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RT8129A 为一可输出 5V/12V供电的单相同步 Buck 控制器。其集成固定导通时间 PWM 控制器及MOSFET驱动器与内置靴带式二极管,专门设计用来提高在轻载条件下的转换器效率。在轻载条件时,它会自动地在二极管仿真模式下运作,以降低开关频率并提升转换效率。其他特性包括电源良好指示、使能/禁止控制和内置软启动功能。RT8129A也提供保护功能包括过压保护(OVP)、欠压保护(UVP)、电流限制和热关机保护。此设备使用无损低侧MOSFET RDS(ON) 的电流限制检测技术,并可藉由连接LGATE/ OCSET和GND之间的电阻来设定电流限制门坎。RT8129A 是具有极高性价比的高效电源转换器件,其封装为 WDFN-10L 3x3。
宽输入电压范围:2.5V~25V
高轻载效率
集成高驱动能力N-MOSFET栅极
驱动和嵌入式开关升压二极管
单IC电压 : 4.5V~13.2V
电源良好指示
使能/禁止控制
内置软启动
可程序设计的电流限制门坎
欠压保护
过压保护
热关机保护
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