JAJSQM6B June 2023 – February 2024 BQ25622E
PRODUCTION DATA
The BQ25622E monitors the internal junction temperature TJ to avoid overheating the chip and limits the IC junction temperature in buck mode. When the internal junction temperature exceeds the TREG thermal regulation limit (TREG register configuration), the device lowers the charging current. During thermal regulation, the safety timer runs at half the clock rate, and the TREG_FLAG and TREG_STAT bits are set to 1. Additionally, the device has thermal shutdown to turn off the converter and BATFET when IC junction temperature exceeds TSHUT. The fault bit TSHUT_FLAG is set to 1 and TSHUT_STAT transitions to 1. The BATFET and converter are re-enabled when IC temperature is TSHUT_HYS below TSHUT, and TSHUT_STAT transitions to 0.