http://uphotos.eepw.com.cn/soothmusic/pics/5a9c5e81d76414aa6cd8115f176a1ffb.jpg

摘要：以下应用笔记演示了一个简单的使用电荷泵和一个微处理器监控电路断开负载低的电源电压。该电路采用P沟道MOSFET断开负载从一个1.5V电源。

Maxim/Dallas>AppNotes>BATTERYMANAGEMENTPOWER-SUPPLYCIRCUITSKeywords:lowvoltage,batterydisconnect,loaddisconnect,dc-dcconverter,overvoltage,dctodcconverters,Jul21,2003overvoltage,voltagemonitor,microprocessorsupervisorAPPLICATIONNOTE2237SimpleCircuitDisconnectsLoadfromLow-VoltageSupplyThefollowingapplicationnotedemonstratesasimplecircuitusingachargepumpandamicroprocessorsupervisortodisconnectalowvoltagesupplyfromaload.ThecircuitusesaP-channelMOSFETtodisconnecttheloadfroma1.5Vsupply.Powersuppliesoftenincludeacircuitthatdisconnectstheloadwhenthesupplyvoltagedropstoolow(whenabatteryisnearlydischarged,forexample).Ap-channelMOSFETconnectedbetweensupplyandloadisthety