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LTC3541-1 35411fa The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 3.6V unless otherwise specified (Note 2) ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VBUCKFB ReferenceRegulationVoltage (Note6) ENBUCK=VIN,ENVLDO=0V,TA=25°C 0.784 0.8 0.816 V ENBUCK=VIN,ENVLDO=0V,0°C≤TA≤85°C 0.782 0.8 0.818 V ENBUCK=VIN,ENVLDO=0V,–40°C≤TA≤85°C ● 0.78 0.8 0.82 V VLFB ReferenceRegulationVoltage (Note7) ENBUCK=0V,ENVLDO=VIN,TA=25°C 0.392 0.4 0.408 V ENBUCK=0V,ENVLDO=VIN,0°C≤TA≤85°C 0.391 0.4 0.409 V ENBUCK=0V,ENVLDO=VIN,–40°C≤TA≤85°C ● 0.390 0.4 0.410 V IS Buck+VLDO BurstModeSleep VINQuiescentCurrent LVIN=1.5V,LVOUT=1.2V,ENBUCK=VIN, ENVLDO=VIN,MODE=0V,IOUT(VLDO)=10µA, VBUCKFB=0.9V 85 µA Buck+VLDO BurstModeActive VINQuiescentCurrent LVIN=1.5V,LVOUT=1.2V,ENBUCK=VIN, ENVLDO=VIN,MODE=0V,IOUT(VLDO)=10µA, VBUCKFB=0.7V 315 µA Buck+VLDO Pulse-SkipModeActive VINQuiescentCurrent LVIN=1.5V,LVOUT=1.2V,ENBUCK=VIN, ENVLDO=VIN,MODE=VIN,IOUT(VLDO)=10µA, VBUCKFB=0.7V 300 µA Buck BurstModeSleep VINQuiescentCurrent VBUCKFB=0.9V,IOUT(BUCK)=0A,ENBUCK=VIN, ENVLDO=0V,MODE=0V 55 µA Buck BurstModeActive VINQuiscentCurrent VBUCKFB=0.7V,IOUT(BUCK)=0A,ENBUCK=VIN, ENVLDO=0V,MODE=0V 300 µA Buck Pulse-SkipModeActive VINQuiescentCurrent VBUCKFB=0.7V,IOUT(BUCK)=0A,ENBUCK=VIN, ENVLDO=0V,MODE=VIN 285 µA LinearRegulatorVINQuiescent Current LVOUT=1.2V,ENBUCK=0V,ENVLDO=VIN, IOUT(LREG)=10µA 50 µA VINShutdownQuiescentCurrent ENBUCK=0V,ENVLDO=0V 2.5 µA LVINShutdownQuiescentCurrent LVIN=3.6V,ENBUCK=0V,ENVLDO=0V 0.1 µA fOSC OscillatorFrequency ● 1.8 2.25 2.7 MHz RPFET RDS(ON)ofP-ChannelMOSFET ISW=100mA 0.25 Ω RNFET RDS(ON)ofN-ChannelMOSFET ISW=100mA 0.35 Ω ILSW SWLeakage Enable=0V,VSW=0Vor6V,VIN=6V ±0.01 ±1 µA VIH InputPinHighThreshold MODE,ENBUCK,ENVLDO ● 0.9 V VIL InputPinLowThreshold MODE,ENBUCK,ENVLDO ● 0.3 V IMODE, IENBUCK, IENVLDO InputPinCurrent ● ±0.01 ±1 µA Note 1:StressesbeyondthoselistedunderAbsoluteMaximumRatings maycausepermanentdamagetothedevice.ExposuretoanyAbsolute MaximumRatingconditionforextendedperiodsmayaffectdevice reliabilityandlifetime. Note 2:TheLTC3541-1isguaranteedtomeetperformancespecifications from0°Cto85°C.VLDO/linearregulatoroutputistestedandspecified underpulseloadconditionssuchthatTJ≈TA,andare100%production testedat25°C.Specificationsoverthe–40°Cto85°Coperating temperaturerangeareassuredbydesign,characterizationandcorrelation withstatisticalprocesscontrols. Note 3:MinimumoperatingLVINvoltagerequiredforVLDOregulator regulationis: LVIN≥LVOUT+VDROPOUTandLVIN≥0.9V Note 4:MinimumoperatingVINvoltagerequiredforVLDOregulatorand linearregulatorregulationis: VIN≥LVOUT+1.4VandVIN≥2.7V Note 5:TJiscalculatedfromtheambienttemperature,TA,andpower dissipation,PD,accordingtothefollowingformula: TJ=TA+(PD•43°C/W) Note 6:TheLTC3541-1istestedinaproprietarytestmodethatconnects VBUCKFBtotheoutputoftheerroramplifier.Forthereferenceregulation andlineregulationtests,theoutputoftheerroramplifierissettothe midpoint.Fortheloadregulationtest,theoutputoftheerroramplifieris driventominimumandmaximumofthesignalrange. |
