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RT9285 是集成了續流二極體的高頻、非同步 Boost 架構轉換器,可用於驅動2~5只串聯連接的白光 LED 或是為 OLED 供電。它的內部集成了軟啟動功能以降低衝擊電流,在 1MHz 的固定頻率下工作,因而可以使用小型的外部元件,解決 EMI 問題也很簡單。IC 的過壓保護點設定在 20V,容許使用價格適宜的、較低耐壓等級的小型輸出電容。LED 電流可用外部電流檢測電阻 R<sub>SET</sub> 進行設定,其回饋電壓為 250mV 。RT9285 的封裝是小型的 TSOT-23-6 、 2mm x 2mm 的 WDFN-8L 和 XDFN-8L,在使用中可以節省 PCB 空間,保持總成本的最優化。
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<div class="spec-list"><ul class="lv1"><li>V<sub>IN</sub> 工作電壓範圍: 2.7V~5.5V </li><li>效率高達 85% </li><li>內部功率 MOSFET 耐壓為 22V </li><li>1MHz 固定工作頻率 </li><li>內部集成了二極體 </li><li>零衝擊的數字調光方法 </li><li>輸入欠壓鎖定保護 </li><li>輸出過壓保護 </li><li>內部集成軟起動和補償電路 </li><li>TSOT-23-6 、 8引腳 WDFN 和 XDFN 封裝 </li><li>符合 RoHS 規範的無鉛封裝 </li></ul></div>
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<div class="spec-list"><ul class="lv1"><li>Cellular Phones </li><li>Digital Cameras </li><li>PDAs and Smart Phones </li><li>Porbable Instruments </li><li>MP3 Player </li><li>OLED Power </li></ul></div>
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