矽力杰 Silergy SY8810 2.7-5.5V 输入 12A 持续 15A 峰值输出高效同步降压稳压器 规格书 (Datasheet)佰祥电子

SY8810

2

12A,1.5MHz,ICProgrammable,withVOUTRemoteSense

SynchronousStepDownRegulator

GeneralDescriptionFeatures

SY8810isahighefficiency1.5MHzsynchronousstep2.7Vto5.5VInputVoltageRange

downDC/DCregulatorcapableofdeliveringupto12APseudo-constantFrequency:1.5MHz

outputcurrents.ItcanoperateoverawideinputvoltageLowRDS(ON)forInternalSwitches(Top/Bottom):

rangefrom2.7Vto5.5Vandintegratesmainswitchand12mΩ/6mΩ

synchronousswitchwithverylowRDS(ON)tominimizeProgrammableOutputVoltage:0.6Vto1.5Vin

theconductionloss.Theoutputvoltagecanbe10mVSteps

2

programmedfrom0.6Vto1.5VthroughICinterface.12AContinuous,15APeakLoadCurrent

SY8810isinaspacesaving,lowprofileQFN3x3-12Capability

package.Capablefor0.25µHInductorand2×22µFCeramic

Capacitor

OrderingInformationPFM/PWMOperationforOptimumIncreased

Efficiency

SY8810□(□□)□RemoteSensingatPointofLoadSide

2

TemperatureCode2DifferentICAddressSelectable

2

PackageCodeICInterfaceSupport100kHzStandardModeand

OptionalSpecCode400kHzFastMode

ThermalShutdownwithAutoRecovery

OrderingNumberPackageTypeNote

CompactPackage:QFN3×3-12

SY8810QQCQFN3×3-12--

Applications

Smart-phone

Web-tablets

TypicalApplications

EfficiencyvsLoadCurrent

95

93

SY881091

VIN:2.7V~5.5VL:0.25µHVOUT:0.6V~1.5V

VINLX

)89

Load

CINCOUT%

Side(

2x22µF2x22µF87

y

c

ENn85

e

VOSPi

SEL

c

i

f83

SCLVOSNf

E

SDA81

PGND

79VIN=3.3V,VOUT=1.05V

VIN=4.2V,VOUT=1.05V

77

VIN=5.0V,VOUT=1.05V

75

0.010.1110

LoadCurrent(A)

Figure1.SchematicDiagramFigure2.Efficiencyvs.OutputCurrent

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SY8810

Pinout(topview)

ENSELSCLSDAVOSPVOSN

121110987

VIN16VIN

LX25LX

PGND34PGND

(QFN3×3-12)

TopMark:BOQxyz(devicecode:BOQ,x=yearcode,y=weekcode,z=lotnumbercode)

PinNamePinNumberPinDescription

VIN1,6Inputpins.DecouplethesepinstoGNDwithatleastonepiece22µFMLCC.

LX2,5Inductorpins.Connectthesepinstotheswitchingnodeoftheinductor.

PGND3,4Powergroundpins.

VOSN7Negativeremotesensepin.ConnecttoGNDoftheloadside.

VOSP8Positiveremotesensepin.ConnecttoVOUToftheloadside.

SDA9I2CinterfaceBi-directionaldataline.

SCL10I2Cinterfaceclockline.

I2Caddressselectpin.Donotleaveitfloating.

SEL11SELpinisconnectedtoVIN,slaveaddressis1110000x;

SELpinisconnectedtoGND,slaveaddressis1100000x.

EN12Enablecontrolpin.Pullhightoturnon.Donotleaveitfloating.

AbsoluteMaximumRatings(Note1)

SupplyInputVoltage---------------------------------------------------------------------------------------------------------6.0V

EN,SEL,SCL,SDA,VOSP,VOSNVoltage---------------------------------------------------------------------VIN+0.6V

LXVoltage---------------------------------------------------------------------------------------------------0.3V（*1）to6V（*2）

PowerDissipation,PD@TA=25°C,QFN3×3-12------------------------------------------------------------------------3.0W

PackageThermalResistance(Note2)

θJA--------------------------------------------------------------------------------------------------------------33.3°C/W

JC-------------------------------------------------------------------------------------------------------------5.7°C/W

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

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

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

(*1)LXvoltagetesteddownto-3V<40ns

(*2)LXvoltagetestedupto+7V<40ns

RecommendedOperatingConditions(Note3)

SupplyInputVoltage---------------------------------------------------------------------------------------------2.7Vto5.5V

OutputVoltage--------------------------------------------------------------------------------------------------------0.6Vto1.5V

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

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

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SY8810

ElectricalCharacteristics

(VIN=5V,VOUT=1.05V,L=0.25µH,COUT=2×22µF,TA=25°C,unlessotherwisespecified)

ParameterSymbolTestConditionsMinTypMaxUnit

InputVoltageRangeV2.75.5V

IN

InputUVLOThresholdV2.552.7V

UVLO

InputUVLOHysteresisV0.15V

HYS

QuiescentCurrentIV=V×105%95µA

QFBREF

ISHDN_H/WVEN=0V0.5

ShutdownCurrentµA

IV=V,Buck_ENbit=040

SHDN_S/WENIN

OutputVoltageSet-PointVForcedPWM,DefaultValue-11%

SET

VOSNCompensationRangeV120mV

VOSN

OutputDischargeResistanceR120Ω

DIS

TopFETRR12mΩ

ONDS(ON)1

BottomFETRR6mΩ

ONDS(ON)2

ENInputVoltageHighV1.1V

EN,H

ENInputVoltageLowV0.4V

EN,L

SDA,SCLLogicHighVoltageV1.5V

IH,I2C

SDA,SCLLogicLowVoltageV0.4V

IL,I2C

MinONTimet40ns

ON,MIN

Soft-startTimet0.3ms

SS

SwitchingFrequencyFV=1.05V,CCM1.5MHz

SWOUT

TopFETCurrentLimitI15A

LMT,TOP

BottomFETCurrentLimitI12A

LMT,BOT

OutputUnderVoltage

V40%V

ProtectionThresholdUVP,OUTREF

OutputUVPDelayt15µs

UVP,OUT

UVPHiccupOnTimet0.7ms

UVP,ON

UVPHiccupOffTimet0.7ms

UVP,OFF

Risingthreshold6.2V

InputOverVoltageThresholdVOVP,IN

Fallingthreshold5.655.85V

InputOVPDelayt10µs

OVP,IN

ThermalShutdownTemperatureT150˚C

SD

ThermalShutdownHysteresisT15˚C

HYS

Note1:Stressesbeyondthe“AbsoluteMaximumRatings”maycausepermanentdamagetothedevice.Theseare

stressratingsonly.Functionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedinthe

operationalsectionsofthespecificationisnotimplied.Exposuretoabsolutemaximumratingconditionsfor

extendedperiodsmayaffectdevicereliability.

Note2:θJAofSY8810QQCismeasuredinthenaturalconvectionatTA=25°Cona2OZfour-layerSilergy

evaluationboard.PaddleofQFN3×3-12packageisthecasepositionforSY8810QQCθJCmeasurement.

Note3:Thedeviceisnotguaranteedtofunctionoutsideitsoperatingconditions.

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SY8810

I2CInterfaceAcknowledge:

Eachaddressanddatatransmissionuses9-clock

SY8810featuresanI2Cinterfacethatallowthe

pulses.Theninthpulseistheacknowledgebit(ACK).

HOSTprocessortocontroltheoutputvoltageachieve

2AftertheSTARTcondition,themastersends7-slave

theDVSfunction.TheICinterfacesupportsclock——

speedsofupto400kHzandusesstandardI2CaddressbitsandanR/Wbitduringthenext8-clock

commands.SY8810alwaysoperatesasaslavedevice,pulses.Duringtheninthclockpulse,thedevicethat

andisaddressedusinga7-bitslaveaddressfollowedrecognizesitsownaddressholdsthedatalinelowto

byan8thbit,whichindicateswhetherthetransactionacknowledge.Theacknowledgebitisalsousedby

isaread-operationorawrite-operation.boththemasterandtheslavetoacknowledgereceipt

ofregisteraddressesanddata.

I2CSlaveAddressSelectionFunction:

TheSELpincontrolsSY8810'sslaveaddress.When

SELpinisconnectedtoVIN,theslaveaddressis

1110000x,andifitisconnectedtoGND,theslave

addressis1100000x.

StartandStopConditions:

SY8810iscontrolledviaanI2Ccompatibleinterface.

TheSTARTconditionisaHIGHtoLOWtransitionDataTransactions:

oftheSDAlinewhileSCLisHIGH.TheSTOP

Alltransactionsstartwithacontrolbytesentfromthe

conditionisaLOWtoHIGHtransitionontheSDA2

linewhileSCLisHIGH.ASTOPconditionmustbeICmasterdevice.Thecontrolbytebeginswitha

sentbeforeeachSTARTcondition.TheI2CmasterSTARTcondition,followedby7-bitsofslaveaddress

alwaysgeneratestheSTARTandSTOPconditions.(WhenSELpinisconnectedtoVIN,it's1110000x,

whenSELpinisconnectedtoGND,it's1100000x)

——

fortheSY8810,followedbythe8thbit,R/Wbit.The

——

R/Wbitis0forawriteor1foraread.Ifanyslave

devicesontheI2Cbusrecognizetheiraddress,they

willacknowledgebypullingtheSDAlinelowforthe

lastclockcycleinthecontrolbyte.Ifnoslavesexist

atthataddressorarenotreadytocommunicate,the

datalinewillbe1,indicatingaNotAcknowledge

condition.Oncethecontrolbyteissent,andSY8810

acknowledgesit,the2ndbytesentbythemastermust

DataValidity:

bearegisteraddressbyte.Theregisteraddressbyte

ThedataontheSDAlinemustbestableduringthetellstheSY8810whichregisterthemasterwillwrite

HIGHperiodoftheSCL,unlessgeneratingaSTARTorread.OncetheSY8810receivesaregisteraddress

orSTOPcondition.TheHIGHorLOWstateofthebyteitrespondswithanacknowledge.

datalinecanonlychangewhentheclocksignalonWriteToARegister

theSCLlineisLOW.SSLAVEAREGISTERADATAAP

ADDR+WADDR

ReadFromARegister

SSLAVEAREGISTERASSLAVEADATANP

ADDR+WADDRADDR+R

SSTARTAACKNOWLEDGEDRIVENBYTHEMASTER

PSTOPNNOACKNOWLEDGEDRIVENBYTHESLAVE

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SY8810

RegisterSettings:

1.VSEL0(0x00)

RegisterNameVSEL0

Address0x00

FieldBitR/WDefaultDescription

Reserved7R/W0Alwaysreadsback0.

NSEL6:0R/W0101101Setoutputvoltagefrom0.60Vto1.50Vastable1.

(VOUT=1.05V)Defaultvalueis1.05V.

Table1:OutputVoltageSelectingChart

NSEL[6:0]VOUT(V)NSEL[6:0]VOUT(V)NSEL[6:0]VOUT(V)NSEL[6:0]VOUT(V)

00000000.6001000000.9210000001.2411000001.50

00000010.6101000010.9310000011.2511000011.50

00000100.6201000100.9410000101.2611000101.50

00000110.6301000110.9510000111.2711000111.50

00001000.6401001000.9610001001.2811001001.50

00001010.6501001010.9710001011.2911001011.50

00001100.6601001100.9810001101.3011001101.50

00001110.6701001110.9910001111.3111001111.50

00010000.6801010001.0010010001.3211010001.50

00010010.6901010011.0110010011.3311010011.50

00010100.7001010101.0210010101.3411010101.50

00010110.7101010111.0310010111.3511010111.50

00011000.7201011001.0410011001.3611011001.50

00011010.7301011011.0510011011.3711011011.50

00011100.7401011101.0610011101.3811011101.50

00011110.7501011111.0710011111.3911011111.50

00100000.7601100001.0810100001.4011100001.50

00100010.7701100011.0910100011.4111100011.50

00100100.7801100101.1010100101.4211100101.50

00100110.7901100111.1110100111.4311100111.50

00101000.8001101001.1210101001.4411101001.50

00101010.8101101011.1310101011.4511101011.50

00101100.8201101101.1410101101.4611101101.50

00101110.8301101111.1510101111.4711101111.50

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SY8810

00110000.8401110001.1610110001.4811110001.50

00110010.8501110011.1710110011.4911110011.50

00110100.8601110101.1810110101.5011110101.50

00110110.8701110111.1910110111.5011110111.50

00111000.8801111001.2010111001.5011111001.50

00111010.8901111011.2110111011.5011111011.50

00111100.9001111101.2210111101.5011111101.50

00111110.9101111111.2310111111.5011111111.50

2.ControlRegister(0x01)

RegisterNameControlRegister

Address0x01

FieldBitR/WDefaultDescription

Softwarebuckenable.WhenENpinislow,the

BUCK_EN7R/W1regulatorisoff.WhenENpinishigh,BUCK_EN

bittakesprecedent.

MODE06R/W00=Allowauto-PFMmodeduringlightload.

1=ForcedPWMmode

Output0=dischargeresistorisdisabled.

5R/W0

Discharge1=dischargeresistorisenabled.

SlewRate4:2R/W000=10mV/0.15µsSettheslewrateforpositivevoltagetransitions.

000=10mV/0.15µs

001=10mV/0.3µs

010=10mV/0.6µs

011=10mV/1.2µs

100=10mV/2.4µs

101=10m