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请帮忙推荐下USB充电ic

Other Parts Discussed in Thread: BQ24074

现在想选用ti的USB充电ic,给单节锂电池充电,充电电流在100~500ma,希望ic带电源切换功能(连接USB电源使用USB给系统供电,断开USB电源自动使用电池供电)。

此外,系统电流最大为450ma左右(不包括充电电流),谢谢!