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BQ7790500PWR芯片VTB引脚对地无电压输出,CHG引脚对地无电压,



BQ7790500PW芯片使用4节锂电池,电压4.15±0.03V,电池从VC1开始安装到VC4,

2快样品测量引脚情况如下:

CHG引脚电压为0.2V,
VTB引脚输出0V,

VDD=16.5V,

AVDD=2.55V