The bqSWITCHER? series are highly integrated Li-ion and Li-polymer switch-mode charge management devices targeted at a wide range of portable applications. The bqSWITCHER? series offers integrated synchronous PWM Controller
and power FETs
high-accuracy current and voltage regulation, charge preconditioning, charge status, and charge termination, in a small, thermally enhanced QFN package. The bqSWITCHER charges the Battery
in three phases: conditioning, constant current, and constant voltage. Charge is terminated based on userselectable minimum current level. A programmable charge Timer
provides a safety backup for charge termination. The bqSWITCHER automatically restarts the charge cycle if the Battery
voltage falls below an internal threshold. The bqSWITCHER automatically enters sleep mode when VCC supply is removed.