JAJSKU9B December 2022 – February 2024 BQ25628 , BQ25629
PRODUCTION DATA
For battery protection during boost OTG and bypass OTG modes, BQ25628 and BQ25629 monitor the battery temperature to be within the TS_TH_OTG_COLD to TS_TH_OTG_HOT register settings. For a 103AT NTC thermistor with RT1 of 5.3 kΩ and RT2 of 31.1 kΩ, TS_TH_OTG_COLD default is -10°C and TS_TH_OTG_HOT default is 60°C. When temperature is outside of this range, the OTG mode is suspended with REGN remaining on. In addition, VBUS_STAT bits are set to 000, TS_STAT is set to 001 (TS_OTG_COLD) or 010 (TS_OTG_HOT), and TS_FLAG is set. In bypass OTG, PMID_GD drives low and the HSFET is disabled. Once the battery temperature returns to normal temperature, the boost OTG or bypass OTG is restarted and TS_STAT returns to 000 (TS_NORMAL).