ST Life.augmented

LDK120

200 mA low quiescent current very low noise LDO
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The LDK120 low drop voltage regulator provides 200 mA of maximum current from an input supply voltage in the range of 1.9 V to 5.5 V, with a typical dropout voltage of 100 mV.

It is stabilized with a ceramic capacitor on the output.

The very low drop voltage, low quiescent current and low noise features make it suitable for low power battery-powered applications.

An enable logic control function puts the LDK120 in shutdown mode allowing a total current consumption lower than 1 μA.

The device also includes a short-circuit constant current limiting and thermal protection.

pdf Please read
Errata Sheet
pdf Download
Datasheet

Key Features

  • Input voltage from 1.9 to 5.5 V
  • Very low dropout voltage (100 mV typ. at 100 mA load)
  • Low quiescent current (max. 100 μA, 1 μA in OFF mode)
  • Very low noise
  • Output voltage tolerance: ± 2.0% @ 25 °C
  • 200 mA guaranteed output current
  • Wide range of fixed output voltages available on request: from 0.8 V to 3.5 V with 100 mV step
  • Adjustable version: from 0.8 V to VIN-Vdrop
  • Logic-controlled electronic shutdown
  • Compatible with ceramic capacitor COUT= 1 μF
  • Internal current and thermal limit
  • Available in SOT23-5L, SOT323-5L and DFN6 (1.2 x 1.3 mm) packages
  • Temperature range: -40 °C to 125 °C

Design Resources

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Technical Documentation

Product Specifications

Description Version Size
pdf
DS9378: 200 mA low quiescent current very low noise LDO
5.0 2,476 KB

Presentations & Training Material

Presentations

Description Version Size
pdf
Power management for handheld and portable applications
734 KB

Sample & Buy

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Part Number Marketing StatusPackagePacking TypeOutput Voltage (nom) Output Tolerance (%) (typ) Output Current (nom) Automotive GradeOrder From STUnit Price (US$)*
@ 1000
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
LDK120C-RActiveSOT323-5LTape And Reel2.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA60003000
AVNETOrder NowAMERICA60000
ANGLIA LiveOrder NowEUROPE30003000
RUTRONIKOrder NowEUROPE30003000
DIGIKEYOrder NowWORLDWIDE93471
FUTUREOrder NowWORLDWIDE60003000
MOUSEROrder NowWORLDWIDE25611
Ecopack2PDF
XML
LDK120C08RActiveSOT323-5LTape And Reel.82.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
AVNETOrder NowAMERICA60000
DIGIKEYOrder NowWORLDWIDE30001
MOUSEROrder NowWORLDWIDE30001
Ecopack2PDF
XML
LDK120C10RActiveSOT323-5LTape And Reel12.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
AVNETOrder NowAMERICA30000
DIGIKEYOrder NowWORLDWIDE30001
MOUSEROrder NowWORLDWIDE30001
Ecopack2PDF
XML
LDK120C11RActiveSOT323-5LTape And Reel1.12.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA60003000
RUTRONIKOrder NowEUROPE30003000
DIGIKEYOrder NowWORLDWIDE60001
FUTUREOrder NowWORLDWIDE60003000
MOUSEROrder NowWORLDWIDE27001
Ecopack2PDF
XML
LDK120C12RActiveSOT323-5LTape And Reel1.22.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA60003000
AVNETOrder NowAMERICA30000
RUTRONIKOrder NowEUROPE30003000
DIGIKEYOrder NowWORLDWIDE47361
MOUSEROrder NowWORLDWIDE27441
Ecopack2PDF
XML
LDK120C15RActiveSOT323-5LTape And Reel1.52.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA60003000
RUTRONIKOrder NowEUROPE30003000
DIGIKEYOrder NowWORLDWIDE49001
FUTUREOrder NowWORLDWIDE60003000
MOUSEROrder NowWORLDWIDE30001
Ecopack2PDF
XML
LDK120C18RActiveSOT323-5LTape And Reel1.82.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA60003000
ANGLIA LiveOrder NowEUROPE30003000
RUTRONIKOrder NowEUROPE30003000
DIGIKEYOrder NowWORLDWIDE43811
FUTUREOrder NowWORLDWIDE60003000
MOUSEROrder NowWORLDWIDE27401
Ecopack2PDF
XML
LDK120C25RActiveSOT323-5LTape And Reel2.52.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA60003000
AVNETOrder NowAMERICA60000
RUTRONIKOrder NowEUROPE30003000
DIGIKEYOrder NowWORLDWIDE59711
MOUSEROrder NowWORLDWIDE30001
Ecopack2PDF
XML
LDK120C28RActiveSOT323-5LTape And Reel2.82.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
RUTRONIKOrder NowEUROPE30003000
DIGIKEYOrder NowWORLDWIDE59011
FUTUREOrder NowWORLDWIDE60003000
MOUSEROrder NowWORLDWIDE28801
Ecopack2PDF
XML
LDK120C29RActiveSOT323-5LTape And Reel2.92.2_Free SamplesDistributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
AVNETOrder NowAMERICA30000
Farnell Element14Order NowEUROPE30001
DIGIKEYOrder NowWORLDWIDE30001
FUTUREOrder NowWORLDWIDE30003000
Ecopack2PDF
XML
LDK120C30RActiveSOT323-5LTape And Reel32.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA60003000
AVNETOrder NowAMERICA60000
RUTRONIKOrder NowEUROPE30003000
DIGIKEYOrder NowWORLDWIDE54051
MOUSEROrder NowWORLDWIDE30001
Ecopack2PDF
XML
LDK120C31RActiveSOT323-5LTape And Reel3.12.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
AVNETOrder NowAMERICA30000
DIGIKEYOrder NowWORLDWIDE30001
MOUSEROrder NowWORLDWIDE30001
Ecopack2PDF
XML
LDK120C32RActiveSOT323-5LTape And Reel3.22.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
AVNETOrder NowAMERICA30000
DIGIKEYOrder NowWORLDWIDE30001
MOUSEROrder NowWORLDWIDE30001
Ecopack2PDF
XML
LDK120C33RActiveSOT323-5LTape And Reel3.32.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
AVNETOrder NowAMERICA60000
ANGLIA LiveOrder NowEUROPE30003000
RUTRONIKOrder NowEUROPE30003000
DIGIKEYOrder NowWORLDWIDE56051
MOUSEROrder NowWORLDWIDE29451
Ecopack2PDF
XML
LDK120C35RActiveSOT323-5LTape And Reel3.52.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
AVNETOrder NowAMERICA60000
DIGIKEYOrder NowWORLDWIDE29891
MOUSEROrder NowWORLDWIDE29601
Ecopack2PDF
XML
LDK120DM33RActiveSOT23-5LTape And Reel2.2_-No availability reported, please contact our Sales officeEcopack2PDF
XML
LDK120M-RActiveSOT23-5LTape And Reel2.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
AVNETOrder NowAMERICA30000
ANGLIA LiveOrder NowEUROPE30003000
RUTRONIKOrder NowEUROPE30103000
DIGIKEYOrder NowWORLDWIDE44931
FUTUREOrder NowWORLDWIDE30003000
MOUSEROrder NowWORLDWIDE27231
Ecopack2PDF
XML
LDK120M08RActiveSOT23-5LTape And Reel.82.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
AVNETOrder NowAMERICA30000
DIGIKEYOrder NowWORLDWIDE30001
FUTUREOrder NowWORLDWIDE30003000
Ecopack2PDF
XML
LDK120M10RActiveSOT23-5LTape And Reel12.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
AVNETOrder NowAMERICA30000
DIGIKEYOrder NowWORLDWIDE30001
FUTUREOrder NowWORLDWIDE30003000
MOUSEROrder NowWORLDWIDE30001
Ecopack2PDF
XML
LDK120M11RActiveSOT23-5LTape And Reel1.12.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
AVNETOrder NowAMERICA30000
RUTRONIKOrder NowEUROPE30003000
DIGIKEYOrder NowWORLDWIDE57751
MOUSEROrder NowWORLDWIDE29901
Ecopack2PDF
XML
LDK120M12RActiveSOT23-5LTape And Reel1.12.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
AVNETOrder NowAMERICA30000
RUTRONIKOrder NowEUROPE30003000
DIGIKEYOrder NowWORLDWIDE58201
MOUSEROrder NowWORLDWIDE27791
Ecopack2PDF
XML
LDK120M15RActiveSOT23-5LTape And Reel1.52.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
AVNETOrder NowAMERICA30000
RUTRONIKOrder NowEUROPE30003000
DIGIKEYOrder NowWORLDWIDE59881
MOUSEROrder NowWORLDWIDE29801
Ecopack2PDF
XML
LDK120M18RActiveSOT23-5LTape And Reel1.82.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
AVNETOrder NowAMERICA30000
ANGLIA LiveOrder NowEUROPE30003000
RUTRONIKOrder NowEUROPE30003000
DIGIKEYOrder NowWORLDWIDE51881
MOUSEROrder NowWORLDWIDE27201
Ecopack2PDF
XML
LDK120M25RActiveSOT23-5LTape And Reel2.52.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
AVNETOrder NowAMERICA30000
RUTRONIKOrder NowEUROPE30003000
DIGIKEYOrder NowWORLDWIDE59221
MOUSEROrder NowWORLDWIDE29981
Ecopack2PDF
XML
LDK120M28RActiveSOT23-5LTape And Reel2.82.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
AVNETOrder NowAMERICA30000
RUTRONIKOrder NowEUROPE30003000
DIGIKEYOrder NowWORLDWIDE59071
MOUSEROrder NowWORLDWIDE29901
Ecopack2PDF
XML
LDK120M29RActiveSOT23-5LTape And Reel2.2_-No availability reported, please contact our Sales officeEcopack2PDF
XML
LDK120M30RActiveSOT23-5LTape And Reel32.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
AVNETOrder NowAMERICA30000
ANGLIA LiveOrder NowEUROPE30003000
RUTRONIKOrder NowEUROPE30003000
DIGIKEYOrder NowWORLDWIDE59781
FUTUREOrder NowWORLDWIDE30003000
MOUSEROrder NowWORLDWIDE29651
Ecopack2PDF
XML
LDK120M31RActiveSOT23-5LTape And Reel3.12.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
AVNETOrder NowAMERICA30000
DIGIKEYOrder NowWORLDWIDE29701
MOUSEROrder NowWORLDWIDE30001
Ecopack2PDF
XML
LDK120M32RActiveSOT23-5LTape And Reel3.22.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
AVNETOrder NowAMERICA30000
Farnell Element14Order NowEUROPE30001
DIGIKEYOrder NowWORLDWIDE30001
FUTUREOrder NowWORLDWIDE30003000
MOUSEROrder NowWORLDWIDE30001
Ecopack2PDF
XML
LDK120M33RActiveSOT23-5LTape And Reel3.32.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
AVNETOrder NowAMERICA30000
ANGLIA LiveOrder NowEUROPE30003000
RUTRONIKOrder NowEUROPE30003000
DIGIKEYOrder NowWORLDWIDE40001
MOUSEROrder NowWORLDWIDE39421
Ecopack2PDF
XML
LDK120PU-RActiveVFDFPN 6 1.2X1.3X0.45Tape And Reel2.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA28943000
AVNETOrder NowAMERICA30000
DIGIKEYOrder NowWORLDWIDE28301
FUTUREOrder NowWORLDWIDE20001
MOUSEROrder NowWORLDWIDE59701
Ecopack2-
LDK120PU08RActiveVFDFPN 6 1.2X1.3X0.45Tape And Reel.82.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
AVNETOrder NowAMERICA30000
DIGIKEYOrder NowWORLDWIDE30001
FUTUREOrder NowWORLDWIDE30003000
MOUSEROrder NowWORLDWIDE30001
Ecopack2-
LDK120PU10RActiveVFDFPN 6 1.2X1.3X0.45Tape And Reel12.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
AVNETOrder NowAMERICA30000
DIGIKEYOrder NowWORLDWIDE28971
FUTUREOrder NowWORLDWIDE30003000
MOUSEROrder NowWORLDWIDE30001
Ecopack2-
LDK120PU12RActiveVFDFPN 6 1.2X1.3X0.45Tape And Reel1.22.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
AVNETOrder NowAMERICA30000
DIGIKEYOrder NowWORLDWIDE28401
FUTUREOrder NowWORLDWIDE30003000
MOUSEROrder NowWORLDWIDE30001
Ecopack2-
LDK120PU18RActiveVFDFPN 6 1.2X1.3X0.45Tape And Reel1.82.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
AVNETOrder NowAMERICA30000
DIGIKEYOrder NowWORLDWIDE29401
MOUSEROrder NowWORLDWIDE30001
Ecopack2-
LDK120PU25RActiveVFDFPN 6 1.2X1.3X0.45Tape And Reel2.52.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
AVNETOrder NowAMERICA30000
DIGIKEYOrder NowWORLDWIDE27941
MOUSEROrder NowWORLDWIDE30001
Ecopack2-
LDK120PU29RActiveVFDFPN 6 1.2X1.3X0.45Tape And Reel2.2_-Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
AVNETOrder NowAMERICA30000
Farnell Element14Order NowEUROPE30001
DIGIKEYOrder NowWORLDWIDE30001
FUTUREOrder NowWORLDWIDE30003000
MOUSEROrder NowWORLDWIDE30001
Ecopack2-
LDK120PU30RActiveVFDFPN 6 1.2X1.3X0.45Tape And Reel32.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
AVNETOrder NowAMERICA60000
DIGIKEYOrder NowWORLDWIDE29501
MOUSEROrder NowWORLDWIDE60001
Ecopack2-
LDK120PU32RActiveVFDFPN 6 1.2X1.3X0.45Tape And Reel3.22.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
AVNETOrder NowAMERICA30000
DIGIKEYOrder NowWORLDWIDE30001
FUTUREOrder NowWORLDWIDE30003000
MOUSEROrder NowWORLDWIDE30001
Ecopack2-
LDK120PU33RActiveVFDFPN 6 1.2X1.3X0.45Tape And Reel3.32.2_Free Samples.239Distributor reported inventory date: 2014-08-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
AVNETOrder NowAMERICA30000
DIGIKEYOrder NowWORLDWIDE29401
FUTUREOrder NowWORLDWIDE30003000
MOUSEROrder NowWORLDWIDE30001
Ecopack2-

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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