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MSP430用锂电池供电如何设计能让4.2V转到3.3V达到最大的效率

Other Parts Discussed in Thread: TPS783

我想设计一款锂电池供电的430产品,能够达到最长的续航时间。但是如果使用LDO模式就有很多的电量消耗在LDO芯片上,最好是有一种电荷泵芯片,因为电荷泵芯片效率高,成本低。另外说明一下产品的设计功耗在10mA电流以下。