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锂电池稳压芯片选型

Other Parts Discussed in Thread: CC2540

我们做手环的,采用的MCU是CC2540,。锂电池是普通的3.7-4.2V的,容量400mAh,现在想把锂电池电压稳压到3.0V,考虑功耗最小优先,就是尽可能降低整个电路板的功耗,是充一次能使用较长时间。选用什么型号的稳压芯片比较好呢,麻烦推荐一款(外围电路尽量简单)吧?