Stand-alone synchronous switch-mode bq24610 is a Li-ion, Li-polymer battery charger

This post sponsored by Texas Instruments.

The bq24610 is a highly integrated Li-ion or Li-polymer switch-mode battery charge controller. It offers a constant-frequency synchronous switching PWM controller with high-accuracy charge-current and voltage regulation, charge preconditioning, termination, adapter current regulation, and charge status monitoring. 

The bq24610 charges the battery in three phases: preconditioning, constant current, and constant voltage. Charge is terminated when the current reaches a minimum user-selectable level. A programmable charge timer provides a safety backup. The bq24610 automatically restarts the charge cycle if the battery voltage falls below an internal threshold, and enters a low-quiescent-current sleep mode when the input voltage falls below the battery voltage. The bq24610 controls external switches to prevent battery discharge back to the input, to connect the adapter to the system, and to connect the battery to the system using 6V gate drives for better system efficiency. The bq24610 features Dynamic Power Management (DPM). These features reduce battery charge current when the input power limit is reached to avoid overloading the ac adapter when supplying the load and the battery charger simultaneously. A highly accurate current-sense amplifier enables precise measurement of input current.

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