GENERALDESCRIPTIONTheTMPA2155DSisastereoclass-DaudiopoweramplifierIC.WithBTL(Bridge-Tied-Load)configuration,itdeliversupto2.7W/ch(5.4Winall)intoa3ohmloador2.3W/ch(4.6Winall)intoa4ohmloador1.5W/ch(3Winall)intoan8ohmload.Noexternalheat-sinkisrequired.Formultiple-inputapplicati***,independentgaincontrolandcornerfrequencycanbeimplementedbysummingtheinputsourcesthroughresistorratioandinputcapacitorvalues.Automaticvoltagegaincontrolmakesthebestuseofbattery.Analoginputsignalisconvertedintodigitaloutputwhichdrivesdirectlytothespeaker.Highpowerefficiencyisachievedduetodigitaloutputattheload.TheaudioinformationisembeddedinPWM（PulseWidthModulation）.APPLICATI***MultimediaapplicationincludesCellularPhones,PDAs,DVD/CDplayers,TFTLCDTVs/Monitors,2.1channel/5.1channelaudiosystems,USBaudio.ItisalsoidealforotherportabledeviceslikeWirelessRadios.FEATURES2.5Vto6VSingleSupplyUpto2.7W/Chat5V,3ohmsUpto85%PowerEfficiencyAutomaticoutputpowercontrol(APC)2.2mA/ChQuiescentCurrentat5VLessThan0.2uA/ChShutdownCurrentPop-lessPower-Up,ShutdownandRecoveryDifferential250KHzPWMAllowsBridge-TiedLoadtoIncreaseOutputPowerandEliminatesLCOutputFilterThermalShutoffandAutomaticRecoveryCompatiblewithearphoneapplicationOutputPinShort-CircuitProtection(ShorttoOtherOutputs,ShorttoVCC,ShorttoGround)DifferentialSignalProcessingImprovesCMRRPackageTSSOP20***ailable,pbfree【RoHS】)