ZHCSGR3C May 2017 – September 2021 BQ25606
PRODUCTION DATA
The device has built-in safety timer to prevent extended charging cycle due to abnormal battery conditions. The safety timer is two hours when the battery is below VBATLOWV threshold and 10 hours when the battery is higher than VBATLOWV threshold.
During input voltage, current, JEITA cool or thermal regulation, the safety timer counts at half clock rate as the actual charge current is likely to be below the register setting. For example, if the charger is in input current regulation throughout the whole charging cycle, the safety timer will expire in 20 hours.
During the fault, timer is suspended. Once the fault goes away, the timer resumes. If user stops the current charging cycle, and start again, timer gets reset.