想做一个可以根据周围亮度自动调节LED亮度的系统,输入为市电变压后的24V,希望恒流输出,需要输出电流为1A~2A,PWM可调电流输出。请问该选择什么芯片?能否提供一些相关的典型应用电路? 谢谢大家!!!
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