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Product Spec Banner
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RT9469是一款用於攜帶式應用的開關模式單節鋰離子/聚合物電池充電器，它整合了同步PWM控制器、功率MOSFET、輸入電流檢測和調節以及高精準度穩壓和充電終止電路。此外，通過整合的感測電阻來調節充電電流。RT9469還支援 USB On-The-Go (OTG) 應用。<br>RT9469以經過優化的控制策略進行不同模式下的充電速度調節，其模式包括預充模式、快充模式和恒壓充電模式，所有關鍵的充電參數均可經過 I<sup>2</sup>C 介面進行程式設計。充電結束以後的電池電壓下將到預設的閾值以下時，RT9469會重啟充電流程以彌補其電能損失。當外部電源移除以後，RT9469自動進入睡眠模式以降低電池消耗。<br>它還具有欠壓保護、過壓保護、溫度調節和反向漏電保護等功能。<br>RT9469採用小型WL-CSP-25B 2.52x2.52封裝。
RT9469 電路圖
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<div class="spec-list"><ul class="lv1"><li>高精準度電壓/電流調節 </li><li>平均輸入電流調節 (AICR) : 0.1/0.15/0.5/至3A per 0.1A </li><li>最小輸入電壓調節 <ul class="lv2"> <li></li><li>適用於5V適配器 : 4V/4.25V/4.5V/4.75V </li><li>適用於9V適配器 : 7V/7.5V/8V /8.5V </li></ul> </li><li>充電電流調節精準度 : ±5% </li><li>充電電壓調節精準度 : ±1% (0至85°C) </li><li>整合功率MOSFET，最高可達2.275A充電速率 </li><li>支援USB充電檢測 </li><li>電池溫度檢測 </li><li>具有高達95%佔空比的同步0.75/1.5MHz固定頻率PWM控制器 </li><li>反向漏電保護，防止電池漏液 </li><li>熱調節和保護 </li><li>過溫保護 </li><li>輸入過壓保護 </li><li>I<sup>2</sup>C 通訊有插斷要求輸出 </li><li>自動完成充電過程 </li><li>符合 RoHS 規範，不含鹵素 </li></ul></div>
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RT9469 訂購資訊
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RT9469
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RT9469
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<div class="spec-list"><ul class="lv1"><li>手機 </li><li>個人信息設備 </li><li>平板電腦，行動電源 </li><li>可攜式儀器 </li></ul></div>
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