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RT5771A 是高效率的同步 Buck 轉換器,可在 2.7V至5.5V 的輸入電壓範圍內輸出 0.6V至VIN 的電壓,負載能力高達 3A。它集成了低導通電阻的功率開關,效率高,無需使用蕭基二極體。其工作頻率為 1MHz,責任週期可高達 100%,支援直通模式,可以大大擴展可擕式系統的電池使用時間。採用電流模式的控制架構,補償電路內置,可在廣泛的負載範圍內獲得優化的瞬態回應特性,對輸出電容沒有嚴格要求。其封裝為 WDFN-10L 3x3。
效率高達95%
低 RDS(ON) 電源開關:69mΩ/49mΩ
電流模式操作
強制PWM (FPWM) 模式
快速瞬態回應
固定工作頻率:1MHz
無需使用蕭基二極體
內置補償
0.6V 參考電壓,容許輸出低電壓
支援低壓差直通模式:責任週期可達100%
OCP, UVP, OTP
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