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求一款降压横流集成IC

Other Parts Discussed in Thread: TPS62260

需求要求:输入电压3.4-3.8V,输出驱动一颗LED,LED标称值3V/350mA;要求输出电流在25mA-500mA内可调,调节方式PWM或者IIC,电路尽量简单,因板子体积有限

原先推荐的我看不能满足要求