Zetex - ZXLB1600 LCD and OLED bias boost converter - STN, CSTN screens datasheet
DESCRIPTIONTheZXLB1600inductiveswitchingboostconverteracceptsaninputvoltageofbetween1.6Vand5.5Vandprovidesanadjustableoutputvoltageofupto28VforLCDandOLEDbias.Thedevicecontainsanoutputswitchandasecondswitchtoisolatethecoilfromtheinputtoprovidetrueisolationinshutdownmode.Theoutputcanbeadjustedbymeansofanexternallyapplieddcvoltage,aPWMcontrolsignal,orexternalfeedbackresistorsandcansupplytypically10mAofoutputcurrentatmaximumoutputvoltage.Highercurrent is available at lower output voltages.Theinputvoltagerangeacceptsanumberofbatterysolutions,includingdualdrycellandsingleLi-IoncellsandPFMoperationmodeallowstheoutputtoberegulatedwithhighefficiencyunderlightornoloadconditions.Theswitchingfrequencyrangepermitstheuse of miniature surface mount inductors.Alowbatterycomparatorisprovidedtoindicatewhentheinputvoltagehasfallentowithin2%ofapresetthreshold.Thisthresholdissetinternally,butcanbeadjustedexternallytoanyvoltagewithinthesupplyvoltage range.FEATURESWide input voltage range: 1.6 to 5.5VAdjusta FEATURESWide input voltage range: 1.6 to 5.5VAdjustable output voltage up to 28V, usingPWMor analog control voltageInternal PWM filterTrue shutdown (output isolated from input)Internal output switch and current senseLow quiescent current: (75A max)5A (max) shutdown current (including lowbattery comparator)Up to 500kHz switching frequencyHigh efficiencySmall MSOP10 packageLow external component countAPPLICATIONSPDAsMobile phones - OLED sub displaysDigital camerasPortable internet appliancesPalmtopcomputersGPS terminalsZXLB1600ISSUE 3 - SEPTEMBER 2003SEMICONDUCTORS 1LCD AND OLED BIAS BOOST CONVERTER - STN, CSTN SCREENSTYPICAL APPLICATION CIRCUITABSOLUTE MAXIMUM RATINGS(Voltages toGNDunless otherwise stated)Output voltage30VInput voltage7VSwitch output current500mAPower dissipation800mWOperating temperature0 to 70CStorage temperature-55 to 125CJunction temperature150CZXLB1600ISSUE 3 - SEPTEMBER 2003SEMICONDUCTORS 2SymbolParameterConditionsMinTypMaxUnits V INInputvoltage (1)1.65.5V INSuppl DESCRIPTIONTheZXLB1600inductiveswitchingboostc
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CONNECTIONSZXLB1600ISSUE, MSOP100C, IN100nA, OUT28V510mA, BLOH29V2, MSOP10, EN0V1, OUT28V,100, 70CZXLB1600ORDERING, LP02506, ZXLB1600ISSUE, EN0V-100nA, OUT20V80, 25CZXLB1600ISSUE, IN40100, ZXLB1600, DO1608, OUT1mA,2VV, 14V.ZXLB1600ISSUE, IN28V, R15V280k91k12V715k82k18V1
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