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求一个超低功率适合于法拉电容供电的IC

最近在做项目,需要一款低功率可用于法拉电容供电的、启动电压最好在1V以下的LED驱动IC,可以实现恒流控制,要求是输出电流1-20mA。求TI工程师推荐一款可用的芯片