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蓝牙充电选型

Other Parts Discussed in Thread: CC2541, TPS62740, BQ24040, TPS62230用CC2541做一款蓝牙产品,选用了BQ24040作为锂电池充电管理芯片,后级选用了TPS62740作为电源转换,感觉成本有点高,有没有成本低点的方案推荐?