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RT2856是一款高效率、單晶同步降壓型DC/DC轉換器,在4.5V~18V的輸入電壓範圍可提供最高為6A的輸出電流。RT2856 使用外部補償的電流模式控制架構,在很寬的負載範圍和輸出電容配置下都可得到最佳的瞬態回應。它採用逐週期電流限制措施對抗輸出短路帶來的影響,其軟啟動功能可消除啟動過程中輸入電流衝擊。其故障保護措施包括輸出欠壓保護、輸出過壓保護和過熱保護。低電流消耗之電源關閉模式可完全關斷輸出,有助於簡化電池供電系統的電源管理。
集成 26mΩ / 19mΩ MOSFET 功率開關
輸入電壓範圍:4.5V~18V
工作頻率可調範圍:200kHz~1.6MHz
電流模式控制架構
外同步時鐘信號頻率範圍:200kHz~1.6MHz
-40°C ~ 85°C 範圍內的參考電壓:0.8V±1%
輸出預偏置下的啟動過程是單調的
可調軟啟動
Power Good 指示
欠壓/過壓保護
輸入欠壓鎖定保護
符合 RoHS 規範,不含鹵素
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