The bq2461x is a highly integrated Li-ion or Li-polymer switched-mode battery charge controller. The device 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 bq2461x charges the battery in three phases: preconditioning, constant current, and constant voltage.

1.600-kHz NMOS-NMOS Synchronous Buck 
Converter

2.Stand-Alone Charger Support for Li-Ion or Li- 
Polymer

3.5-V to 28-V VCC Input Operating Range and 
Supports 1- to 6-Battery Cells (bq24610)