HT7660 - CMOS Switched-Capacitor Voltage Converter
DescriptionHT7660isamonolithicCMOSswitched-capacitorvolt-ageconverter.HT7660isdesignedtocompleteavolt-ageconversionfrompositivetonegative.Theonlyrequiredexternalcomponentsaretwolowcostelectro-lyticcapacitors.HT7660includesavoltageregulator,anRCoscillatorandfouroutputpowerMOSswitches.ThefrequencyofanRCoscillatorcanbeloweredbyaddinganexternalcapacitorbetweenVDDandtheOSCpin,oranexternalclockcanbeconnectedtotheOSCpintoreplacetheoriginaloscillator.TheLVterminalmaybetiedtoVSStodisablethevoltageregulator.Bydoingthis,lowvoltageoperationcanbeimproved.VoltageRegulatorVoltageLevelShifterRCOscillatorLogicNetworkOSCBOOSTLVVSSVDDCAP+CAPVOUTPinAssignmentPinDescriptionPinNo.PinNameI/OInternalConnectionDescription1BOOSTICMOSPull-lowHigherswitchingfrequencyselectioninput2CAP+OCMOSThispinisconnectedtothepositiveterminalofCapacitorC1forachargepump3VSS Negativepowersupply,ground4CAPONMOSThispinisconnectedtothenegativeterminalofCapacitorC1forachargepump5VOUTONMOSThispinisconnectedtothenegativeterminalofCapa Features SimpleconversionofVDDto DD Cascadeconnection(twodevicesareconnected,VOUT= 2VDD) Boostpinforhigherswitchingfrequency Easytouse Requiresonlytwoexternalcapacitors Noexternaldioderequired Typicallywithnoloadvoltageconversion,99.9%effi-ciency Typicalpowerefficiencyis98% Wideoperatingvoltagerange:3Vto12V 8-pinDIP/SOPpackageApplications OnboardnegativesupplyfordynamicRAMS Supplyvoltagesplitter,VO= VDD/2 Operationamplifiersupply Dataacquisitionsystems PositivevoltagedoublerGeneralDescriptionHT7660isamonolithicCMOSswitched-capacitorvolt-ageconverter.HT7660isdesignedtocompleteavolt-ageconversionfrompositivetonegative.Theonlyrequiredexternalcomponentsaretwolowcostelectro-lyticcapacitors.HT7660includesavoltageregulator,anRCoscillatorandfouroutputpowerMOSswitches.ThefrequencyofanRCoscillatorcanbeloweredbyaddinganexternalcapacitorbetweenVDDandtheOSCpin,oranexternalclockcanbeconnectedtotheOSCpintoreplacetheoriginaloscillator.TheLVterminalmaybetiedtoVSStodisablethevoltageregulator.Bydoingthis specificationisnotimpliedandprolongedexposuret
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20C188, H295, 375B240, 157C12, 7660v111, 260C125, 145E16, 5VIOUT20mA, 244B150, VDD/2, 135D125, 5V9698, 20F50, HT7660, 10G16, 50H7
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| 50H7 Schematico | 50H7 Mechanical Outline | 50H7 Reference Design | 50H7 Technical Specs |
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| VDD/2 Pin-out | VDD/2 Features | VDD/2 Operating Parameter | VDD/2 данные |
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