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LP3382S Datasheet(PDF) 1 Page - Lowpower Semiconductor inc |
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LP3382S Datasheet(HTML) 1 Page - Lowpower Semiconductor inc |
1 / 9 page Preliminary Datasheet LP3382S LP3382S – 00 Version 1.0 Datasheet OCT.-2012 www.lowpowersemi.com Page 1 of 9 High Performance, Constant Current Switching Regulator For 8PCS White LED In Series General Description The LP3382S is a 1.2MHz PWM boost switching regulator designed for constant- current white LED driver applications. The LP3382S can drive a string of up to 8 white LEDs in series, ensuring uniform brightness and eliminating several ballast resistors. The LP3382S implements a constant frequency 1.2MHz PWM control scheme. The high frequency PWM operation also saves board space by reducing external component sizes. To improve efficiency, the feedback voltage is set to 250 mV, which reduces the power dissipation in the current setting resistor. Highly integration and internal compensation network minimizes as 5 external component counts. Optimized operation frequency can meet the requirement of small LC filters value and low operation current with high efficiency. Ordering Information LP3382S F: Pb-Free Package: B6: SOT23-6 Pin Configurations (SOT23-6) Features High Efficiency: 92% 1.2MHzFixed-Frequency PWM Operation Maximum Output Voltage up to 29V Operating Range : 2.7V to 5.5V Shutdown Supply Current:<1uA Available in SOT23-6 Package Built-in 29V Over Voltage Protection Minimize the External Component RoHS Compliant and 100% Lead (Pb)-Free Applications WLED Backlight driver OLED Backlight driver PDA MID/PTV Typical Application Circuit Panel EN 4 FB 3 Vin 6 OVP 5 LP3382S 4.7uH 2 Vin Rset Cin 10uF Cout 2.2uF Marking information Part Number Top Marking Package LP3382SB6F F5 SOT23-6 Other Information please view website: www.lowpowersemi.com. |
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