerWise® Family		 Click link to Download

Features

Small SOT23-5 package

  

Low dropout voltage:

120 mV Typ @ 1 mA

High output voltage accuracy:

0.2%

Source and Sink current output:

±5 mA

Supply current:

160 µA Typ.

Low Temperature Coefficient:

50 ppm/°C

Fixed output voltages:

2.048, 2.5,and 4.096

Industrial temperature Range:

-40°C to +85°C

(For extended temperature range, -40°C to 125°C, contact National Semiconductor)

  

Description

The LM4125 is a precision low power low dropout bandgap voltage reference with up to 5 mA output current source and sink capability.

This series reference operates with input voltages as low as 2V and up to 6V consuming 160 µA (Typ.) supply current. In power down mode, device current drops to less than 2 µA.

The LM4125 comes in two grades (A and Standard) and three voltage options for greater flexibility. The best grade devices (A) have an initial accuracy of 0.2%, while the standard have an initial accuracy of 0.5%, both with a tempco of 50ppm/°C guaranteed from -40°C to +125°C.

The very low dropout voltage, low supply current and power-down capability of the LM4125 makes this product an ideal choice for battery powered and portable applications.

The device performance is guaranteed over the industrial temperature range (-40°C to +85°C), while certain specs are guaranteed over the extended temperature range (-40°C to +125°C). Please contact National for full specifications over the extended temperature range. The LM4125 is available in a standard 5-pin SOT-23 package.


Applications

  • Portable, battery powered equipment
  • Instrumentation and process control
  • Automotive & Industrial
  • Test equipment
  • Data acquisition systems
  • Precision regulators
  • Battery chargers
  • Base stations
  • Communications
  • Medical equipment

    • Also Recommended
    LM4120▲Precision Micropower Low Dropout Voltage Reference
    LM4132▲SOT-23 High Precision Series Reference



    Typical Application
    *click for larger image


    		Connection Diagram
    click for larger image



    Typical Performance
    *click for larger image


    Parameters / ValuesLM4125 LM4120 LM4132
    Initial Accuracy (+/-) Max0.2, 0.5 % 0.2, 0.5 % 0.2, 0.4, 0.1, 0.05, 0.5 %
    Reference Voltage2.5 V, 2.048 V 1.8 V, 2.5 V, 5 V, 3 V, 4.096 V, 2.048 V, 3.3 V 1.8 V, 2.5 V, 4.096 V, 2.048 V, 3.3 V, 3.0 V
    Tempco, max (ppm/C)50 ppm 50 ppm 30, 20, 10 ppm
    Input Min Voltage3.3 Volt 3.3 Volt 2.2 Volt
    Input Max Voltage6 Volt 14 Volt 5.5 Volt
    Dropout Voltage0.180 Volt 0.18 Volt 0.175 Volt
    Quiescent Current0.160 mA 0.16 mA 0.06 mA
    Output Current5 mA 5 mA 20 mA
    Voltage Noise (rms)20 uV 36 uV 170 uV
    Long Term Stability (ppm/1000hr)100 ppm 100 ppm 50 ppm
    Temperature Min-40 deg C -40 deg C -40 deg C
    Temperature Max125 deg C 85 deg C 125 deg C
    AutomotiveNo No No
    PowerWiseYes Yes Yes

    Datasheets
    TitleSizeDateOther
    Language
    LM4125 Precision Micropower Low Dropout Voltage Reference300
    Kbytes    		10-Nov-03   

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM4125AIM5-2.5/NOPB

    LM4125AIM5-2.5

    RoHS Status

    SOT-23    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide1999
    MOUSERWorldwide888
    RS COMPONENTSWorldwide25
    		$0.70 each at 1K+ pcsreel
    of
    1000
    LM4125IM5-2.0/NOPB


    RoHS Status

    SOT-23    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    AVNET-EMWorldwide1000
    DIGI-KEYWorldwide1789
    MOUSERWorldwide805
    RS COMPONENTSWorldwide5
    		$0.65 each at 1K+ pcsreel
    of
    1000
    LM4125IM5-2.5/NOPB

    LM4125IM5-2.5

    RoHS Status

    SOT-23    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide2157
    MOUSERWorldwide930
    		$0.65 each at 1K+ pcsreel
    of
    1000

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    LM4125AIM5-2.0
    		NONE
    		NATIONAL SEMICONDUCTOR
    		16 Nov 2008
    LM4125AIM5-4.1
    		NONE
    		NATIONAL SEMICONDUCTOR
    		16 Nov 2008
    LM4125AIM5X-2.0
    		NONE
    		NATIONAL SEMICONDUCTOR
    		16 Nov 2008
    LM4125AIM5X-4.1
    		NONE
    		NATIONAL SEMICONDUCTOR
    		16 Nov 2008
    LM4125IM5-4.1
    		NONE
    		NATIONAL SEMICONDUCTOR
    		16 Nov 2008
    LM4125IM5X-2.0
    		NONE
    		NATIONAL SEMICONDUCTOR
    		16 Nov 2008
    LM4125IM5X-4.1
    		NONE
    		NATIONAL SEMICONDUCTOR
    		16 Nov 2008

    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 LM4125.

    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 LM4125 is located at RoHS Status.

    Part Number(s)
    (NSID)    		Weight
    (milligrams)    		TypePinsMSL RatingPeak ReflowRoHS
    Status    		CAD SymbolsModelsPackage
    Marking
    Format
    LM4125AIM5-2.5/NOPB

    LM4125AIM5-2.5
    		14.696
    14.801
    		SOT-2351
    1    		260
    260    		DetailDownloadN/A
    		R81A
    XTT
    LM4125IM5-2.0/NOPB

    		14.696
    14.801
    		SOT-2351260DetailDownloadN/A
    		R80B
    XTT
    LM4125IM5-2.5/NOPB

    LM4125IM5-2.5
    		14.696
    14.801
    		SOT-2351
    1    		260
    260    		DetailDownloadN/A
    		R81B
    XTT

    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 LM4125.

    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 LM4125 is located at RoHS Status.

    CAD Symbols and Models
    Download LM4125 CAD Symbols
    		 Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LM4125AIM5-2.5LFAST10201400027850002790251354
    LM4125IM5-2.0LFAST10201400027850002790251354
    LM4125IM5-2.5LFAST10201400027850002790251354

    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 LM4125.

    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 LM4125 is located at RoHS Status.

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    LM4125AIM5-2.0
    		NONE
    		NATIONAL SEMICONDUCTOR
    		16 Nov 2008
    LM4125AIM5-4.1
    		NONE
    		NATIONAL SEMICONDUCTOR
    		16 Nov 2008
    LM4125AIM5X-2.0
    		NONE
    		NATIONAL SEMICONDUCTOR
    		16 Nov 2008
    LM4125AIM5X-4.1
    		NONE
    		NATIONAL SEMICONDUCTOR
    		16 Nov 2008
    LM4125IM5-4.1
    		NONE
    		NATIONAL SEMICONDUCTOR
    		16 Nov 2008
    LM4125IM5X-2.0
    		NONE
    		NATIONAL SEMICONDUCTOR
    		16 Nov 2008
    LM4125IM5X-4.1
    		NONE
    		NATIONAL SEMICONDUCTOR
    		16 Nov 2008

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