矽力杰 Silergy SY8827N 2.6-5.5V 输入 6A 输出高效同步降压稳压器 规格书 (Datasheet)佰祥电子

SY8827N

HighEfficiency5.5V,6A,2.4MHz

I2CProgrammable,SynchronousStepDownRegulator

GeneralDescriptionFeatures

SY8827Nisahighefficiency2.4MHzsynchronousstepInputVoltageRange:2.6Vto5.5V

downDC/DCregulatorcapableofdeliveringupto6A2.4MHzSwitchingFrequencyMinimizesthe

outputcurrents.ItcanoperateoverawideinputvoltageExternalComponents

rangefrom2.6Vto5.5VandintegratemainswitchandTypical65µAQuiescentCurrent

synchronousswitchwithverylowRDS(ON)tominimizetheLowRDS(ON)forInternalSwitches(PFET/NFET):

conductionloss.Theoutputvoltagecanbeprogrammed28mΩ/17mΩ

from0.6Vto1.3875VthroughI2Cinterface.ProgrammableOutputVoltage:0.6Vto1.3875Vin

12.5mVSteps

SY8827Nisinaspacesaving,lowprofileCSP1.56*1.96-

20package.6AContinuousOutputCurrentCapability.

Capablefor0.33µHor0.25µHInductorand22µF

OrderingInformationCeramicCapacitor.

SY8827□(□□)□Hic-cupModeProtectionforHardShortCondition

TemperatureCodeRoHSCompliantandHalogenFree

PackageCodeCompactpackage:CSP1.56*1.96-20

OptionalSpecCode

OrderingNumberPackageTypeNoteApplications

SY8827NPKCCSP1.56*1.96-206A

Smart-phone

Web-tablet

TypicalApplications

Efficiencyvs.OutputCurrent

SY8827N90

L1:0.33µH/0.25µH

VIN:2.6~5.5VVOUT

VINSW

85

CINCOUT

K1K2VOUT

22µF/6.3V22µF/6.3V)

%

(

80

VSELy

c

n

e

SCLi

c

ENi

f75

f

SDAE

R1R2

GNDAGNDVIN=3.3V,VOUT=0.8V

1MΩ1MΩ

70VIN=4.2V,VOUT=0.8V

VIN=5.0V,VOUT=0.8V

65

0.010.1110

OutputCurrent(A)

Figure1.SchematicDiagramFigure2.Efficiency

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SY8827N

Pinout(topview)

1234

AVSELENSCLVOUT

BSDAGNDGNDAGND

CGNDGNDGNDGND

DVINVINSWSW

EVINVINSFWBSW

PartNumberPackagetypeTopMark①

SY8827NPKCCSP1.56*1.96-20Ypxyz

Note①：x=yearcode,y=weekcode,z=lotnumbercode.

PinPinNamePinDescription

Powerinputpin.Thesepinsmustbedecoupledtogroundwithatleast

D1,D2,E1,E2VINa22µFceramiccapacitor.Theinputcapacitorshouldbeplacedas

closeaspossiblebetweenVINandGNDpins.

Switchingnodepin.Connectthesepinstotheswitchingnodeofthe

D3,D4,E3,E4SW

inductor.

B2,B3,C1,C2,C3,C4GNDPowergroundpins.

Voltageselectpin.Whenthispinislow,VOUTwillbesetbythe

A1VSELVSEL0register.Whenthispinishigh,VOUTwillbesetbytheVSEL1

register.

Enablecontrolpin.Activehigh.Donotleaveitfloating.

A2ENIfENpinislow,theDC/DCconverterwillbeturnedoff,andallI2C

registerswillberesettodefaultvalues.

B1SDAI2CinterfaceBi-directionalDataline.

B4AGNDAnaloggroundpin.

A3SCLI2Cinterfaceclockline.

A4VOUTSensepinforoutput.Connectittotheoutputcapacitorside.

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SY8827N

BlockDiagram

VIN

Internal

InputUVLO

PowerCurrent

Sensor

EN

SW

VSEL

Control

Logic

SCL

Current

Sensor

SDA

GND

VOUT

Thermal

Sensor

SoftStart

AGND

Figure3.BlockDiagram

AbsoluteMaximumRatings(Note1)

VIN---------------------------------------------------------------------------------------------------------------------------6.0V

AllOtherPins--------------------------------------------------------------------------------------------------------VIN+0.6V

PowerDissipation,PD@TA=25°CCSP1.56*1.96-20--------------------------------------------------------------2.6W

PackageThermalResistance(Note2)

θJA------------------------------------------------------------------------------------------------------------38°C/W

JC-------------------------------------------------------------------------------------------------------------8°C/W

JunctionTemperatureRange--------------------------------------------------------------------------------40°Cto150°C

LeadTemperature(Soldering,10sec.)-------------------------------------------------------------------------------260°C

StorageTemperatureRange----------------------------------------------------------------------------------65°Cto150°C

RecommendedOperatingConditions(Note3)

SupplyInputVoltage--------------------------------------------------------------------------------------------2.6Vto5.5V

JunctionTemperatureRange---------------------------------------------------------------------------------40°Cto125°C

AmbientTemperatureRange----------------------------------------------------------------------------------40°Cto85°C

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SY8827N

ElectricalCharacteristics

(VIN=5V,VOUT=0.8V,L=0.33µH,COUT=22µF,TA=25°C,unlessotherwisespecified.)

ParameterSymbolTestConditionsMinTypMaxUnit

InputVoltageRangeV2.65.5V

IN

InputUVLOThresholdV2.452.58V

UVLO

InputUVLOHysteresisV0.15V

HYS

QuiescentCurrentIVFB=VREF×105%65µA

Q

ISHDN,H/WVEN=0V0.11µA

ShutdownCurrent

IVEN=VIN,Buck_Enx=041µA

SHDN,S/W

ForcedPWM,

OutputVoltageSet-pointVSET-1.5+1.5%

VOUT=VSEL0,defaultvalue

SWNodeDischargeResistanceR150Ω

DIS

TopFETRR28mΩ

ONDS(ON)1

BottomFETRR17mΩ

ONDS(ON)2

EN,VSEL,SDA,SCL

InputVoltageHighV1.1V

IH

InputVoltageLowV0.4V

IL

MinONTimet40ns

ON,MIN

Soft-startTimet0.3ms

SS

SwitchingFrequencyFCCM2.4MHz

SW

TopFETCurrentLimitI7.5A

LMT,TOP

BottomFETCurrentLimitI6A

LMT,BOT

InputOverVoltageRisingThreshold6.15V

VOVP

ThresholdFallingThreshold5.55.85V

InputOVPDelayt20µs

OVP,DLY

ThermalShutdown

T150˚C

TemperatureSD

ThermalShutdown

T15˚C

HysteresisHYS

Note1:Stressesbeyondthe“AbsoluteMaximumRatings”maycausepermanentdamagetothedevice.Theseare

stressratingsonly.Functionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedinthe

operationalsectionsofthespecificationisnotimplied.Exposuretoabsolutemaximumratingconditionsfor

extendedperiodsmayaffectdevicereliability.

Note2:θJAofSY8827NPKCismeasuredinthenaturalconvectionatTA=25°Cona2OZtwo-layerSilergy

evaluationboard.PaddleofCSP1.56*1.96-20packageisthecasepositionforSY8827NPKCθJCmeasurement.

Note3:Thedeviceisnotguaranteedtofunctionoutsideitsoperatingconditions.

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SY8827N

masteralwaysgeneratestheSTARTandSTOP

EnablingFunctionconditions.

TheENpincontrolsSY8827Nstartup.ENpinlow

tohightransitionstartsthepowerupsequencer.If

ENpinislow,theDC/DCconverterwillbeturned

off,andallregisterswillberesettodefaultvalues.

SY8827Nallowssoftwaretoenable/disablethe

regulatorwhenENisHIGH,viatheBUCK_ENbits.

BUCK_EN0andBUCK_EN1arebothinitialized

HIGHintheregisters.

DataValidity:

HardwareandSoftwareEnableControlTableThedataontheSDAlinemustbestableduringthe

PinsBitsHIGHperiodoftheSCL,unlessgeneratingaSTART

orSTOPcondition.TheHIGHorLOWstateofthe

ENVSELBUCK_EN0BUCK_EN1OUTPUTdatalinecanonlychangewhentheclocksignalon

0xxxOFFtheSCLlineisLOW.

100xOFF

101xON

11x0OFF

11x1ON

InputOverVoltageProtection

FunctionAcknowledge:

Eachaddressanddatatransmissionuses9-clock

WhentheVINexceedsovervoltageprotectionpulses.Theninthpulseistheacknowledgebit(ACK).

threshold,SY8827NwillstopswitchingtoprotectAftertheSTARTcondition,themastersends7-slave

thecircuitry.Aninternal20usblankingtimefilter——

helpstopreventthecircuitfromshuttingdownduetoaddressbitsandanR/Wbitduringthenext8-clock

noisespikes.pulses.Duringtheninthclockpulse,thedevicethat

recognizesitsownaddressholdsthedatalinelowto

2acknowledge.Theacknowledgebitisalsousedby

ICInterfaceboththemasterandtheslavetoacknowledgereceipt

ofregisteraddressesanddata.

SY8827NfeaturesanI2Cinterfacethatallowthe

HOSTprocessortocontroltheoutputvoltageachieve

theDVSfunction.TheI2Cinterfacesupportsclock

speedsofupto3.4MHzandusesstandardI2C

commands.SY8827Nalwaysoperatesasaslave

device,andisaddressedusinga7-bitslaveaddress

followedbyan8thbit,whichindicateswhetherthe

transactionisaread-operationorawrite-operation.

2

ICaddressoftheSY8827NissetatthefactorytoDataTransactions:

0xC0h.Alltransactionsstartwithacontrolbytesentfromthe

I2Cmasterdevice.Thecontrolbytebeginswitha

STARTandSTOPConditions:STARTcondition,followedby7-bitsofslave

2

SY8827NiscontrolledviaanICcompatibleaddress(1100000xfortheSY8827N,thisaddresscan

interface.TheSTARTconditionisaHIGHtoLOW——

transitionoftheSDAlinewhileSCLisHIGH.Thebechangedifnecessary)followedbythe8thbit,R/W

STOPconditionisaLOWtoHIGHtransitiononthe——

bit.TheR/Wbitis0forawriteor1foraread.If

SDAlinewhileSCLisHIGH.ASTOPcondition2

mustbesentbeforeeachSTARTcondition.TheI2CanyslavedevicesontheICbusrecognizetheir

address,theywillacknowledgebypullingtheSDA

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SY8827N

linelowforthelastclockcycleinthecontrolbyte.If

noslavesexistatthataddressorarenotreadytoWriteToARegister

SSLAVEAREGISTERADATAAP

communicate,thedatalinewillbe1,indicatingaNotADDR+WADDR

Acknowledgecondition.Oncethecontrolbyteissent,

andSY8827Nacknowledgesit,the2ndbytesentbyReadFromARegister

SSLAVEAREGISTERASSLAVEADATANP

themastermustbearegisteraddressbyte.TheADDR+WADDRADDR+R

registeraddressbytetellstheSY8827Nwhich

registerthemasterwillwriteorread.OncetheSSTARTAACKNOWLEDGEDRIVENBYTHEMASTER

SY8827Nreceivesaregisteraddressbyteitresponds

PSTOPNNOACKNOWLEDGEDRIVENBYTHESLAVE

withanacknowledge.

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SY8827N

RegisterSettings:

1.VSEL0(0x00)

RegisterNameVSEL0

Address0x00

FieldBitR/WDefaultDescription

Softwarebuckenable.WhenENpinislow,

BUCK_EN07R/W1theregulatorisoff.WhenENpinishigh,

BUCK_ENbittakesprecedent.

0=Allowauto-PFMmodeduringlightload.

MODE06R/W0

1=ForcedPWMmode

000000=0.60V

000001=0.6125V

010000……

NSEL05:0R/W

(VOUT=0.8V)010000=0.8V

……

111111=1.3875V

2.VSEL1(0x01)

RegisterNameVSEL1

Address0x01

FieldBitR/WDefaultDescription

Softwarebuckenable.WhenENpinislow,

BUCK_EN17R/W1theregulatorisoff.WhenENpinishigh,

BUCK_ENbittakesprecedent.

0=Allowauto-PFMmodeduringlightload.

MODE16R/W0

1=ForcedPWMmode

000000=0.60V

000001=0.6125V

010000……

NSEL15:0R/W

(VOUT=0.8V)010000=0.8V

……

111111=1.3875V

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SY8827N

3.ControlRegister(0x02)

RegisterNameControlRegister

Address0x02

FieldBitR/WDefaultDescription

Output0=dischargeresistorisdisabled.

7R/W1

Discharge1=dischargeresistorisenabled.

Settheslewrateforpositivevoltage

transitions.

000=12.5mV/0.15us

001=12.5mV/0.3us

010=12.5mV/0.6us

SlewRate6:4R/W011=12.5mV/1.2us

011=12.5mV/1.2us

100=12.5mV/2.4us

101=12.5mV/4.8us

110=12.5mV/9.6us

111=12.5mV/19.2us

Reserved3:0R/W0000Alwaysreadsback0.

4.ID1Register(0x03)

RegisterNameID1Register

Address0x03

FieldBitR/WDefaultDescription

VENDOR7:5R100ICvendorcode.

Reserved4R0