lp3303 Lowpower Semiconductor inc, lp3303 Datasheet
lp3303
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lp3303 Summary of contents
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... General Description The LP3303 is a 1.0MHz PWM boost switching regulator designed for constant- current white LED driver applications. The LP3303 can drive a string white LEDs from a 3.6V in series, ensuring uniform brightness and eliminating several ballast resistors. The LP3303 implements a constant frequency 1 ...
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... CTRL Pin Voltage-------------------------------------------------------------------------------------------------------−0.3V to 10V FB Pins -------------------------------------------------------------------------------------------------------------------−0.3V to 2.0V Power Dissipation 25°C SOT-23-5 ------------------------------------------------------------------------0.455W D A Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------------------ 260°C Operation Temperature Range --------------------------------------------------------------------------------- Storage Temperature Range ---------------------------------------------------------------------------------------- LP3303 –03 Ver. 1.3 Datasheet Feb.-2009 Preliminary Datasheet LP3303 − 40°C to 80°C − 65°C to 150°C Page ...
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... Operation Frequency F Maximum Duty Cycle Dimming Frequency Feedback Voltage LP3303 MOSFET On Resistance of MOSFET R Protection OVP Threshold V OVP Sink Current OCP Shut Down Voltage V Enable Voltage V LP3303 –03 Ver. 1.3 Datasheet Feb.-2009 Preliminary Datasheet Test Condition Symbol DD DD FB=0V, Switch DD V < 0. 3.0~4.3V IN OSC DS(ON) ...
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... Typical Operating Characteristics LP3303 –03 Ver. 1.3 Datasheet Feb.-2009 Preliminary Datasheet LP3303 Page ...
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... LP3303 –03 Ver. 1.3 Datasheet Feb.-2009 Preliminary Datasheet LP3303 Page ...
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... Applications Information LED Current Control The LP3303 regulates the LED current by setting the current sense resistor (Rset) connecting to feedback and ground. The internal feedback reference voltage is 200mV. The LED current can be set from following equation easily. I =200mV/Rset LED(mA) In order to have an accurate LED current, precision resistors are preferred (1% is recommended) ...
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... Packing information LP3303 –03 Ver. 1.3 Datasheet Feb.-2009 Preliminary Datasheet LP3303 Page ...