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Product Spec Banner
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RT9365是高性能的白光LED驅動器，集成有多個恒流源和自動進行模式選擇的電荷泵，通過使用x1/x1.5倍的電荷泵和低壓差恒流源維持其高效率。它在使用鋰離子電池驅動的白光LED應用中利用x1模式的低開環內阻和超低壓差電流源的特性並盡可能擴展其工作於此模式下的時間來優化效率表現。</br>RT9365可對最多5只LED進行驅動，並可將流過它們的電流都調整到一致以獲得同等的亮度，此電流受到一個4位DAC的控制，用戶在EN端上施加一串脈衝信號即可實現其在1.25mA至20mA之間的調整，總共有16級電流參數可供選擇。它的工作電壓範圍為2.8V至5V，有內部軟起動電路可以有效減低啟動期間和模式切換期間的輸入電流衝擊。在它停機不運作的時候，負載與V<sub>IN</sub>之間的電流連接是被切斷了的，總的電流消耗也下降到低於1μA。</br>RT9365採用WQFN 3x3-16L封裝。
RT9365 電路圖
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<div class="spec-list"><ul class="lv1"><li>全電池電壓範圍內85%以上的平均效率 </li><li>驅動最多5只LED </li><li>電流源最低壓差為80mV (典型值) </li><li>總負載能力為100mA </li><li>LED電流精準度為1% (典型值) </li><li>LED間電流誤差為0.7% (典型值) </li><li>含軟起動特性 </li><li>自動進行電荷泵模式選擇 </li><li>250kHz固定工作頻率 </li><li>輸出有過壓保護 </li><li>16級亮度控制 </li><li>輸入雜訊低，EMI問題少 </li><li>停機電流0.3μA </li><li>符合RoHS規範，完全無鉛 </li></ul></div>
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RT9365 訂購資訊
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RT9365
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<div class="spec-list"><ul class="lv1"><li>行動電話、相機、MP3 </li><li>白光LED背光應用 </li><li>液晶顯示器 </li></ul></div>
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