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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LT3757 датащи(PDF) 4 Page - Linear Technology |
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LT3757 датащи(HTML) 4 Page - Linear Technology |
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4 / 36 page  LT3757 3757fb TEMPERATURE (°C) –75 –50 1580 1585 1590 1605 1600 0 50 75 1595 –25 25 100 150 125 3757 G01 VIN = 40V VIN = 24V VIN = 8V VIN = INTVCC = 2.9V SHDN/UVLO = 1.33V TEMPERATURE (°C) –802 –800 –798 –788 –790 –792 –794 –804 –796 3757 G02 –75 –50 0 50 75 –25 25 100 150 125 VIN = 40V VIN = 24V VIN = 8V VIN = INTVCC = 2.9V SHDN/UVLO = 1.33V Typical perForMance characTerisTics Positive Feedback Voltage vs Temperature, VIN Negative Feedback Voltage vs Temperature, VIN Quiescent Current vs Temperature, VIN TA = 25°C, unless otherwise noted. elecTrical characTerisTics The l denotes the specifications which apply over the full operating temp- erature range, otherwise specifications are at TA = 25°C. VIN = 24V, SHDN/UVLO = 24V, SENSE = 0V, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS INTVCCCurrentinShutdown SHDN/UVLO=0V,INTVCC=8V 16 µA INTVCCVoltagetoBypassInternalLDO 7.5 V Logic Inputs SHDN/UVLOThresholdVoltageFalling VIN=INTVCC=8V l 1.17 1.22 1.27 V SHDN/UVLOInputLowVoltage I(VIN)DropsBelow1µA 0.4 V SHDN/UVLOPinBiasCurrentLow SHDN/UVLO=1.15V 1.7 2 2.5 µA SHDN/UVLOPinBiasCurrentHigh SHDN/UVLO=1.30V 10 100 nA Gate Driver trGateDriverOutputRiseTime CL=3300pF(Note5),INTVCC=7.5V 22 ns tfGateDriverOutputFallTime CL=3300pF(Note5),INTVCC=7.5V 20 ns GateVOL 0.05 V GateVOH INTVCC –0.05 V Note 1:StressesbeyondthoselistedunderAbsoluteMaximumRatings maycausepermanentdamagetothedevice.ExposuretoanyAbsolute MaximumRatingconditionforextendedperiodsmayaffectdevice reliabilityandlifetime. Note 2: TheLT3757Eisguaranteedtomeetperformancespecifications fromthe0°Cto125°Cjunctiontemperature.Specificationsoverthe–40°C to125°Coperatingjunctiontemperaturerangeareassuredbydesign, characterizationandcorrelationwithstatisticalprocesscontrols.The LT3757Iisguaranteedoverthefull–40°Cto125°Coperatingjunction temperaturerange.TheLT3757Hisguaranteedoverthefull–40°Cto150°C operatingjunctiontemperaturerange.Highjunctiontemperaturesdegrade operatinglifetimes.Operatinglifetimeisderatedatjunctiontemperatures greaterthan125°C.TheLT3757MPis100%testedandguaranteedoverthe full–55°Cto125°Coperatingjunctiontemperaturerange. Note 3:TheLT3757istestedinafeedbackloopwhichservosVFBXtothe referencevoltages(1.6Vand–0.8V)withtheVCpinforcedto1.3V. Note 4:FBXovervoltagelockoutismeasuredatVFBX(OVERVOLTAGE)relative toregulatedVFBX(REG). Note 5:Riseandfalltimesaremeasuredat10%and90%levels. Note 6:ForVINbelow6V,theSHDN/UVLOpinmustnotexceedVIN. Note 7:SHDN/UVLO=1.33VwhenVIN=2.9V. Note 8:TheLT3757includesovertemperatureprotectionthatisintended toprotectthedeviceduringmomentaryoverloadconditions.Junction temperaturewillexceedthemaximumoperatingjunctiontemperature whenovertemperatureprotectionisactive.Continuousoperationabove thespecifiedmaximumoperatingjunctiontemperaturemayimpairdevice reliability. –75 –50 0 50 75 –25 25 100 150 125 TEMPERATURE (°C) 1.4 1.6 1.8 1.5 1.7 3757 G03 VIN = 40V VIN = 24V VIN = INTVCC = 2.9V |
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