ICOM-ICL7665维修手册

190001:Rev2:897MAXAMicroprocessor Voltage Monitor withDual Over/Undervoltage DetectionGeneral DescriptionFeaturesThe ICL7665 warns microprocessors (uPs)of overvolt-uP Over/Undervoltage Warningage and undervoltage conditions.It draws a typicalImproved Second Sourceoperating current of only 3uA.The trip points and hys-Dual Comparator with Precision Internal Referenceteresis of the two voltage detectors are individually pro-grammed via external resistors to any voltage greater◆3μA Operating Currentthan 1.3V.The ICL7665 will operate from any supply+2%Threshold Accuracy (ICL7665A)8voltage in the 1.6V to 16V range,while monitoring volt-+1.6V to 16V Supply Voltage Rangeages from 1.3V to several hundred volts.The MaximICL7665A is an improved version with a 2%-accurate+On-Board Hysteresis OutputsVsET1 threshold and guaranteed performance over+Externally Programmable Trip Pointstemperature.Monolithic,Low-Power CMOS DesignThe 3JA quiescent current of the ICL7665 makes itideal for voltage monitoring in battery-powered sys-tems.In both battery-and line-powered systems,theOrdering Informationunique combination of a reference,two comparators,and hysteresis outputs reduces the size and compo-PARTTEMP.RANGEPIN-PACKAGEnent count of many circuits.ICL7665CPA0°Ct0+70°C8 Plastic DIPICL7665ACPA0°Cto+70°C8 Plastic DIPApplicationsICL7665BCPA0°Ct0+70°C8 Plastic DIPμPVoltage MonitoringICL7665CSA0°Ct0+70°C8S0Low-Battery DetectionICL7665ACSA0°Cto+70°C8s0Power-Fail and Brownout DetectionICL7665BCSA0°Ct0+70°C8S0ICL7665CJA0°Ct0+70°C8 CERDIPBattery Backup SwitchingICL7665ACJA0°Ct0+70°C8 CERDIPPower-Supply Fault MonitoringICL7665BCJA0°Ct0+70°C8 CERDIPOver/Undervoltage ProtectionOrdering Infommation continued on last page.High/Low Temperature,Pressure,Voltage AlarmsPin ConfigurationsTOP VIEW●OUT1 18v+Typical Operating CircuitHYST12MM7 OUT2SET1 31CL7665V+6SET228GND 45HYST2OVERVOLTAGEUNDERVOLTAGEDETECTION1V+OUT1DETECTIONOUT2NMIDIP/SOMAXMv(CAS)1CL7665OUT1/OUT23SET2HYST1 (2)MD☒MGND6)ST2CL7665sETn(3】⑤HYsT2GNDSIMPLE THRESHOLD DETECTORT0-99MAXIMMaxim Integrated Products 1For free samples the latest literature:http://www.maxim-ic.com,or phone 1-800-998-8800.For small orders,phone 408-737-7600 ext.3468.