BQ77905: BQ7790508設計問題

您好，不用 LD 功能，可以将 LD 引脚接地。

您好，请参考下面的内容

The thermistor is sampled for temperature measurement as shown in figure 9 of the datasheet. If you are measuring the VTB pin with a meter, it will measure about 0v. If you inspect the signal with an oscilloscope, you should see it pulse high approximately every 120ms.

DSG and CHG are most likely disabled due to a fault. Depending on how you are connecting your cells, there could be a voltage spike/dip during cell attach that is causing the device to go into OV or UV, and is staying in a fault due to the recovery hysteresis threshold. I recommend connecting the cells starting with BAT- and keeping an eye on transients while connecting. Keep in mind that resetting the device will not clear the faults until the fault recovery conditions are met.