Texas Instruments LP3910 Bruksanvisning
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LP3910
SNVS481M–NOVEMBER2006–REVISEDDECEMBER2015
LP3910PowerManagementICforHard-Drive-BasedPortableMediaPlayers
1Features2Applications
1
•TwoLow-DropoutRegulatorsWithProgrammable
•HardDrive-BasedMediaPlayers
OutputVoltages:
•PortableGamingPlayers
–LDO1forGeneralPurposeApplications
•PortableNavigationDevices
–LDO2forLow-NoiseAnalogApplications
3Description
•GreenandRedLED-ChargerStatusDrivers
TheLP3910isaprogrammablesystempower
•4-Channel8-BitDualSlope
managementunitoptimizedforHDD-basedportable
Analog-to-Digital(ADC)Converter
mediaplayers.Thedeviceincorporatestwolow-
•2High-EfficiencyDVSBuckConverters
dropoutLDOvoltageregulators,twointegratedbuck
DC-DCconverterswithdynamicvoltagescaling
•WideLoadRangeBuck-BoostDC-DCConverter
(DVS),onewideload-rangebuck-boostDC-DC
•400-kHzI
2
C-CompatibleInterface
converterwithprogrammableoutputvoltage,a4-
•LinearConstant-CurrentandConstant-Voltage
channel,8-bitADC,andadual-sourcelithium-ionor
ChargerforSingle-CellLithium-IonBatteries
lithium-polymerbatterycharger.
•USBandAdapterCharging
TheLP3910alsoincorporatessomeadvanced
•SystemPowerSupplyManagement
batterymanagementfunctionssuchasbattery
temperaturemeasurement,reversecurrentblocking
•VoltageandThermalSupervisoryCircuits
forUSB,LED-chargerstatusindication,thermally
•ContinuousBatteryVoltageMonitoring
regulatedinternalpowerFETs,battery-voltage
•InterruptRequestOutputWith8Sources
monitoring,overcurrentprotection,anda10-hour
•50-mΩBatteryPathResistance
safetytimer.Thedeviceisprogrammablethrougha
400-kHzI2C-compatibleinterface.
•100-mAto1000-mAFull-RateChargeCurrent
UsingWallAdapter
TheLP3910isavailableinathermally-enhanced
6-mm×6-mm×0.8-mm48-pinWQFNpackage.
•Selectable0.05Cand0.1CEnd-of-Charge(EOC)
Current
DeviceInformation
(1)
•USBCurrentLimitsof100,500,and800mA
PARTNUMBERPACKAGEBODYSIZE(NOM)
•USBPre-QualificationCurrentof50mA
LP3910WQFN(48)6.00mm×6.00mm
•Selectable4.1-V,4.2-Vor4.38-VBattery-
(1)Forallavailablepackages,seetheorderableaddendumat
TerminationVoltages
theendofthedatasheet.
•0.35%Battery-TerminationAccuracy
•±1LSBINL/DNLon8-BitADC
SimplifiedBlockDiagram
1
AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,
intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.
Produktspecifikationer
| Varumärke: | Texas Instruments |
| Kategori: | ej kategoriserat |
| Modell: | LP3910 |
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