BQ24765,pdf(SMBus-Controlled M

The bq24765 is a high-efficiency, synchronous battery charger with two integrated 30mΩ NMOS power MOSFETs, and an integrated input current comparator, offering low component count for space-constraint, multi-chemistry battery charging applications. Input current, charge current, and charge voltage DACs allow for very high regulation accuracies that can be easily programmed by the system power management micro-controller using SMBus. The bq24765 has switching frequency of 700kHz. The bq24765 charges 2, 3, or 4 series Li+ cells, and is available in a 34-pin, 3.5mmx7mm QFN package.

The bq24765 features Dynamic Power Management (DPM) and input power limiting. These features reduce battery charge current when the input power limit is reached to avoid overloading the AC adaptor when supplying the load and the battery charger simultaneously.