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RT7739LG系列为强化高效能多重模式脉波宽度调变(PWM)之返驰式转换控制器, 并加入立锜的智能型抖频技术 (SmartJitterTM) 之专利。创新的智能型抖频技术,不仅可降低系统进入绿能模式所造成之电磁干扰,亦可消除输出抖频纹波。同时,RT7739LG兼具多重模式控制方案,可在连续导通模式 (CCM) 于具谷底切换至非连续导通模式 (DCM) 控制,达到产品效能升级之效益。RT7739LG为用于返驰式转换器的电流模式脉波宽度调变控制器。RT7739LG更结合完整及可编程的安全保护机制,包含:传输延迟补偿、输出过电压保护、外部过温度保护、大电容Brown-in/Brown-out保护。让产品研发设计者得更灵活的设计应用对应的商品,以较少的零件数及较低的成本,开发设计高效节能AC-DC电源产品。本产品的封装为SOT-23-6。
具专利之智能型抖频技术►改善切换式电源产生之电磁干扰►消除输出抖频纹波
可在连续导通模式与具有谷底切换的非连续导通模式下操作
超低启动电流 (<3μA)
精准过载保护
可编程传输延迟时间补偿
可编程输出过电压保护
可编程外部过温度保护
可编程大电容Brown-in/Brown-out 保护
驱动能力:200mA/-300mA
高噪声抗扰
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