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Product Spec Banner
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RT2857B是一款高效率、單晶同步降壓型DC/ DC轉換器，在4.5V至18V的輸入電源範圍可提供最高為6A的輸出電流。RT2857B 藉由外部補償的電流模式架構使得在很寬範圍的負載及輸出電容中，都可得到最佳的瞬態回應。逐週期電流限制保護元件免受輸出短路影響；軟啟動功能可在啟動過程中防止了輸入電流過沖。故障保護包括輸出欠壓保護，輸出過壓保護，過溫保護。低電流消耗之電源關閉模式會將輸出關閉，有助於電池供電系統的電源管理。
RT2857B 電路圖
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<div class="spec-list"><ul class="lv1"><li>低 R<sub>DS(ON)</sub> 功率MOSFET 開關26mΩ/19mΩ </li><li>輸入電壓範圍 : 4.5V 至 18V </li><li>可調整切換頻率 : 200kHz 至 1.6MHz </li><li>電流模式控制 </li><li>與外部頻率 :200kHz 至 1.6MHz 同步 </li><li>精確的參考電壓0.6V ± 1%，在 -40°C 至 85°C </li><li>單調啟動進入預偏壓模式 </li><li>可調整的軟啟動 </li><li>Power Good指示器 </li><li>可選打嗝模式 (Hiccup Mode) 和栓鎖模式 ( Latch-Off Mode)之欠壓保護 </li><li>過溫保護和過壓保護 </li><li>輸入欠壓鎖定 </li><li>符合RoHS標準及不含鹵素 </li></ul></div>
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RT2857B 訂購資訊
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RT2857B
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RT2857B
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<div class="spec-list"><ul class="lv1"><li>高性能負載點調節器 </li><li>筆記型電腦 </li><li>高密度和分散式供電系統 </li></ul></div>
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