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RT9711A / B / C / D 為高性價比、低電壓、單 N-MOSFET 的高側電源開關，適用於自供電 (self-powered) 和匯流排供電 (bus- powered) 的串列匯流排 (USB) 應用。RT9711 系列都配備了電荷泵電路來驅動內部 MOSFET 開關。開關的 80mΩ 低 R<sub>DS(ON)</sub> 符合 USB 壓降要求。具有一個輸出指示信號來表示錯誤狀況給 USB 控制器。其它特點包括插入時的軟啟動，用來限制湧入電流、過熱關斷，用來防止開關因高電流負載造成的嚴重失效、欠壓鎖定 (UVLO)，確保有有效的輸入電壓出現前，IC 保持關機、雙埠 (RT9711A/B) 的故障電流限制在 2.5A (典型值)，單埠 (RT9711C/D) 限制在 1A，符合 USB 的電源要求、25μA 低靜態電流使該元件非常適用於可攜式電池供電的設備。RT9711 系列提供 SOT-23-5、TSOT- 23-5、SOP -8 和 MSOP -8 適用於不同板子的應用。
RT9711A/RT9711B/RT9711C/RT9711D 電路圖
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<div class="spec-list"><ul class="lv1"><li>符合 USB 規範 </li><li>內置 N-MOSFET </li><li>典型 R<sub>DS(ON)</sub> : 80mΩ (SOT-23-5 & TSOT-23-5) 和 90mΩ (SOP-8 & MSOP-8) </li><li>輸出可以被強制高於輸入 (Off-State) </li><li>低電源電流： </li><li>25μA 典型的開關打開狀態 (Switch On State) </li><li>1μA 典型的開關關閉狀態 (Switch Off State) </li><li>保證 RT9711A/B 1.5A 和 RT9711C/D 0.6A 的連續負載電流 </li><li>寬輸入電壓範圍： 2.5V 至 5.5V </li><li>開路汲極錯誤訊號 (Fault Flag) 輸出 </li><li>熱插拔應用 (軟啟動) </li><li>欠壓鎖定 (UVLO) 典型值 1.7V </li><li>電流限制保護 </li><li>過溫保護 </li><li>反向電流阻斷 (無二極體) </li><li>SOT-23-5 和 TSOT-23-5 小封裝 </li><li>UL 認證-E219878 </li><li>TUV <em>IEC60950-1 : 2005</em> 認證 </li><li>符合 RoHS 標準及 100% 不含鉛 </li></ul></div>
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RT9711A/RT9711B/RT9711C/RT9711D 訂購資訊
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<div class="spec-list"><ul class="lv1"><li>USB Bus/自供電集線器 </li><li>USB 周邊 </li><li>ACPI Power Distribution </li><li>PC 卡熱插拔 </li><li>筆記型電腦、主機板、桌上型電腦 </li><li>電池供電裝置 </li><li>熱插拔電源 </li><li>電池充電器電路 </li></ul></div>
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