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Product Spec Banner
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The RT9363 is a compact, high efficient and highly integrated charge pump white LED driver. It maintains the highest efficiency by utilizing a x1/x2 fractional charge pump and low dropout current regulators. The RT9363 supports up to 3 white LEDs and regulates a constant current for uniform intensity. The part implements a 4-bit DAC for brightness control. Users can select external R<sub>SET</sub> or internal R<sub>SET</sub> by ISET pin. The dimming of white LEDs' current can be achieved by applying a pulse signal to the EN pin. There are totally 16 steps of current could be set by users. The part can support 15mA to 30mA for the 100% current setting. Users also can use the internal R<sub>SET</sub> for 100% current setting of 20mA just by connecting the ISET pin to V<sub>IN</sub>. The operating voltage range is from 2.8V to 5.5V. Internal soft start circuitry effectively reduces the in-rush current while both start-up and mode transition. The load is disconnected from V<sub>IN</sub> while shutdown and the shutdown current is less than 1μA.<br />RT9363 is available in a WDFN -10L 3x3 package.
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<div class="spec-list"><ul class="lv1"><li>Over 80% Average Efficiency Over Battery Life </li><li>Support Up to 3 White LEDs </li><li>80mV Typical Current Source Dropout </li><li>Support Up to 90mA Output Current </li><li>1% Typical LED Current Accuracy </li><li>0.7% Typical LED Current Matching </li><li>Soft Start Function </li><li>Automatic Charge Pump Mode Selection </li><li>1MHz Random Frequency Oscillator </li><li>Over Voltage Protection </li><li>16-Step Brightness Control </li><li>Low Input Noise and EMI </li><li>Low 1μA Shutdown Current </li><li>Flexible Current Setting </li><li>RoHS Compliant and 100% Lead (Pb)-Free </li></ul></div>
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<div class="spec-list"><ul class="lv1"><li>Mobile Phone, DSC, MP3 </li><li>White LED Backlighting </li><li>LCD Display Supply </li></ul></div>
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