SLVSDU0B September 2017 – September 2019 BQ25910
PRODUCTION DATA.
Refer to the PDF data sheet for device specific package drawings
The device terminates a charge cycle when the battery voltage is at VREG, and the current is below termination current (ITERM). After the charging cycle is completed, the converter turns off and enters HIZ mode. At this point, the master charger can continue charging the battery down to a lower termination current, or just provide the system load from the adapter through its buck converter.
When termination occurs, the status register CHRG_STAT is set to 000, the CHRG_TERM_FLAG is set to 1, and an INT pulse is asserted to the host. The CHRG_TERM_FLAG should be used to determine if termination was detected. Termination is temporarily disabled when the charger device is in input current, input voltage or thermal regulation.
Termination can be disabled by writing 0 to EN_TERM bit prior to charge termination. In this case, the device will continue regulating the battery voltage to VREG value until the safety timer runs out or until the EN_CHG bit is cleared.