bq24630 Lithium Phosphate Battery Charger The Texas Instruments bq24630 switch-mode battery charge controller for lithium phosphate batteries offers a constant-frequency synchronous PWM controller with high accuracy current and voltage regulation, charge preconditioning, termination, adapter current regulation, and charge status monitoring. The TI bq24630 lithium phosphate battery charger charges the battery in three phases: preconditioning, constant current, and constant voltage. The bq24630 automatically restarts the charge cycle if the battery voltage falls below an internal threshold. This TI battery charger is optimized for use in power tool and portable equipment, personal digital assistants, hand-held terminals, and more.