Texas Instruments LP3910 Handleiding

Bekijk gratis de handleiding van Texas Instruments LP3910 (77 pagina’s), behorend tot de categorie Niet gecategoriseerd. Deze gids werd als nuttig beoordeeld door 2 mensen en kreeg gemiddeld 4.7 sterren uit 5 reviews. Heb je een vraag over Texas Instruments LP3910 of wil je andere gebruikers van dit product iets vragen? Stel een vraag

USB Controller

Battery

Apps Processor

Audio

Touch

HDD

Memory

LP3910

Buck-Boost

LDO2

LDO1

Buck2

Buck1

Linear Charger

ACDC Wall Adapter

Battery Monitor

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

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.

Product specificaties