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RT2808A是一款電流模式非同步降壓轉換器,可在寬輸入電壓範圍5.5V至36V實現優異的負載調整率和電源調整率,且可支援達3A的輸出電流。電流模式操作能提供快速瞬態回應,也較易達到迴路穩定。可調整的軟啟動降低啟動時輸入源上的應力。在電源關閉模式下,調節器僅消耗25μA的供應電流。RT2808A只需要最少的、方便可取得的、外部元件,可提供一個體積小的解決方案。RT2808A提供了保護功能,包括輸入欠壓鎖定 (UVLO),逐週期電流限制 (cycle-by-cycle current limit),短路保護 (short circuit protection) 和過溫保護 (thermal shutdown protection)。RT2808A採用SOP-8(裸露焊盤)封裝。
3A 輸出電流
寬操作輸入範圍 5.5V 至 36V
可調整輸出電壓1.222V 至 26 V
高達90%的高效率
內部補償以減少外部元件數
內部軟啟動
110mΩ 內部功率MOSFET開關
25μA 電源關閉模式
固定頻率500kHz
過溫保護
逐週期電流限制
採用SOP-8 ( 散熱焊盤 ) 封裝
符合RoHS標準及不含鹵素
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