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RT9287A-FQGQW Datasheet(PDF) 4 Page - Richtek Technology Corporation |
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RT9287A-FQGQW Datasheet(HTML) 4 Page - Richtek Technology Corporation |
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4 / 14 page  RT9287A Preliminary 4 DS9287A-00 July 2007 www.richtek.com Absolute Maximum Ratings (Note 1) Supply Input Voltage, VIN, VDD ----------------------------------------------------------------------------------------- −0.3V to 6V LX Input Voltage ----------------------------------------------------------------------------------------------------------- −0.3V to 22V Output Voltage, VOUT ----------------------------------------------------------------------------------------------------- −0.3V to 21V The Other Pins ------------------------------------------------------------------------------------------------------------- −0.3V to 6V Power Dissipation, PD @ TA = 25 °C WDFN-12L 3x3 ------------------------------------------------------------------------------------------------------------- 0.606W Package Thermal Resistance (Note 4) WDFN-12L 3x3, θJA ------------------------------------------------------------------------------------------------------- 165°C/W WDFN-12L 3x3, θJC ------------------------------------------------------------------------------------------------------- 8.2°C/W Junction Temperature ----------------------------------------------------------------------------------------------------- 150 °C Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------------- 260 °C Storage Temperature Range -------------------------------------------------------------------------------------------- −65°C to 150°C ESD Susceptibility (Note 2) HBM (Human Body Mode) ---------------------------------------------------------------------------------------------- 2kV MM (Machine Mode) ------------------------------------------------------------------------------------------------------ 200V Recommended Operating Conditions (Note 3) Junction Temperature Range -------------------------------------------------------------------------------------------- −40°C to 125°C Ambient Temperature Range ------------------------------------------------------------------------------------------- −40°C to 85°C Electrical Characteristics To be continued Parameter Symbol Test Condition Min Typ Max Units Boost System Supply Input Operation voltage Range VDD 2.7 -- 5.5 V Under Voltage Lock Out VUVLO 1.7 2 2.3 V Quiescent Current IQ VFB = 1.5V, No switch -- 300 450 μA Supply Current IIN VFB = 0V, Switch -- -- 2 mA Shutdown Current ISHDN VENB < 0.4V -- 2 5 μA Line Regulation VDD2 = 3V to 4.3V -- -- 3 % Oscillator Operation Frequency fOSC -- 1 -- MHz Maximum Duty Cycle 85 90 -- % Reference Voltage Feedback Reference Voltage VREF 0.237 0.25 0.263 V Diode Forward Voltage VFW IFW = 100mA -- 0.9 -- V (VDD = 3.7V, FREQ left floating, VIN = VOUT + 1V, VEN = VIN, CIN = COUT = 1 μA, TA = 25°C, unless otherwise specified) |
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