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RT9284A/B 是緊湊型的高效、高集成度的 LED 驅動器,內建的 22V 耐壓 MOSFET 可支援2~5只串聯的 WLED 背光應用和相機閃光燈應用,高度整合的、包含補償電路在內的設計使得只需最少5只外部元件就可構成完整的應用電路。優選的工作頻率使得只需使用小型的 LC 濾波器,低工作電流使得轉換效率得到保證,內部軟啟動電路使得衝擊電流最小化。小型的 TSOT-23-5 和 TSOT-23-6 的封裝為取得最佳的 PCB 設計提供了低成本的方案。
RT9284A-E/RT9284B-E 電路圖
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<div class="spec-list"><ul class="lv1"><li>V<sub>IN</sub> 輸入電壓範圍:2.7V~5.5V </li><li>最高輸出電壓達 20V </li><li>調光時沒有衝擊電流,調光信號頻率範圍為 100Hz~100kHz </li><li>過壓保護 </li><li>輸出電壓 V<sub>OUT</sub>=12V時的輸出電流可達 100mA </li><li>關機情況下不耗電 </li><li>外部元件極少 </li><li>使用小型 LC 濾波器 </li><li>內置軟啟動 </li><li>符合 RoHS 規範,完全無鉛 </li></ul></div>
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RT9284A-E/RT9284B-E 訂購資訊
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<div class="spec-list"><ul class="lv1"><li>Camera Flash White LED </li><li>Mobile Phone, Smart Phone LED Backlight </li><li>PDA LED Backlight </li><li>Digital Still Camera </li><li>Camcorder </li></ul></div>
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