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LP3390 Datasheet(PDF) 1 Page - Lowpower Semiconductor inc |
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LP3390 Datasheet(HTML) 1 Page - Lowpower Semiconductor inc |
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1 / 8 page  Preliminary Datasheet LP3390 LP3390 Version 1.0 Datasheet NOV.-2013 www.lowpowersemi.com Page 1 of 8 High Performance, Constant Current Switching for White LED and Boost Convertor General Description The LP3390 is designed for constant- current white LED driver applications. It can drive a string of up to 8 white LED from a 3.3V supply or 3S9P white LED from a 5V supply in series. To improve efficiency, the feedback voltage is set to 200mV, which reduces the power dissipation in the current setting resistor. LP3390 also has constant-voltage boost applications and FB voltage is 1250mV. LP3390 implements a constant frequency 1.2MHz PWM control scheme. The high frequency PWM operation also saves board space by reducing external component sizes. Optimized operation frequency can meet the requirement of small LC filters value and low operation current with high efficiency. Order Information LP3390 □ □ □ F: Pb-Free Package Type QV:SQVF Pin Configurations Features High Efficiency: 95% 1.2MHzFixed-Frequency PWM Operation Maximum Output Voltage up to 30V Operating Range : 2.7V to 6V Shutdown Supply Current:<1uA Available in SOT23-6 Package Minimize the External Component. RoHS Compliant and 100% Lead (Pb)-Free Applications WLED Backlight driver Panel Bias Voltage supply Typical Application Circuit Marking Information Device Marking Package Shipping LP3390QVF LPS LP3390 xxxx QV:SQVF 3K/reel |
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