Datasheet Texas Instruments LP2951-33D

ManufacturerTexas Instruments
SeriesLP2951
Part NumberLP2951-33D
Datasheet Texas Instruments LP2951-33D

30V, 100mA Micropower Voltage Regulators with Shutdown 8-SOIC -40 to 125

Datasheets

LP295x Adjustable Micropower Voltage Regulators with Shutdown datasheet
PDF, 3.7 Mb, Revision: I, File published: Nov 12, 2014
Extract from the document

Prices

Status

Lifecycle StatusActive (Recommended for new designs)
Manufacture's Sample AvailabilityNo

Packaging

Pin8
Package TypeD
Industry STD TermSOIC
JEDEC CodeR-PDSO-G
Package QTY75
CarrierTUBE
Device MarkingKY5133
Width (mm)3.91
Length (mm)4.9
Thickness (mm)1.58
Pitch (mm)1.27
Max Height (mm)1.75
Mechanical DataDownload

Parametrics

Accuracy3 %
Fixed Output Options3,3.3,5 V
Iout(Max)0.1 A
Iq(Typ)0.075 mA
Noise160 uVrms
Operating Temperature Range-40 to 125 C
Output Capacitor TypeNon-Ceramic
Output OptionsAdjustable Output,Fixed Output
PSRR @ 100KHz57 dB
Package GroupSOIC
Package Size: mm2:W x L8SOIC: 29 mm2: 6 x 4.9(SOIC) PKG
RatingCatalog
Regulated Outputs1
Special FeaturesEnable,Power Good
Thermal Resistance ОёJA52 В°C/W
Vdo(Typ)380 mV
Vin(Max)30 V
Vin(Min)2 V
Vout(Max)29 V
Vout(Min)1.2 V

Eco Plan

RoHSCompliant

Design Kits & Evaluation Modules

  • Evaluation Modules & Boards: LP2951EVM
    LP2951 Fixed/Adjustable Micropower Low-Dropout (LDO) Regulator Evaluation Module
    Lifecycle Status: Active (Recommended for new designs)

Application Notes

  • A Topical Index of TI LDO Application Notes (Rev. F)
    PDF, 82 Kb, Revision: F, File published: Jun 27, 2019
  • Techniques for accurate PSRR measurements
    PDF, 1.9 Mb, File published: Oct 28, 2013
  • Fundamental Theory of PMOS LDO Voltage Regulators
    PDF, 66 Kb, File published: May 7, 1999
    This report presents a fundamental understanding on the theory of low-dropout voltage regulators using a PMOS FET as the pass element to adjust the output current to the load requirements.
  • Digital Designer's Guide to Linear Voltage Regulators & Thermal Mgmt (LDO) (Rev. A)
    PDF, 509 Kb, Revision: A, File published: Jun 4, 2008
  • A Topical Index of TI Supply Voltage Supervisor (SVS) Application Notes
    PDF, 56 Kb, File published: Jun 15, 2015
  • 3.6V - 5.5V Input LDO Reference Design for MSP430 (Rev. A)
    PDF, 110 Kb, Revision: A, File published: Jun 14, 2010
    This reference design is presented to help application designers and others who are trying to use the MSP430 in a system with an input voltage in the range of 3.6 V to 5.5 V and who are also interested in using an easy-to-use low-dropout linear regulator (LDO) for a simple design but may not be as concerned about maintaining the highest possible efficiency or longest battery life.
  • Linear and Switching Voltage Regulator Fundamental Part 1
    PDF, 183 Kb, File published: Mar 21, 2007
  • Low Power 150-mA LDO Linear Regulators. Extended Output Voltage Adjustment Range
    PDF, 41 Kb, File published: Jun 11, 1999
    The TPS76301 low-dropout (LDO) adjustable linear regulator generates a regulated 1-V output from an input voltage ranging from 3 V to 6 V. The application circuit is based on the application detailed in the TPS76301 data sheet (TI Literature number SLVS181A Figure 21) except for the auxiliary circuit which is shown here in Figure 1.
  • LDO Noise Demystified (Rev. A)
    PDF, 785 Kb, Revision: A, File published: Aug 9, 2017
    Thisapplicationreportexplainsthe differencebetweennoiseand PSRRof an LDO.It also explainsthedifferentwaysnoiseis specifiedin LDOdatasheetsandwhichspecificationshouldbe usedin theapplication.Finallyit explainshow LDOnoiseis reduced.
  • ESR Stability and the LDO Regulator
    PDF, 83 Kb, File published: May 7, 2002
    Choosing an output capacitor for LDO regulators with PNP or PMOS pass element can be difficult to specific ESR requirements. This application note explains why higher ESR capacitors are necessary how to chose them and how to determine whether or not the regulator is stable.
  • AN-1950 Silently Powering Low Noise Applications (Rev. A)
    PDF, 10.5 Mb, Revision: A, File published: Apr 22, 2013
    This application report explains how to implement a low noise switch mode power supply solution. Itintroduces the sources of noise and explain how to minimize them. A big factor in noise generation andpropagation is the printed circuit board layout. Important basics are discussed. Circuit measurementtechniques are also explained to guide a design engineer towards a low noise but efficient so
  • Battery Charging
    PDF, 146 Kb, File published: Mar 21, 2007
  • Extending the Input Voltage Range of an LDO Regulator
    PDF, 32 Kb, File published: Aug 16, 2002
    This application report explains how to use a FET to overcome the input voltage limitation of a linear regulator.
  • 3.6V - 5.5V Input LDO with Dual-Level Output Reference Design for MSP430 (Rev. A)
    PDF, 199 Kb, Revision: A, File published: Jun 14, 2010
    This reference design is presented to help application designers and others who are trying to use the MSP430 in a system with an input voltage in the range of 3.6 V to 5.5 V and who are also interested in using an easy-to-use low-dropout linear regulator (LDO) for a simple design with extended battery life by putting the MSP430 into a low-power state between operating states.
  • Understanding the Terms and Definitions of LDO Voltage Regulators
    PDF, 197 Kb, File published: Oct 21, 1999
    This report provides an understanding of the terms and definitions of low dropout (LDO) voltage regulators and describes fundamental concepts including dropout voltage quiescent current standby current efficiency transient response line/load regulation power supply rejection output noise voltage accuracy and power dissipation. Each section includes an example to increase the understandab
  • Simple Power Solution Using LDOs for the DM365 (Rev. A)
    PDF, 104 Kb, Revision: A, File published: Sep 11, 2009
  • AN-1028 Maximum Power Enhancement Techniques for Power Packages (Rev. B)
    PDF, 684 Kb, Revision: B, File published: May 6, 2013
    The purpose of this application report is to aid the user in maximizing the power handling capability of Texas Instruments power packages by using the SOT-223 as an example.
  • Ceramic Capacitors Replace Tantalum Capacitors in LDOs (Rev. A)
    PDF, 44 Kb, Revision: A, File published: Oct 13, 2006
    With the proper considerations ceramic output capacitors can be used with low dropout regulators (LDO) and DC/DC switching converters that require tantulum output capacitors.
  • Understanding LDO Dropout
    PDF, 52 Kb, File published: May 9, 2005
    Not all low dropout (LDO) linear regulator data sheets provide the voltage dropout information needed for all applications. This application report shows a designer how to use an LDO data sheet's specified dropout performance to determine the dropout voltage at other operating conditions.
  • Technical Review of Low Dropout Voltage Regulator Operation And Performance
    PDF, 284 Kb, File published: Aug 30, 1999
    This application report provides a technical review of low dropout (LDO) voltage regulators and describes fundamental concepts including dropout voltage quiescent current and topologies. The report also includes detailed discussions of load/line regulation efficiency frequency response range of stable ESR and accuracy of LDO voltage regulators.
  • Low-Voltage Current Loop Transmitter
    PDF, 519 Kb, File published: Aug 2, 2007
  • AN-1482 LDO Regulator Stability Using Ceramic Output Capacitors (Rev. A)
    PDF, 169 Kb, Revision: A, File published: Apr 25, 2013
    Ultra-low ESR capacitors such as ceramics are highly desirable because they can support fast-changingload transients and also bypass very high frequency noise coming from switching converter powersources which a linear regulator can not reject. However using ultra-low ESR capacitors on the output ofan LDO regulator requires that specific design changes be implemented to ensure loop stabili
  • LDO PSRR Measurement Simplified (Rev. A)
    PDF, 131 Kb, Revision: A, File published: Aug 9, 2017
    This applicationreportexplainsdifferentmethodsof measuringthe PowerSupplyRejectionRatio(PSRR)of a Low-Dropout(LDO)regulatorand includesthe prosand consof thesemeasuringmethods
  • AN-1815 LDOs Ease the Stress of Start-Up (Rev. A)
    PDF, 81 Kb, Revision: A, File published: Apr 24, 2013
    The LP38851/52/53 devices with soft-start provide a reliable way to ensure that start-up into highcapacitive loads is uneventful and stress free.
  • AN-1061 Power Conversion in Line-Powered Equipment (Rev. B)
    PDF, 406 Kb, Revision: B, File published: Apr 23, 2013
    This application note describes line-powered equipment and power conversion techniques or methods tosolve those typical power needs.
  • LDO Performance Near Dropout
    PDF, 149 Kb, File published: Oct 8, 2010
  • Packaging Limits Range of Linear Regulators
    PDF, 75 Kb, File published: May 8, 2010
    The power limitations of the physical packaging for a linear regulator device can limit the total output current or the input-to-output voltage differential. This inherent limitation is not always apparent from the product data sheet and must be evaluated during the design phase. This application note shows how the package can limit the operating envelope of a linear regulator.

Model Line

Manufacturer's Classification

  • Semiconductors > Power Management > Linear Regulator (LDO) > Single Channel LDO

Other Names:

LP295133D, LP2951 33D

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