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怎么选择电源芯片?

Other Parts Discussed in Thread: TPS54040

最近做的电路里,是输入12V,输出3.3V,输出电流150ma的,要求低功耗。想选择一个电源芯片,请帮忙推荐个型号。

还有选的芯片是开关的好还是ldo的好?有什么区别吗?