SLUSDU0 September 2019 BQ21061
The BQ21061 monitors the TS voltage and sends an interrupt to the host whenever it crosses the VHOT, VWARM, VCOOL and VCOLD thresholds which correspond to different temperature thresholds based on the NTC resistance and biasing. These thresholds may be adjusted through I2C by the host. The device will also disable charging if TS pin exceeds the VTS_OPEN threshold.
The TS biasing circuit is shown in Figure 23. Note that the respective VTS for TCOLD (0°C), TCOOL (10°C), TWARM (45°C) and THOT (60°C) changes for every NTC, therefore the threshold values may need to be adjusted through I2C based on the supported NTC type.
The BQ21061 supports by default the following thresholds for a 10-KΩ NTC.