mc34063a

MC33063AMC34063A

doc.docsou.com–DECEMBER2004–REVISEDJANUARY2011

1.5-APEAKBOOST/BUCK/INVERTINGSWITCHING

REGULATORS

CheckforSamples:MC33063A,MC34063A

FEATURES

WideInputVoltageRange:3Vto40V

HighOutputSwitchCurrent:Upto1.5A

AdjustableOutputVoltage

OscillatorFrequencyUpto100kHz PrecisionInternalReference:2%Short-CircuitCurrentLimitingLowStandbyCurrent

D (SOIC) OR P (PDIP) PACKAGE(TOP VIEW)

Switch Collector

Switch Emitter

Timing Capacitor

GND12348765Driver CollectorIpkVCCComparator Inverting Input

DRJ (QFN) PACKAGE

(TOP VIEW)

Switch Collector

Switch Emitter

Timing Capacitor

GND

Driver CollectorIpkVCCComparator Inverting InputThe exposed thermal pad is electrically bonded internally to pin 4 (GND) .

DESCRIPTION/ORDERINGINFORMATION

TheMC33063AandMC34063Aareeasy-to-useICscontainingalltheprimarycircuitryneededforbuilding

simpledc-dcconverters.Thesedevicesprimarilyconsistofaninternaltemperature-compensatedreference,a

comparator,anoscillator,aPWMcontrollerwithactivecurrentlimiting,adriver,andahigh-currentoutputswitch.

Thus,thedevicesrequireminimalexternalcomponentstobuildconvertersintheboost,buck,andinverting

topologies.

TheMC33063Aischaracterizedforoperationfrom–40°Cto85°C,whiletheMC34063Aischaracterizedfor

operationfrom0°Cto70°C.

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas

Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

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