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RT5771C 是高效率的同步 Buck 转换器,可在 2.7V至5.5V 的输入电压范围内输出 0.6V至VIN 的电压,负载能力高达 3A。它集成了低导通电阻的功率开关,效率高,无需使用萧基二极管。其工作频率为 1MHz,责任周期可高达 100%,支持直通模式,可以大大扩展便携式系统的电池使用时间。采用电流模式的控制架构,补偿电路内置,可在广泛的负载范围内获得优化的瞬态响应特性,对输出电容没有严格要求。其封装为 WDFN-10L 3x3。
效率高达95%
低 RDS(ON) 电源开关:69mΩ/49mΩ
电流模式操作
强制PWM (FPWM) 模式
快速瞬态响应
固定工作频率:1MHz
无需使用萧基二极管
内置补偿
0.6V 参考电压,容许输出低电压
支持低压差直通模式:责任周期可达100%
OCP, UVP, OTP
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