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RT9302 是高性能的定電流 LED 驅動器,可對3只 LED 進行驅動,使它們以相同的電流進行工作。每個 LED 通道的電流可達 20mA,精度可達1%,通道間的匹配誤差在 0.7%以內。RT9302 提供16級亮度調節功能,LED 電流可在 1.25mA~20mA 之間進行設定,只需在 EN 端施加脈衝信號即可實現。只要 EN 端的信號被拉低超過 20μs,流過 LED 的電流即可被關斷,關斷以後的典型漏電流僅有 4μA。RT9302 的封裝是 TSOT-23-8,其最大高度為 1mm 。
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<div class="spec-list"><ul class="lv1"><li>支援最多3只 WLED </li><li>每個通道輸出電流高達 20mA </li><li>支持脈衝和 PWM 調光 </li><li>1% LED 電流精度 </li><li>0.7% LED 電流匹配誤差 </li><li>16級亮度控制 </li><li>低雜訊,無 EMI 之虞 </li><li>關機電流極低,僅 4μA </li><li>符合 RoHS 規範,完全無鉛 </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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