Texas Instruments LP8758-B0 Handleiding

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Output Current (A)

Efficiency (%)

0.0010.010.11102020

50

55

60

65

70

75

80

85

90

95

D038

1.2 V

1.0 V

SW_B0

SW_B1

SW_B2

SW_B3

VIN_B0

VIN_B1

VIN_B2

VIN_B3

VANA

V

IN

FB_B0

FB_B1

V

OUT

LOAD

LP8758

FB_B2

FB_B3

NRST

SDA

SCL

nINT

EN1

EN2GNDs

Product

Folder

Order

Now

Technical

Documents

Tools &

Software

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Community

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

LP8758-B0

SNVSA06C–MARCH2015–REVISEDAUGUST2018

LP8758-B0Four-PhaseDC/DCStep-DownConverter

1

1Features

1

•High-EfficiencyStep-DownFour-PhaseDC/DC

ConverterCores:

–MaximumOutputCurrent16A

–AutoPWM-PFMandForced-PWMOperations

–AutoPhaseAdding/SheddingandForceMulti-

PhaseOperations

–RemoteDifferentialFeedbackVoltageSensing

–ProgrammableOutputVoltageSlew-Ratefrom

30mV/µsto0.5mV/µs

–V

OUT

Range=0.5Vto3.36VwithDVS

•ProgrammableStart-upandShutdownDelays

withEnableSignal

•I

2

C-CompatibleInterfacewhichSupportsStandard

(100kHz),Fast(400kHz),Fast+(1MHz),and

High-Speed(3.4MHz)Modes

•InterruptFunctionwithProgrammableMasking

•LoadCurrentMeasurement

•OutputShort-CircuitandOverloadProtection

•Spread-SpectrumModeandPhaseInterleaving

forEMIReduction

•OvertemperatureWarningandProtection

•UndervoltageLockout(UVLO)

2Applications

•SmartPhones,eBooksandTablets

•GamingDevices

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

3Description

TheLP8758isdesignedtomeetthepower

managementrequirementsofthelatestapplication

processorsinmobilephonesandsimilarportable

applications.Thedevicecontainsfourstep-down

DC/DCconvertercores,whicharebundledtogether

inasingle4-phasebuckconverter.Thedeviceis

controlledbyanI

2

C-compatibleserialinterface.

TheautomaticPWM-PFM(AUTOmode)operation,

togetherwiththeautomaticphaseadding/shedding,

maximizesefficiencyoverawideoutput-current

range.TheLP8758supportsremotedifferential

voltagesensingtocompensateIRdropbetweenthe

regulatoroutputandthepoint-of-load,thusimproving

theaccuracyoftheoutputvoltage.

TheLP8758supportsprogrammablestart-upand

shutdowndelayssynchronizedtoEnablesignal.

Theprotectionfeaturesincludeshort-circuit

protection,currentlimits,inputsupplyUVLO,and

temperaturewarningandshutdownfunctions.

Severalerrorflagsareprovidedforstatusinformation

ofthedevice.Inaddition,theLP8758devicesupports

loadcurrentmeasurementwithouttheadditionof

externalcurrentsenseresistors.Duringstart-upand

voltagechange,thedevicecontrolstheoutputslew

ratetominimizeoutputvoltageovershootandthe

inrushcurrent.

DeviceInformation

(1)

PARTNUMBERPACKAGEBODYSIZE(NOM)

LP8758-B0DSBGA(35)2.88mm×2.13mm

4SimplifiedSchematic

EfficiencyvsOutputCurrent(V

IN

=3.7V)

Product specificaties