Texas Instruments LP8754 Bruksanvisning
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EFFICIENCY (%)
OUTPUT CURRENT (mA)
Low-Power PFM Mode
PFM Mode
PWM Mode
C027
V
IN
= 3.7 V, V
OUT
= 1.1 V
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LP8754
SNVS861A–FEBRUARY2014–REVISEDAUGUST2014
LP8754Multi-PhaseSix-CoreStep-DownConverter
1Features3Description
TheLP8754isdesignedtomeetthepower
1
•SixHigh-EfficiencyStep-DownDC/DCConverter
managementrequirementsofthelatestapplications
Cores:
processorsinmobilephonesandsimilarportable
–MaxOutputCurrent10A
applications.Thedevicecontainssixstep-down
–CoresBundledtoa6-PhaseConverter
DC/DCconvertercores,whicharebundledtogether
ina6-phasebuckconverter.Thedeviceisfully
–LoadCurrentReporting
controlledbyaDynamicVoltageScaling(DVS)
–ProgrammableOvercurrentProtection(OCP)
interfaceoranI
2
C-compatibleserialinterface.
–AutoPWM/PFMandForced-PWMOperations
TheautomaticPWM/PFMoperationtogetherwiththe
andAutomaticLowPower-ModeSetting
automaticphaseadding/sheddingmaximizes
–AutomaticPhaseAdding/Shedding
efficiencyoverawideoutputcurrentrange.The
LP8754supportsremotedifferentialvoltagesensing
–RemoteDifferentialFeedbackVoltageSensing
tocompensateIRdropbetweentheregulatoroutput
–OutputVoltageRampControl
andthepoint-of-loadthusimprovingtheaccuracyof
–V
OUT
Range=0.6Vto1.67V
theoutputvoltage.
•I
2
C-CompatibleInterfacewhichSupportsStandard
Theprotectionfeaturesincludeshort-circuit
(100kHz),Fast(400kHz),andHigh-Speed(3.4
protection,currentlimits,inputOVP,UVLO,
MHz)Modes
temperaturewarning,andshutdownfunctions.
•FourSelectableI
2
CAddresses
Severalerrorflagsareprovidedforstatusinformation
oftheIC.Inaddition,I
2
Cread-backincludestotal
•InterruptFunctionwithProgrammableMasking
loadcurrentandloadcurrentforeachbuckcore:The
•OutputShort-CircuitandInputOvervoltage
LP8754hastheabilitytosensecurrentbeing
Protection(OVP)
deliveredtotheloadwithouttheadditionofcurrent
•SpreadSpectrumandPhaseControlforEMI
senseresistors.Duringstart-up,thedevicecontrols
Reduction
theoutputvoltageslewratetominimizeovershoot
andtheinrushcurrent.
•OvertemperatureProtection(OTP)
•UndervoltageLock-out(UVLO)
DeviceInformation
(1)
PARTNUMBERPACKAGEBODYSIZE(MAX)
2Applications
LP8754DSBGA(49)3.022mmx2.882mm
•SmartPhones,eBooksandTablets
(1)Forallavailablepackages,seetheorderableaddendumat
•GSM,GPRS,EDGE,LTE,CDMAandWCDMA
theendofthedatasheet.
Handsets
Efficiencyvs.LoadCurrent
•GamingDevices
1
AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,
intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.
Produktspecifikationer
| Varumärke: | Texas Instruments |
| Kategori: | ej kategoriserat |
| Modell: | LP8754 |
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