Texas Instruments LP8727 Handleiding

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LP8727

www.ti.com

SNVS898A–OCTOBER2012–REVISEDMAY2013

Micro/MiniUSBInterfacewithIntegrated28VCharger

CheckforSamples:LP8727

1

FEATURES

APPLICATIONS

2

•USBMultiplexingSwitches

•GSM,GPRS,EDGE,CDMA&WCDMA

handsets

–High-SpeedUSBonUSBandUARTInputs

•PortableMediaPlayers/MP3Players

–NegativeVoltageRailonAudioInputs

–InternalLDOforIDDetectionandMICBias

DESCRIPTION

–CompatiblewithUSBCharging

TheLP8727isdesignedtoprovideautomatic

SpecificationRev.1.1

multiplexingswitchesbetweenMicro/MiniUSB

–DSSInputforDefaultSwitchConnection

connectorandUSB,UARTandAudiopathsin

cellularphoneapplications.Italsocontainsasingle-

–Low-PowerMICStandbyMode

inputLi-Ionbatterychargerandanovervoltage-

•LinearChargewithSingleInput

protectedLDO.ProgrammingishandledviaanI

2

C-

–28OVPonVBUSInput

compatibleSerialInterfaceallowingcontrolof

charger,multiplexingswitches,andreadingstatus

–High-CurrentModeforProductionTest

informationofthedevice.

–ThermalRegulation

ThemultiplexingswitchesonUSBandUARTsupport

•Over-VoltageProtectedLDOforUSB

high-speedUSB,andAudioinputscanbedrivento

TransceiversandPMUWakeup

negativevoltagerail.TheLP8727iscompatiblewith

•UVLO(UndervoltageLockOut)

USBchargingspecificationsrev1.1fromUSBIF.

•InterruptRequesttoReduceSWPolling

TheLi-Ionchargerrequiresfewexternalcomponents

–USB/IDDetection

andintegratesthepowerFET.Chargingisthermally

–SEND/ENDButtonDetection

regulatedtoobtainthemostefficientchargingratefor

agivenambienttemperature.IthasOvervoltage

–MicRemoval

Protection(OVP)circuitatthechargerinputprotects

–OVLO/UVLOonVBUS

thePMUfrominputvoltagesupto+28V,eliminating

–ChargerStatus

theneedforanyexternalprotectioncircuitry.

•ThermalShutdownProtection

Anovervoltage-protectedLDOwhichcansupplyup

•I

2

C-compatibleSerialInterface

to50mAisdesignedforpoweringupalow-voltage

USBtransceiverorwakingupaPMU(Power

•25-Bump0.4mmPitchThinDSBGAPackage

ManagementUnit)whenanexternalpowersource

(eitherUSBVBUSorwalladapter)isconnectedto

theUSBconnector.

TheLP8727PMUisavailablein25-bump0.4mm

pitchthinDSBGApackage(2.015mmx2.015mm).

1

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof

TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

2Alltrademarksarethepropertyoftheirrespectiveowners.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2012–2013,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Product specificaties