JAJSSD2A October 2023 – December 2023 BQ25638
PRODUCTION DATA
デバイスごとのパッケージ図は、PDF版データシートをご参照ください。
The device 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.