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IS31LT3353 Datasheet(PDF) 4 Page - Integrated Silicon Solution, Inc |
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IS31LT3353 Datasheet(HTML) 4 Page - Integrated Silicon Solution, Inc |
4 / 15 page IS31LT3353 Integrated Silicon Solution, Inc. – www.issi.com 4 Rev. A, 10/13/2014 ABSOLUTE MAXIMUM RATINGS (Note 1) Input voltage, VIN -0.3V ~ +43V ISENSE voltage, VSENSE VIN-5V ~ VIN+0.3V (VIN≥5V) -0.3V ~ VIN+0.3V (VIN<5V) LX output voltage, VLX -0.3V ~ +43V Adjust pin input voltage, VADJ -0.3V ~ +6V Switch output current, ILX 1.2A Power dissipation, PD(MAX) (Note 2) 0.46W Operating temperature, TA -40°C ~ +125°C Storage temperature, TST -55°C ~ +150°C Junction temperature, TJMAX 150°C Junction to ambient, θJA 271°C/W ESD (HBM) at LX pin ESD (HBM) at other pins ESD (CDM) 1kV 3kV 1kV Note 1: Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other condition beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Note 2: Detail information please refer to package thermal de-rating curve on Page 12. ELECTRICAL CHARACTERISTICS Test conditions: VIN = 12V, TA =TJ = 25°C, unless otherwise stated. (Note 3) Symbol Parameter Conditions Min. Typ. Max. Unit VIN Input voltage 6 40 V IINQ_OFF Quiescent supply current with output off ADJ pin grounded 70 120 160 μA IINQ_ON Quiescent supply current with output switching ADJ pin floating 450 600 μA VSENSE Mean current sense threshold voltage 97 100 103 mV VSENSEHYS Sense threshold hysteresis ±15 % ISENSE ISENSE pin input current VSENSE =VIN -0.1V 8 μA VREF Internal reference voltage Measured on ADJ pin with pin floating 1.2 V VADJ External control voltage range on ADJ pin for dc brightness control 0.3 1.2 V VADJ_OFF DC voltage on ADJ pin to switch chip from active (on) state to quiescent (off) state VADJ falling 0.15 0.2 0.25 V VADJ_ON DC voltage on ADJ pin to switch chip from quiescent (off) state to active (on) state VADJ rising 0.2 0.25 0.3 V RADJ Resistance between ADJ pin and VREF 500 kΩ ILX_MEAN Continuous LX switch current (Note 4) 1 A |
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