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RT5753 是輸入電壓範圍為 2.5V-6V、負載能力為 3A、簡單易用的同步 Buck 轉換器,其參考電壓為 0.6V,集成低 R<SUB>DS(ON)</SUB> MOSFET 功率開關,使用 WDFN-8L 2x2 和 WDFN-8SL 2x2 封裝。</br>RT5753 使用改進型固定導通時間(ACOT<SUP>®</SUP>)控制架構,瞬態回應速度快,週邊元件少,在各種工作條件下的工作頻率都幾乎保持不變。輕載條件下,RT5753 自動運行於 PSM 工作模式以維持其高轉換效率,RT5753 則以強制 PWM 模式工作已確保滿足電壓調整精度的要求。</br>RT5753 在上下橋都實施電流檢測以實現強勁的過流保護性能,逐週期實施的電流限制保護可確保器件在輸出端短路、過流和電感飽和等情形下也不會造成災難性的後果,內建的軟啟動功能可避免出現啟動時出現電流衝擊,它還同時具備輸入欠壓鎖定保護、輸出欠壓保護、過壓保護(RT5753)和過熱保護功能,可在各種工作條件下確保安全、平穩地運行。
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<div class="spec-list"><ul class="lv1"><li>輸入電壓範圍:2.5V-6V </li><li>集成 100mΩ/70mΩ 功率開關 </li><li>以 100% 占空比實現超低壓差工作 </li><li>內部集成 1% 精度參考電壓源 </li><li>典型工作頻率:1.2MHz </li><li>輕載節能模式(RT5753A/C/E/F) </li><li>ACOT<sup>®</sup> 控制架構 </li><li>內部集成 1.5ms/750μs 軟啟動 </li><li>使能控制輸入 </li><li>Power Good 指示 </li><li>上下橋均參與過流保護 </li><li>負電流過流保護(RT5753B/D) </li><li>輸入欠壓鎖定保護 </li><li>輸出欠壓保護 </li><li>過熱保護 </li><li>符合 RoHS 規範,不含鹵素 </li></ul></div>
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<div class="spec-list"><ul class="lv1"><li>行動電話和手持裝置 </li><li>機上盒和數據機 </li><li>WLAN 設備 ASIC 電源和存儲裝置電源 </li><li>通用負載點低壓 Buck 轉換器 </li></ul></div>
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