Transcription of SLVS984B –SEPTEMBER 2009–REVISED MARCH 2015 …
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SLVS984B –SEPTEMBER 2009–REVISED MARCH 2015 …
PowerSupplyVINVOUTCLONOCGNDONOFFRLOADCLO ADVDDCINP roductFolderSample &BuyTechnicalDocumentsTools &SoftwareSupport &CommunityTPS22946 SLVS984B SEPTEMBER2009 REVISEDMARCH2015 TPS22946 UltralowPower,Low Input Voltage,Current-LimitedLoad SwitchWith Shutoff,Auto-Restart,and OvercurrentConditionTime-OutWhenthe switchcurrentreachesthe maximumlimit,1 Featuresthe TPS22946operatesin a constant-currentmodeto1 UltralowQuiescentCurrent1 A (Typical) VIN= VThe currentlimit can be selectedusingthe CL input: to Va high CL inputsets the currentlimit to 155 mA, a lowCL inputsetsthe currentlimitto 70 mA,anda Low ON-ResistancefloatingCL inputsets the currentlimit to 30 mA. rON= 300 m at VIN= VIf the constantcurrentconditionpersistsafter10 ms, rON= 400 m at VIN= Vthe switchis turnedoff and the fault signalpin (OC)is rON= 500 m at VIN= Vpulledlow. The TPS22946has an auto-restartfeature rON= 600 m at VIN= Vwhichturnsthe switchon againafter70 ms if the ONpin is still the TPS22946remainsin an over- SelectableMinimumCurrentLimit:currentcon ditionfor 5 seconds,the deviceshutsoff155 mA, 70 mA, or 30 mAuntilit is turnedon againby settingthe ON control IntegratedInrushCurrentTime-out(8 ms)signaloff and thenon.
Power Supply VIN VOUT CL ON OC GND ON OFF C RLOAD VDD IN Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS22946 SLVS984B –SEPTEMBER 2009–REVISED MARCH 2015
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