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RT7271A 是高效、同步降壓架構的 DC/DC 轉換器,可用於輸入電壓介於 4.5V~17V 之間、輸出電流最大達 6A 的應用中。RT7271A 的電流模式控制架構容許其瞬態回應被調節至最優的狀態,逐週期電流限制對輸出端短路狀況提供了很好的保護,其軟啟動機制消除了啟動期間的輸入端電流衝擊,故障保護功能包括了輸出欠壓保護、輸出過壓保護和熱關機保護。在低電流消耗的關機模式下,輸出端的連接是被斷開的,這對電池供電的系統無疑是個好消息。
輸入電壓範圍: 4.5V~17V
輸出電流最大 6A
全溫度範圍內的參考電壓: 0.6V ±1%
短路狀況下鎖定保護
輸出端預載入情況下的啟動過程是單調的
500kHz 固定工作頻率
低導通電阻
上橋 MOSFET 開關: 45mΩ
下橋 MOSFET 開關:25mΩ
逐週期電流限制
帶有欠壓保護和過壓保護的電源狀態監視
輸入欠壓鎖定
熱關機保護
符合 RoHS 規範,不含鹵素
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