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RT6218是簡單易用的2A同步Buck轉換器，工作電壓範圍為4.5V至18V，集成了低內阻的MOSFET功率開關，使用TSOT-23封裝，轉換效率高，具有高輸出電壓精準度。<br>RT6218採用改進型固定導通時間 (ACOT™) 控制架構，具有超快的瞬態回應速度，週邊元件少，在各種工作條件下的工作頻率都近乎固定不變，RT6218A僅在輕載條件下為改善效率表現而自動採用PSM工作模式，RT6218B則以強制性的PWM模式工作以獲得精確的電壓調整性能。<br>RT6218對上下橋的電流都會進行檢測以獲得極佳的過流保護特性，這種保護是逐週期進行的，可使器件在各種災難性的故障如輸出端短路、超載和電感飽和等情形下均能安然無恙。在啟動過程中，連接在SS端的軟起動電容可為RT6218帶來可設定的軟起動特性。在輸入欠壓、輸出欠壓和溫度過高等情形下，RT6218均能提供完善的安全保護，而正常條件下的工作又是一帆風順的。RT6218的封裝形式是內核倒裝的TSOT-23-8 (FC)，具有極佳的散熱性能。
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<div class="spec-list"><ul class="lv1"><li>輸入電壓範圍：4.5V至18V </li><li>2A負載能力，集成120mΩ/65mΩ功率開關 </li><li>ACOT™控制架構，具有極佳的瞬態回應特性 </li><li>固定開關工作頻率：650kHz </li><li>可選的工作模式 <ul class="lv2"> <li></li><li>自動節能模式 (PSM) (RT6218A) </li><li>強制PWM模式 (RT6218B) </li></ul> </li><li>針對低ESR陶瓷輸出電容進行了優化 </li><li>參考電壓精度為±1.5% </li><li>輸出電壓最高可達6.5V </li><li>軟起動特性外部可調 </li><li>在輸出端有預偏置的應用中實現單調上升過程 </li><li>通過上橋和下橋的保護實現強大的過流保護過程 </li><li>輸入欠壓鎖定保護 </li><li>打嗝模式的輸出欠壓保護 </li><li>過熱時實施停機保護 </li><li>使能控制 </li><li>Power Good指示 </li><li>符合RoHS規範，完全無鉛 </li><li>TSOT-23-8封裝 </li></ul></div>
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<div class="spec-list"><ul class="lv1"><li>機上盒 </li><li>液晶電視 </li><li>家用網路設備 </li><li>監控裝備 </li><li>各種常規應用 </li></ul></div>
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