National Semiconductor | High-performance Analog

 

 LM385-2.5   
Micropower Voltage Reference Diode 		Click link to Download

Features

  • ±20 mV (±0.8%) max. initial tolerance (A grade)
  • Operating current of 20 μA to 20 mA
  • 0.6Ω dynamic impedance (A grade)
  • Low temperature coefficient
  • Low voltage reference—2.5V
  • 1.2V device and adjustable device also available—LM185-1.2 series and LM185 series, respectively

    • Description

    The LM185-2.5/LM285-2.5/LM385-2.5 are micropower 2-terminal band-gap voltage regulator diodes. Operating over a 20 μA to 20 mA current range, they feature exceptionally low dynamic impedance and good temperature stability. On-chip trimming is used to provide tight voltage tolerance. Since the LM-185-2.5 band-gap reference uses only transistors and resistors, low noise and good long term stability result.

    Careful design of the LM185-2.5 has made the device exceptionally tolerant of capacitive loading, making it easy to use in almost any reference application. The wide dynamic operating range allows its use with widely varying supplies with excellent regulation.

    The extremely low power drain of the LM185-2.5 makes it useful for micropower circuitry. This voltage reference can be used to make portable meters, regulators or general purpose analog circuitry with battery life approaching shelf life. Further, the wide operating current allows it to replace older references with a tighter tolerance part. For applications requiring 1.2V see LM185-1.2.

    The LM185-2.5 is rated for operation over a −55°C to 125°C temperature range while the LM285-2.5 is rated −40°C to 85°C and the LM385-2.5 0°C to 70°C. The LM185-2.5/LM285-2.5 are available in a hermetic TO-46 package and the LM285-2.5/LM385-2.5 are also available in a low-cost TO-92 molded package, as well as S.O. and SOT-23. The LM185-2.5 is also available in a hermetic leadless chip carrier package.

    Also Recommended
    LM385-1.2▲1.2 V Fixed Reference Voltage
    LM385-ADJ▲Adjustable Reference Voltage

    		Connection Diagram
    *click for larger image



    Typical Performance
    click for larger image


    Parameters / ValuesLM385-2.5 LM385-1.2 LM385-ADJ
    Initial Accuracy (+/-) Max3 % 2 % 2 %
    Reference Voltage2.5 V 1.235 V Adjustable
    Operating Current0.02 mA 0.01 mA 0.01 mA
    Output Current20 mA 20 mA 20 mA
    Temperature Min0 deg C 0 deg C 0 deg C
    Temperature Max70 deg C 70 deg C 70 deg C

    Datasheets
    TitleSizeDateOther
    Language
    LM385-2.5 Micropower Voltage Reference Diode334
    Kbytes    		30-Jan-08日本語  

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM385BM-2.5/NOPB

    LM385BM-2.5

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide570
    AVNET-EMWorldwide855
    DIGI-KEYWorldwide2064
    MOUSERWorldwide779
    TAYLORAmericas570
    		$0.34 each at 1K+ pcsrail
    of
    95
    LM385BMX-2.5/NOPB

    LM385BMX-2.5

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    AVNET-EMWorldwide2500
    DIGI-KEYWorldwide0
    MOUSERWorldwide2500
    		$0.34 each at 1K+ pcsreel
    of
    2500
    LM385BXM-2.5/NOPB

    LM385BXM-2.5

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    AVNET-EMWorldwide265
    DIGI-KEYWorldwide1671
    MOUSERWorldwide355
    TAYLORAmericas25
    		$1.11 each at 1K+ pcsrail
    of
    95
    LM385BXMX-2.5/NOPB


    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$1.11 each at 1K+ pcsreel
    of
    2500
    LM385BXZ-2.5/NOPB


    RoHS Status

    TO-92    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide1800
    AVNET-EMWorldwide2000
    DIGI-KEYWorldwide0
    MOUSERWorldwide1654
    NEWARKAmericas802
    TAYLORAmericas1800
    		$0.81 each at 1K+ pcsbox
    of
    1800
    LM385BYM-2.5/NOPB


    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    AVNET-EMWorldwide1140
    DIGI-KEYWorldwide0
    MOUSERWorldwide570
    		$0.70 each at 1K+ pcsrail
    of
    95
    LM385BYMX-2.5/NOPB


    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    MOUSERWorldwide2500
    		$0.70 each at 1K+ pcsreel
    of
    2500
    LM385BYZ-2.5/NOPB


    RoHS Status

    TO-92    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide1585
    AVNET-EMWorldwide1140
    DIGI-KEYWorldwide0
    MOUSERWorldwide1740
    TAYLORAmericas1585
    		$0.69 each at 1K+ pcsbox
    of
    1800
    LM385BZ-2.5/NOPB


    RoHS Status

    TO-92    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide486
    AVNET-EMWorldwide2170
    DIGI-KEYWorldwide1618
    MOUSERWorldwide1260
    NEWARKAmericas525
    TAYLORAmericas1220
    		$0.37 each at 1K+ pcsbox
    of
    1800
    LM385M-2.5/NOPB

    LM385M-2.5

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide1685
    AVNET-EMWorldwide1554
    DIGI-KEYWorldwide542
    MOUSERWorldwide1680
    NEWARKAmericas1517
    RS COMPONENTSWorldwide20
    TAYLORAmericas3016
    		$0.23 each at 1K+ pcsrail
    of
    95
    LM385M3-2.5/NOPB

    LM385M3-2.5

    RoHS Status

    SOT-23    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    AITGAsia Pacific1001
    ARROWWorldwide1174
    AVNET-EMWorldwide2100
    DIGI-KEYWorldwide5898
    MOUSERWorldwide772
    NEWARKAmericas1997
    RSL MICROAsia Pacific2000
    TAYLORAmericas12457
    TECHMOSAAsia Pacific1081
    		$0.39 each at 1K+ pcsreel
    of
    1000
    LM385M3X-2.5/NOPB

    LM385M3X-2.5

    RoHS Status

    SOT-23    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide6000
    AVNET-EMWorldwide9000
    DIGI-KEYWorldwide8438
    MOUSERWorldwide2710
    NEWARKAmericas1685
    TAYLORAmericas9000
    		$0.39 each at 1K+ pcsreel
    of
    3000
    LM385MX-2.5/NOPB

    LM385MX-2.5

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide2500
    AVNET-EMWorldwide2500
    DIGI-KEYWorldwide7568
    MOUSERWorldwide2494
    TAYLORAmericas2500
    		$0.23 each at 1K+ pcsreel
    of
    2500
    LM385Z-2.5/NOPB


    RoHS Status

    TO-92    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide1320
    AVNET-EMWorldwide405
    DIGI-KEYWorldwide2029
    MOUSERWorldwide1696
    NEWARKAmericas1799
    RS COMPONENTSWorldwide1269
    RSL MICROAsia Pacific61200
    TAYLORAmericas7355
    		$0.22 each at 1K+ pcsbox
    of
    1800

    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 LM385-2.5.

    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 LM385-2.5 is located at RoHS Status.

    Part Number(s)
    (NSID)    		Weight
    (milligrams)    		TypePinsMSL RatingPeak ReflowRoHS
    Status    		CAD SymbolsModelsPackage
    Marking
    Format
    LM385BM-2.5/NOPB

    LM385BM-2.5
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailN/AN/A
    		NSZXTT
    LM385
    BM2.5
    LM385BMX-2.5/NOPB

    LM385BMX-2.5
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailN/AN/A
    		NSZXTT
    LM385
    BM2.5
    LM385BXM-2.5/NOPB

    LM385BXM-2.5
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailN/AN/A
    		NSZXTT
    385BX
    M2.5
    LM385BXMX-2.5/NOPB

    		69.761
    70.001
    		SOIC NARROW81260DetailN/AN/A
    		NSZXTT
    385BX
    M2.5
    LM385BXZ-2.5/NOPB

    		201.662
    202.003
    		TO-9231NADetailN/AN/A
    		NSXYTT
    385BX
    Z-2.5
    LM385BYM-2.5/NOPB

    		69.761
    70.001
    		SOIC NARROW81260DetailN/AN/A
    		NSZXTT
    385BY
    M2.5
    LM385BYMX-2.5/NOPB

    		69.761
    70.001
    		SOIC NARROW81260DetailN/AN/A
    		NSZXTT
    385BY
    M2.5
    LM385BYZ-2.5/NOPB

    		201.662
    202.003
    		TO-9231NADetailN/AN/A
    		NSXYTT
    385BY
    Z-2.5
    LM385BZ-2.5/NOPB

    		201.662
    202.003
    		TO-9231NADetailN/AN/A
    		NSXYTT
    LM385
    BZ2.5
    LM385M-2.5/NOPB

    LM385M-2.5
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailN/AN/A
    		NSZXTT
    LM385
    M2.5
    LM385M3-2.5/NOPB

    LM385M3-2.5
    		10.34
    10.399
    		SOT-2331
    1    		260
    260    		DetailN/AN/A
    		R12
    XTT
    LM385M3X-2.5/NOPB

    LM385M3X-2.5
    		10.34
    10.399
    		SOT-2331
    1    		260
    260    		DetailN/AN/A
    		R12
    XTT
    LM385MX-2.5/NOPB

    LM385MX-2.5
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailN/AN/A
    		NSZXTT
    LM385
    M2.5
    LM385Z-2.5/NOPB

    		201.662
    202.003
    		TO-9231NADetailN/AN/A
    		NSXYTT
    LM385
    Z2.5

    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 LM385-2.5.

    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 LM385-2.5 is located at RoHS Status.

    CAD Symbols and Models
    N/A
    		 Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LM385BM-2.5SLM04404600353250011002356520
    LM385BMX-2.5SLM04404600353250011002356520
    LM385BXM-2.5SLM04404600353250011002356520
    LM385BXMX-2.5SLM04404600353250011002356520
    LM385BXZ-2.5SLM04404600353250011002356520
    LM385BYM-2.5SLM04404600353250011002356520
    LM385BYMX-2.5SLM04404600353250011002356520
    LM385BYZ-2.5SLM04404600353250011002356520
    LM385BZ-2.5SLM04404600353250011002356520
    LM385M-2.5SLM04404600353250011002356520
    LM385M3-2.5LB30003437100416450011181688246
    LM385M3X-2.5LB30003437100416450011181688246
    LM385MX-2.5SLM04404600353250011002356520
    LM385Z-2.5SLM04404600353250011002356520

    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 LM385-2.5.

    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 LM385-2.5 is located at RoHS Status.

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