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IS31LT3352 Datasheet(PDF) 5 Page - Integrated Silicon Solution, Inc |
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IS31LT3352 Datasheet(HTML) 5 Page - Integrated Silicon Solution, Inc |
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5 / 14 page  IS31LT3352 Integrated Silicon Solution, Inc. – www.issi.com Rev. A, 09/01/2011 5 ABSOLUTE MAXIMUM RATINGS (NOTE 1) Symbol Parameter Rating VIN Input voltage -0.3V to +50V VISENSE ISENSE voltage VIN+0.3V to VIN-5V ,VIN>5V VIN+0.3V to -0.3V,VIN<5V VLX LX output voltage -0.3V to +50V VADJ ,VADJO, Rth, RNTC Pin input voltage -0.3V to +6V ILX Switch output current 800mA Ptot Power dissipation 1.2W TOP Operating temperature -40 to 85°C TST Storage temperature -55 to 150°C Tj MAX Junction temperature 150°C RθJA Junction to ambient 80°C/W ESD Susceptibility(human body mode) 2kV ELECTRICAL CHARACTERISTICS (VIN=12V, Tamb=25°C unless otherwise stated) (NOTE 2) Symbol Parameter Conditions Min. Typ. Max. Unit VIN Input voltage 6 40 V IINQoff Quiescent supply current with output off ADJI pin grounded 40 60 80 μA IINQon Quiescent supply current with output switching ADJI pin floating 450 600 μA VISENSE Mean current sense threshold voltage Measured on ISENSE pin with respect to VIN ADJI pin floating IS31LT3352-V1 91 95 101 mV IS31LT3352-V2 99 105 110 VSENSEHYS Sense threshold hysteresis ±15 % ISENSE ISENSE pin input current VSENSE =0.1V 8 10 μA VREF Internal reference voltage Measured on ADJI pin with pin floating 1.2 V VADJI External control voltage range on ADJI pin for dc brightness control 0.3 1.2 V VADJIoff DC voltage on ADJI pin to switch chip from active (on) state to quiescent (off) state VADJI falling 0.15 0.2 0.25 V VADJIon DC voltage on ADJI pin to switch chip from quiescent (off) state to active (on) state VADJI rising 0.2 0.25 0.3 V VOS RTH and RNTC pin offset voltage 10 mV |
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