标签: pumps

2pumpsonefloat90-30LM90

Abstract:ChargepumpsareaformofDC-DCconverterthatrelyoncapacitorsinsteadofinductorsforenergystorageandtransfer.Theabsenceofinductorsmakesthemattractiveinsituationsrequiringalow-powerauxiliarysupply(outputcurrentsuptoabout150mA).Theyuselesscircuit-boardarea,offerminimalcomponentheight,andareeasytouseMaxim>AppNotes>A/DandD/ACONVERSION/SAMPLINGCIRCUITSKeywords:SimpleMethodsReduceInputRippleforAllChargePumpsMay13,2003APPLICATIONNOTE2027SimpleMethodsReduceInputRippleforAllChargePumpsAbstract:ChargepumpsareaformofDC-DCconverterthatrelyoncapacitorsinsteadofinductorsforenergystorageandtransfer.Theabsenceofinductorsmakesthemattractiveinsituationsrequiringalow-powerauxiliarysupply(outputcurrentsuptoabout150mA).Theyuselesscircuit-boardarea,offerminimalcomponentheight,andareeasytouse.Chargepumpscanhaveregulatedorunregulatedoutputs.Anunregulatedchargepumpeitherdoublesorinvertsthevoltagethatpowersitandtheoutputvoltageisafunctionofthesupplyvol……

考和超低静态电流比较低电阻模拟开关生产7uA的静态电流（IQ）的分立元件的稳压电荷泵提供10毫安。Maxim>AppNotes>AmplifierandcomparatorcircuitsPower-supplycircuitsKeywords:chargepumps,regulatedchargepumps,quiescentcurrent,portabledevices,comparatorsSep24,2004APPLICATIONNOTE3330BuildaChargePumpwithUltra-LowQuiescentCurrent(Iq)Abstract:Combininglow-on-resistanceanalogswitcheswithareferenceandultra-lowquiescentcurrentcomparatorproducesadiscrete-componentregulatedchargepumpthatdelivers10mA,withonly7uAofquiescentcurrent(Iq).Portable,battery-powereddevicesoftenspendmostoftheirlifeinstandbymode,wherethequiescentcurrentofaninternalboostconverterbleedsthebatterycontinuously.Thequiescentcurrentduringstandbycanbelargerthantheactualloadcurrent.Thoughseveralinductor-ba……

摘要：电荷泵往往供电低功耗和低成本的应用程序需要的最佳选择。本应用笔记讨论了集成的电荷泵，并解释如何计算功耗电荷泵。Maxim>DesignSupport>AppNotes>Automotive>APP725Maxim>DesignSupport>AppNotes>Power-SupplyCircuits>APP725Keywords:powersupply,voltageconverter,dc-dcconverters,chargepumps,switchedcapacitorregulator,regulatedchargepump,unregulatedchargepump,voltagedivider,voltagedoubler,regulatedinverter,buck-boost,regulator,chargepumppowerdissipationJul22,2009APPLICATIONNOTE725DC-DCConversionWithoutInductorsAbstract:Chargepumpsareoftenthebestchoiceforpoweringanapplicationthatrequiresbothlowpowerandlowcost.Thisapplicationnotediscussesintegratedchargepumpsandexplainshowtocalculatepowerdissip……

摘要：大多是在其倍增器和逆变器配置的电荷泵电压转换器。本文重点介绍的电压分配器电荷泵配置，分为两个输入电压的精确。Maxim>Designsupport>Appnotes>BatteryManagement>APP718Maxim>Designsupport>Appnotes>Power-SupplyCircuits>APP718Keywords:chargepump,voltageconverter,doubler,inverter,voltagesplitter,DC-DC,multiplier,chargepumpsMar04,2009APPLICATIONNOTE718PropertiesoftheCharge-PumpVoltageSplitterAbstract:Thecharge-pumpvoltageconverterisknownmostlyinitsdoublerandinverterconfiguration.Thisarticlefocusesonthevoltage-splittercharge-pumpconfiguration,whichdividestheinputvoltagepreciselybytwo.Thoughcommoninmanyoftoday'sDC-DCenergyconverters,thecharge-pumpvoltageconverterisknownmostlyinitsdouble……

摘要：MAX1759升降压电荷泵调节恒流功率白光LED，巧妙地利用了反馈网络。1X/2X模式电荷泵提供高效率，尤其是在两节镍氢和/或碱性的应用。Maxim>AppNotes>DisplayDriversPower-SupplyCircuitsKeywords:LEDs,whiteLEDs,chargepumps,charge-pump,currentregulators,buck,boost,stepup/down,Mar27,2002step-up/down,buck/boost,backlight,twocell,AA,alkaline,NiMHAPPLICATIONNOTE1021Buck/BoostCharge-PumpRegulatorPowersWhiteLEDsfromaWide1.6Vto5.5VInputAbstract:TheMAX1759step-up/step-downcharge-pumpregulatorisusedtopowerwhiteLEDswithconstantcurrentbycleveruseofafeedbacknetwork.The1x/2xmodesofthechargepumpprovideshighefficiency,especiallyintwo-cellNiMHand/orAlkalineapplications.Sincetheirinventionafewyearsago,whitelight-emitting-diodes(LEDs)havebeensteadilygaininginpopularity.Becausetheyofferwhiterlightandlongerlifethanincandescent……

Aprecisionrampgeneratorproducesa0to5Vrampwhileoperatingfromasingle5Vsupply……