Datasheet Texas Instruments LP2981-33 — Datenblatt

Hersteller	Texas Instruments
Serie	LP2981-33

Datenblätter

Preise

Status

Verpackung

Parameter

Parameters / Models	LP2981-33DBVRG4
Accuracy(%)	2.5
Approx. Price (US$)	0.19 | 1ku
Fixed Output Options(V)	3.3
Iout(Max)(A)	0.1
Iq(Typ)(mA)	0.065
Noise(uVrms)	160
Operating Temperature Range(C)	-40 to 125
Output Capacitor Type	Ceramic Non-Ceramic
Output Options	Fixed Output
PSRR @ 100KHz(dB)	29
Package Group	SOT-23
Package Size: mm2:W x L (PKG)	See datasheet (DSBGA)
Rating	Catalog
Regulated Outputs(#)	1
Special Features	Enable
Thermal Resistance ОёJA(В°C/W)	205
Vdo(Typ)(mV)	200
Vin(Max)(V)	16
Vin(Min)(V)	2.2
Vout(Max)(V)	3.3
Vout(Min)(V)	3.3

Öko-Plan

Anwendungshinweise

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  A Topical Index of TI LDO Application Notes (Rev. F)
  PDF, 82 Kb, Revision: F, Datei veröffentlicht: Jun 27, 2019
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  Techniques for accurate PSRR measurements
  PDF, 1.9 Mb, Datei veröffentlicht: Oct 28, 2013
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  Fundamental Theory of PMOS LDO Voltage Regulators
  PDF, 66 Kb, Datei veröffentlicht: 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.
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  Digital Designer's Guide to Linear Voltage Regulators & Thermal Mgmt (LDO) (Rev. A)
  PDF, 509 Kb, Revision: A, Datei veröffentlicht: Jun 4, 2008
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  A Topical Index of TI Supply Voltage Supervisor (SVS) Application Notes
  PDF, 56 Kb, Datei veröffentlicht: Jun 15, 2015
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  3.6V - 5.5V Input LDO Reference Design for MSP430 (Rev. A)
  PDF, 110 Kb, Revision: A, Datei veröffentlicht: 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.
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  Linear and Switching Voltage Regulator Fundamental Part 1
  PDF, 183 Kb, Datei veröffentlicht: Mar 21, 2007
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  LDO PSRR Measurement Simplified (Rev. A)
  PDF, 131 Kb, Revision: A, Datei veröffentlicht: Aug 9, 2017
  This applicationreportexplainsdifferentmethodsof measuringthe PowerSupplyRejectionRatio(PSRR)of a Low-Dropout(LDO)regulatorand includesthe prosand consof thesemeasuringmethods
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  Low Power 150-mA LDO Linear Regulators. Extended Output Voltage Adjustment Range
  PDF, 41 Kb, Datei veröffentlicht: 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.
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  ESR Stability and the LDO Regulator
  PDF, 83 Kb, Datei veröffentlicht: 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.
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  AN-1950 Silently Powering Low Noise Applications (Rev. A)
  PDF, 10.5 Mb, Revision: A, Datei veröffentlicht: 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
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  LDO Noise Demystified (Rev. A)
  PDF, 785 Kb, Revision: A, Datei veröffentlicht: Aug 9, 2017
  Thisapplicationreportexplainsthe differencebetweennoiseand PSRRof an LDO.It also explainsthedifferentwaysnoiseis specifiedin LDOdatasheetsandwhichspecificationshouldbe usedin theapplication.Finallyit explainshow LDOnoiseis reduced.
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  Extending the Input Voltage Range of an LDO Regulator
  PDF, 32 Kb, Datei veröffentlicht: Aug 16, 2002
  This application report explains how to use a FET to overcome the input voltage limitation of a linear regulator.
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  3.6V - 5.5V Input LDO with Dual-Level Output Reference Design for MSP430 (Rev. A)
  PDF, 199 Kb, Revision: A, Datei veröffentlicht: 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.
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  Understanding the Terms and Definitions of LDO Voltage Regulators
  PDF, 197 Kb, Datei veröffentlicht: 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
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  Simple Power Solution Using LDOs for the DM365 (Rev. A)
  PDF, 104 Kb, Revision: A, Datei veröffentlicht: Sep 11, 2009
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  AN-1028 Maximum Power Enhancement Techniques for Power Packages (Rev. B)
  PDF, 684 Kb, Revision: B, Datei veröffentlicht: 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.
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  Ceramic Capacitors Replace Tantalum Capacitors in LDOs (Rev. A)
  PDF, 44 Kb, Revision: A, Datei veröffentlicht: 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.
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  Understanding LDO Dropout
  PDF, 52 Kb, Datei veröffentlicht: 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.
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  Technical Review of Low Dropout Voltage Regulator Operation And Performance
  PDF, 284 Kb, Datei veröffentlicht: 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.
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  AN-1482 LDO Regulator Stability Using Ceramic Output Capacitors (Rev. A)
  PDF, 169 Kb, Revision: A, Datei veröffentlicht: 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
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  AN-1815 LDOs Ease the Stress of Start-Up (Rev. A)
  PDF, 81 Kb, Revision: A, Datei veröffentlicht: 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.
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  LDO Performance Near Dropout
  PDF, 149 Kb, Datei veröffentlicht: Oct 8, 2010
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  Packaging Limits Range of Linear Regulators
  PDF, 75 Kb, Datei veröffentlicht: 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.

Modellreihe

Herstellerklassifikation

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