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Product Spec Banner
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RTQ6345是負載能力為5A、高效率、採用峰值電流模式控制架構的非同步Buck轉換器，輸入電壓範圍為4V~42V，輸出電壓可調範圍為0.8V~V<SUB>IN</SUB>。其靜態耗電低，集成了低R<SUB>DS(ON)</SUB>的 MOSFET上橋開關，可在寬闊的負載範圍內獲得高轉換效率。由於採用週邊補償簡單的峰值電流模式控制架構，容許使用小型電感，具有瞬態回應速度快和回路穩定性好的特性。</br>其工作頻率在100kHz~2500kHz間可調，選擇輸出濾波元件時可在效率和元件尺寸間進行優化。其最小導通時間很短，即使在降壓比很高時也能保持固定的工作頻率。在對切換雜訊敏感的應用中，可以使用300kHz~2200kHz的外部信號對其進行同步操作。</br>RTQ6345具有完備的保護性功能設計，如輸入欠壓鎖定保護、輸出欠壓保護、輸出過壓保護、過流保護和熱關機保護等，有逐週期電流限制保護可應對輸出端短路等惡劣狀況，有軟啟動設計可消除啟動期間的電流衝擊。</br>RTQ6345使用WDFN-10L 4x4和具有外露式散熱焊盤的SOP-8封裝供貨。
RTQ6345 電路圖
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<div class="spec-list"><ul class="lv1"><li>輸入電壓範圍： <ul class="lv2"> <li></li><li>4.5V~42V </li><li>4V~42V（軟啟動結束以後） </li></ul> </li><li>輸出電壓範圍：0.8V~V<sub>IN</sub> </li><li>參考電壓：0.8V±1.5% </li><li>峰值電流模式控制架構 </li><li>集成70mΩ MOSFET上橋開關 </li><li>靜態電流消耗：100μA </li><li>關機電流消耗：2.25μA </li><li>工作頻率可調範圍：100kHz~2.5MHz </li><li>可同步工作頻率範圍：300kHz~2.2MHz </li><li>PSM 輕載節能模式 </li><li>集成自舉電容複充開關，使能輕載低壓差直通工作模式 </li><li>型號可選外部可調軟啟動 </li><li>使能控制 </li><li>可調節欠壓鎖定保護閾值和滯回值 </li><li>內建欠壓鎖定保護、欠壓保護、過壓保護、過流保護和過熱保護等功能 </li></ul></div>
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RTQ6345 訂購資訊
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RTQ6345
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RTQ6345
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<div class="spec-list"><ul class="lv1"><li>通訊和工業應用中的12V、24V電源系統 </li><li>工業自動化與電機控制系統 </li><li>車用配件之GPS、娛樂資訊系統 </li></ul></div>
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