摘要:设计一个简单的电路断开笔记显示了如何从低电压电源的负载。该电路采用反相电荷泵产生负电压〜等于输入电源和微处理器监控监测的电压差。Maxim>AppNotes>AmplifierandComparatorCircuitsKeywords:chargepump,invertingchargepump,microprocessorsupervisor,uP,low-voltagecircuitJun27,2003APPLICATIONNOTE2080SimpleCircuitDisconnectsLoadfromLow-VoltageSupplyAbstract:Designnoteshowshowasimplecircuitdisconnectstheloadfromalow-voltagesupply.Thecircuitusesaninvertingchargepumptogenerateanegativevoltage~equaltotheinputsupplyandamicroprocessorsupervisortomonitorthevoltagedifference.Schematicisshown.AsimilarversionofthisarticleappearedintheApril14,2003issueofEDNmagazine.Powersuppliesoftenincludeacircuitthatdisconnectstheloadwhenthesupplyvoltagedropstoolow(whenabatteryisnearly
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