**Part Number:**BQ51003

Hi

We where trying to derive a thermal shutdown at around 60 degrees C, to that end we used the equations on page 23 of the data sheet https://www.ti.com/lit/ds/symlink/bq51003.pdf, and arrived at the two resistor values (denoted from equation 3) R1 = 1.5 kOhm and R3 = 1.2 kOhm with the beta value of 3380 K.

When testing hower the thermal shutdown happened at around 40 degrees C. So my question is if we are doing something wrong? The NTC we use is this https://product.tdk.com/system/files/dam/doc/product/sensor/ntc/chip-ntc-thermistor/catalog/tpd_commercial_ntc-thermistor_ntcg_en.pdf

With best regards

Christoffer