National Semiconductor | High-performance Analog

 

 LM120   
Series 3-Terminal Negative Regulators 		Click link to Download

Features

  • Preset output voltage error less than ±3%
  • Preset current limit
  • Internal thermal shutdown
  • Operates with input-output voltage differential down to 1V
  • Excellent ripple rejection
  • Low temperature drift
  • Easily adjustable to higher output voltage

    • Description

    The LM120 series are three-terminal negative regulators with a fixed output voltage of −5V, −12V, and −15V, and up to 1.5A load current capability. Where other voltages are required, the LM137 and LM137HV series provide an output voltage range of −1.2V to −47V.

    The LM120 need only one external component—a compensation capacitor at the output, making them easy to apply. Worst case guarantees on output voltage deviation due to any combination of line, load or temperature variation assure satisfactory system operation.

    Exceptional effort has been made to make the LM120 Series immune to overload conditions. The regulators have current limiting which is independent of temperature, combined with thermal overload protection. Internal current limiting protects against momentary faults while thermal shutdown prevents junction temperatures from exceeding safe limits during prolonged overloads.

    Although primarily intended for fixed output voltage applications, the LM120 Series may be programmed for higher output voltages with a simple resistive divider. The low quiescent drain current of the devices allows this technique to be used with good regulation.



    Dual Trimmed Supply

     

    ParametersValues
    Output Current 1500 mA
    Output Min -5, -12, -15 Volt
    Input Min Voltage -25 Volt
    Input Max Voltage -18, -15, -8 Volt
    Adjustable Output No
    On/Off Pin No
    PowerGood / Error Flag No
    RegType Linear Regulator
    Temperature Min -55 deg C
    Temperature Max 150 deg C
    Output Max -5, -12, -15 Volt
    Output Voltage -5, -12, -15 Volt

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM120H-12/NOPB

    LM120H-12

    RoHS Status

    TO-39    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide233
    AVNET-EMWorldwide114
    DIGI-KEYWorldwide0
    MOUSERWorldwide500
    TAYLORAmericas233
    		$6.90 each at 1K+ pcsbox
    of
    500
    LM120H-15/NOPB

    LM120H-15

    RoHS Status

    TO-39    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide87
    AVNET-EMWorldwide225
    DIGI-KEYWorldwide0
    TAYLORAmericas492
    		$6.90 each at 1K+ pcsbox
    of
    500
    LM120H-5.0/NOPB

    LM120H-5.0

    RoHS Status

    TO-39    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide93
    AVNET-EMWorldwide370
    DIGI-KEYWorldwide0
    MOUSERWorldwide490
    TAYLORAmericas105
    		$6.90 each at 1K+ pcsbox
    of
    500

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    LM120H-15-MCP
    		NONE
    		NONE
    		08 Jun 1999
    LM120H-15-MLS
    		NONE
    		NONE
    		08 Sep 1998
    LM120H-8.0/883
    		NONE
    		NONE
    		08 Sep 1999
    LM120HG-5 MD8
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LM120K-12-MLS
    		NONE
    		NONE
    		08 Sep 1998
    LM120K-5.0-MLS
    		NONE
    		NONE
    		08 Sep 1998
    LM120K-5.0/883
    		LM137K/883
    		NATIONAL SEMICONDUCTOR
    		03 Dec 2008
    LM120KG-12 MW8
    		NONE
    		NATIONAL SEMICONDUCTOR
    		03 Dec 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 LM120.

    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 LM120 is located at RoHS Status.

    Part Number(s)
    (NSID)    		Weight
    (milligrams)    		TypePinsMSL RatingPeak ReflowRoHS
    Status    		CAD SymbolsModelsPackage
    Marking
    Format
    LM120H-12/NOPB

    LM120H-12
    		1032.657
    1032.657
    		TO-3931
    1    		NA
    NA    		DetailDownloadN/A
    		NSZXYTTE# LM120H-12P+
    LM120H-15/NOPB

    LM120H-15
    		1032.657
    1032.657
    		TO-3931
    1    		NA
    NA    		DetailDownloadN/A
    		NSZXYTTE# LM120H-15P+
    LM120H-5.0/NOPB

    LM120H-5.0
    		1032.657
    1032.657
    		TO-3931
    1    		NA
    NA    		DetailDownloadN/A
    		NSZXYTTE# LM120H-5.0P+

    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 LM120.

    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 LM120 is located at RoHS Status.

    CAD Symbols and Models
    Download LM120 CAD Symbols
    		 Models
    N/A


    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    LM120H-15-MCP
    		NONE
    		NONE
    		08 Jun 1999
    LM120H-15-MLS
    		NONE
    		NONE
    		08 Sep 1998
    LM120H-8.0/883
    		NONE
    		NONE
    		08 Sep 1999
    LM120HG-5 MD8
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    LM120K-12-MLS
    		NONE
    		NONE
    		08 Sep 1998
    LM120K-5.0-MLS
    		NONE
    		NONE
    		08 Sep 1998
    LM120K-5.0/883
    		LM137K/883
    		NATIONAL SEMICONDUCTOR
    		03 Dec 2008
    LM120KG-12 MW8
    		NONE
    		NATIONAL SEMICONDUCTOR
    		03 Dec 2008

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