ISL24111
9‐ChannelHighVoltageTFT‐LCDLogic
LevelShifterwithGateShapingFunction
KeyFeatures
9‐ChannelLogicLevelShifter
60VOperatingRange(V
ONx
‐V
OFF
)
V
ON1
[OUT1‐OUT7]andV
ON2
[OUT8,OUT9]PositivePowerSupplies,V
OFF
NegativeSupply
GateShapingFunctionwithFCLKInputforControl
+460mAand‐730mAPeakOutputCurrentfor[OUT1‐OUT7]
50nsPropagationDelay(TypicalLowtoHigh)
300nsRise,200nsFallTimefor[OUT1‐OUT7]
520nsRise,350nsFallTimefor[OUT8‐OUT9]
Pb‐Free(RoHSCompliant)
‐40°Cto+85°CAmbientOperatingRange
Description
TheISL24111isanineoutputchannelhighvoltageTFT‐LCDlogiclevelshifter.TheISL24111
convertslowpowerlogic‐levelinputtimingsignals,generatedbytheTFT‐LCDtiming
controller(TCON),tohighpowerlevel‐shiftedoutputsignalsusedtodriveaGate‐In‐Panel
(GIP)TFT‐LCD.Thehigh
voltagelevelshifterscanswingupto+60V,withpeakoutput
currentof+460mA(source)and‐730mA(sink).
Theoutputchannelsareorganizedintwoseparategroups.Levelshifteroutputchannels
OUT1throughOUT7arepoweredfromV
ON1
andV
OFF
(positiveandnegativesupplyvoltage
rails,respectively),whileOUT8andOUT9outputchannelsarepoweredfromV
ON2
andV
OFF
.
Eachoutputfeaturesalowimpedanceoutputstageandachievesfastriseandfalltimes
withminimalpropagationdelays.Thesefeaturesmakethedeviceidealfordrivinghighly
capacitiveloadsinTFT‐LCDapplications.
ThedevicefeaturesagateshapingfunctionthatcanbeutilizedtoreduceoverallLCD
system
powerandimproveimagequalitybyreducingflicker.Outputs1through6can
supportgateshaping,whileoutputs7through9preciselytracktheirrespectiveinput
TheISL24111isavailableinathermally enhanced24Ld4x4mmTQFNpackage.Itis
specifiedforoperationoverthe‐40°Cto+85°Cextendedambient
temperaturerange.