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RT4533/A 是一款高度整合的 LED 驅動 IC,可驅動 10 顆串聯 WLED。它由電流模式升壓轉換器組成,並整合 36.5V/1.2A 功率開關。RT4533/A 支援 2.5V 至 5.5V 的寬輸入電壓範圍,並以 1.1MHz 固定頻率運作。LED 電流透過外部電阻設定,回授電壓調節至 200mV / 300mV。在亮度調光方面,RT4533/A 支援 PWM 調光,藉此決定回授參考電壓。
RT4533/RT4533A 電路圖
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<div class="spec-list"><ul class="lv1"><li>2.5V to 5.5V Input Voltage Range </li><li>36.5V Open LED Protection for 10 WLEDs </li><li>PWM Dimming Brightness Control </li><li>200mV / 300mV Reference Voltage with ±2% Accuracy </li><li>1.1MHz Switching Frequency </li><li>Built-In Soft-Start </li><li>Over-Temperature Protection </li><li>Internal Compensation </li><li>Current Limit </li><li>RoHS Compliant and Halogen Free </li></ul></div>
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RT4533/RT4533A 訂購資訊
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<div class="spec-list"><ul class="lv1"><li>Cellular Phones </li><li>Digital Cameras </li><li>Probable Instruments </li></ul></div>
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