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BQ34Z100-G1: Application issues.

Expert 1910 points
Part Number: BQ34Z100-G1

Tool/software:

Hi Team,

BQ34Z100-G1 encountered an issue with high low-temperature sampling. Please help analyze the cause
The TS of BQ34Z100-G1 is connected to 10K NTC according to the specifications (as shown in the figure below). At room temperature, the TS temperature is consistent with the actual temperature, but when the low temperature is below -20 ℃, the TS temperature is relatively higher than the actual temperature (as shown in the table below); The specification sheet shows that the TEMP Error gradually decreases when the TEMP<-20 ℃, but this is contrary to our actual test results.
1. Does the specification sheet indicate a trend display error for Temp Error?
2. If the Temp Error trend is correct, why does the TS display a higher temperature at low temperatures?