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BQ25890: 搭建的电路,无法充电

Part Number: BQ25890


请问各位大佬,BQ25890搭建的电路,无法充电。除数据表推荐的典型电路外的其他器件均没有焊接。

SATA始终输出约1Hz的脉冲,电池约3.9V,接上电池SYS输出4.09V,拔掉电池SYS输出约3.7V;

接上电池BAT端为电池电压,拔掉电池BAT端0V.

未接电池波形

接电池波形