Texas Instruments LP3988 Bruksanvisning
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LP3988
SNVS161E–OCTOBER2001–REVISEDOCTOBER2015
LP3988Micropower,150-mAUltra-Low-DropoutCMOSVoltageRegulator
WithPowerGood
1Features3Description
TheLP3988isa150-mAlowdropoutregulator
1
•InputVoltageRange:2.5Vto6V
designedspeciallytomeetrequirementsofportable
•OutputCurrent:150mA
batteryapplications.TheLP3988isdesignedtowork
•PSRRat10kHz:40dB
withspace-saving,small1-µFceramiccapacitors.
TheLP3988featuresaPowerGood(PG)outputthat
•QuiescentCurrentWhenShutDown:≤1µA
indicatesafaultyoutputcondition.Thedeviceisideal
•FastTurnonTime:100µs(Typical)
formobilephoneandsimilarbattery-powered
•DropoutWith150-mAload:80mV(Typical)
wirelessapplications.Itprovidesupto150mAoutput
currentfroma2.5-Vto6-Vinput,consumingless
•JunctionTemperatureRangeforOperation:
than1µAindisablemodeandhasfastturnontime
−40°Cto+125°C
lessthan200µs.
•Power-GoodFlagOutput
TheLP3988device'sperformanceisoptimizedfor
•LogicControlledEnable
battery-poweredsystemstodeliverlownoise,
•ThermalShutdownandShort-CircuitCurrentLimit
extremelylowdropoutvoltage,andlowquiescent
•StablewithCeramicandHigh-QualityTantalum
current.Regulatorgroundcurrentincreasesonly
Capacitors
slightlyindropout,furtherprolongingthebatterylife.
Powersupplyrejectionisbetterthan60dBatlow
2Applications
frequenciesandstartstorolloffat10kHz.High
•CDMACellularHandsets
power-supplyrejectionismaintaineddowntolower
input-voltagelevelscommontobattery-operated
•WidebandCDMACellularHandsets
circuits.
•GSMCellularHandsets
TheLP3988isavailableina5-pinSOT-23package
•PortableInformationAppliances
anda5-pinthinDSBGApackage.Performanceis
•Tiny3.3V±5%to2.85V,150-mAConverter
specifiedfor−40°Cto+125°Ctemperaturerange.For
allavailableoutputvoltageandpackageoptions,see
thePackageOptionAddendum(POA)attheendof
thedatasheet.
DeviceInformation
(1)
PARTNUMBERPACKAGEBODYSIZE(NOM)
SOT-23(5)2.90mm×1.60mm
LP3988
DSBGA(5)1.502mm×1.045mm
(2)
(1)Forallavailablepackages,seetheorderableaddendumat
theendofthedatasheet.
(2)Bodysizedimensionismaximum.
SimplifiedSchematic
1
AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,
intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.
Produktspecifikationer
| Varumärke: | Texas Instruments |
| Kategori: | ej kategoriserat |
| Modell: | LP3988 |
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