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Partno	Mfg	Dc	Qty	Available	Descript
TLE4251D	INFINEON	N/a	2500	avai	Low Drop Voltage Tracker
TLE4251G		N/a	77	avai	Low Drop Voltage Tracker

TLE4251D ,Low Drop Voltage Trackerapplications.Data Sheet Rev. 2.4 1 2001-05-07TLE 4251P-TO252-5-1 P-TO263-5-1GND1 51 5I EN ADJ QAEP0 ..
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TLE4251D-TLE4251G
Low Drop Voltage Tracker
LowDropVoltageTrackerTLE4251
FeaturesOutputtrackingtolerance≤ ±0.2%400mAoutputcurrentcapabilityEnableFunctionVerylowcurrentconsumptioninOFFmodeWideoperationrange:upto40VWidetemperaturerange:–40°C≤Tj ≤ 150°COutputprotectedagainstshortcircuitOvertemperatureprotectionReversepolarityproof
FunctionalDescription
TheTLE4251isamonolithicintegratedlow-dropvoltagetrackerintheverysmallSMD
packageP-TO252-5-1.Itisdesignedtosupplye.g.sensorsunderthesevereconditionsautomotiveapplications.Thereforethedeviceisequippedwithadditionalprotection
functionsagainstoverload,shortcircuitandreversepolarity.
Supplyvoltagesupto40Varetrackedtoareferencevoltagegiventotheadjustinput
viaanexternalresistor.
Theoutputisabletodriveloadsupto400mAwhileitfollowse.g.the5Voutputofa
mainvoltageregulatorwithinanaccuracyof0.5%.Forloadsupto300mAthetracking
accuracyis0.2%.
TheTLE4251canbeswitchedinstand-bymodeviatheenableENinputwhichcauses
thecurrentconsumptiontodroptoverylowvalues.ThisfeaturemakestheICsuitable
forlowpowerbatteryapplications.
Figure1PinConfiguration(topview)
Figure2BlockDiagram
Note:Maximumratingsareabsoluteratings;exceedinganyoneofthesevaluesmay
AbsoluteMaximumRatings40°C
Input
Output
Adjust
Enable
Temperatures
ThermalResistancesWorstcase,regardingpeaktemperature;zeroairflow;mountedanaPCB80×80×1.5mm3,heatsinkarea
300mm2.
OperatingRangeVI>VADJ+VDR
ElectricalCharacteristicsI=13.5V;2.5V ≤VADJ ≤VI–0.5V;–40°C
Output
RegulatorPerformance
AdjustInput
EnableMeasuredwhentheoutputvoltageVQhasdropped100mVfromthenominalvalue.
ElectricalCharacteristics(cont’d)I=13.5V;2.5V ≤VADJ ≤VI–0.5V;–40°C

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