TLE7368-DataSheet-Infineon

AutomotivePowerDataSheetRev.2.1,2010-11-22TLE7368NextGenerationMicroControllerSupplyTLE7368GTLE7368ETLE7368-2ETLE7368-3EDataSheet2Rev.2.1,2010-11-22TLE7368TableofContents1Overview.......................................................................32BlockDiagram...................................................................53PinConfiguration................................................................63.1PinAssignment...................................................................63.2PinDefinitionsandFunctionsTLE7368G...............................................64GeneralProductCharacteristics....................................................94.1AbsoluteMaximumRatings.........................................................94.2FunctionalRange................................................................124.3ThermalResistance..............................................................124.4ElectricalCharacteristics..........................................................135DetailedInternalCircuitsDescription...............................................245.1BuckRegulator..................................................................245.1.1BuckRegulatorControlScheme...................................................245.1.2HighSideDriverSupplyand100%DutyCycleOperation...............................245.1.3ElectromagneticEmissionReduction...............................................255.1.4ChargePump..................................................................265.1.5BuckConverterProtectionCircuits.................................................265.2LinearRegulators................................................................265.3VoltageTrackingRegulators.......................................................265.4PowerUpandPowerDownSequencing..............................................275.5Stand-byRegulator...............................................................295.6OvertemperatureProtection........................................................295.7DeviceEnableFunction...........................................................295.8ResetFunction..................................................................295.9MonitoringCircuit................................................................315.10WatchdogCircuit................................................................336ApplicationInformation..........................................................356.1ChoosingComponentsfortheBuckRegulator.........................................366.2SettingupLDO1,LDO2...........................................................366.3SettingupofLDO3...............................................................366.4SettinguptheStand-byRegulator...................................................376.4.1Stand-byRegulator’sOutputVoltageConfiguration....................................377PackageOutlines...............................................................388RevisionHistory................................................................40TableofContentsTypePackageMarkingRemarkTLE7368GPower-P-DSO-36TLE7368G–TLE7368EPG-DSO-36TLE7368ERoHScompliantTLE7368-2EPG-DSO-36TLE7368-2ERoHScompliantTLE7368-3EPG-DSO-36TLE7368-3ERoHScompliantPower-P-DSO-36PG-DSO-36DataSheet3Rev.2.1,2010-11-22NextGenerationMicroControllerSupplyTLE73681OverviewFeatures•Highefficientnextgenerationmicrocontrollerpowersupplysystem•Widebatteryinputvoltagerange4.5Vupto45V•OperatingtemperaturerangeTj=-40°Cto+150°C•Pre-regulatorforlowalloverpowerloss:IntegratedcurrentmodeBuckconverter5.5V/2.5A•Post-regulators,e.g.forsystemandcontrollerI/Osupply:–LDO1:5V±2%,800mAcurrentlimit–LDO2:3.3V±2%or2.6V±2%(selectableoutput),700mAcurrentlimit•Integratedlinearregulatorcontrolcircuittosupplycontrollercores:–LDO3controlforanexternalNPNpowerstage:–1.5V±2%atTLE7368GandTLE7368E–1.2V±2%atTLE7368-2E–1.3V±2%atTLE7368-3E•Post-regulatorsforoffboardsupply:–2Trackingregulatorsfollowingthemain5V,105mAand50mA•Stand-byregulatorwithlowestcurrentconsumption:–Linearvoltageregulatorasstand-bysupplyfore.g.memorycircuits–Hardwareselectableoutputvoltagesas1.0Vor2.6V,30mA–Independentbatteryinput,separatedfromBuckregulatorinput•Hardwarecontrolledon/offlogic•Undervoltagedetection:–Undervoltageresetcircuitswithadjustableresetdelaytimeatpowerup–Undervoltagemonitoringcircuitonstand-bysupply•Windowwatchdogcircuit•Overcurrentprotectiononallregulators•Powersequencingoncontrollersupplies•Overtemperatureshutdown•Packages:LowRthjaPower-P-DSO-36;smallexposedpadPG-DSO-36•PG-DSO-36only:GreenProduct(RoHScompliant)•AECQualifiedDataSheet4Rev.2.1,2010-11-22TLE7368OverviewDescriptionTheTLE7368deviceisamultifunctionalpowersupplycircuitespeciallydesignedforAutomotivepowertrainsystemsusingastandard12Vbattery.Thedeviceisintendedtosupplyandmonitornextgeneration32-bitmicrocontrollerfamilies(13µmlithography)wherevoltagelevelssuchas5V,3.3Vor1.5/1.2/1.3Varerequired.TheregulatorfollowstheconceptofitspredecessorTLE6368/SONIC,wheretheoutputofapre-regulatorfeedstheinputsofthemicro’s