RY1117B

1ALow-DropoutLinearRegulator

Features

?Maximumoutputcurrentis1.2A?Standbycurrent:2mA(typ.)

?Rangeofoperationinputvoltage:Max15V?Loadregulation:0.2%/A(typ.)

?Lineregulation:0.03%/V(typ.)?EnvironmentTemperature:-40℃~85℃

Applications

?PowerManagementforComputerMotherBoard,?DVDDecodeBoard

GraphicCard?ADSLModem

?LCDMonitorandLCDTV?PostRegulatorsforSwitchingSupplies

GeneralDescription

RY1117Bisaseriesoflowdropoutthree-terminalregulatorswithadropoutof1.3Vat1Aloadcurrent.RY1117B

featuresaverylowstandbycurrent2mAcomparedto5mAofcompetitor.

Otherthanafixedversion,VOUT=1.2V,1.5V,1.8V,2.5V,2.85V,3.3V,and5V,RY1117Bhasanadjustableversion,

whichcanprovideanoutputvoltagefrom1.25to12Vwithonlytwoexternalresistors.

RY1117Boffersthermalshutdownfunction,toassurethestabilityofchipandpowersystem.Itusestrimming

techniquetoguaranteeoutputvoltageaccuracywithin2%.Otheroutputvoltageaccuracycanbecustomizedon

demand,suchas1%.

RY1117BisavailableinSOT-223,TO-252,SOT-89powerpackage.

TypicalApplicationCircuit

VINVOUT

INOUT

COUT

10μF