The bq24707 and bq24707A devices are
high-efficiency, synchronous battery chargers, offering low component count for space-constrained,
multi-chemistry battery charging applications.
SMBus controlled input current, charge current, and charge voltage DACs allow for very
high regulation accuracies that can be easily programmed by the system power management
The IC uses the internal input current register or external ILIM pin to throttle down PWM
modulation to reduce the charge current.
The IC provides an IFAULT output to alarm if any MOSFET fault or
input over current occurs. This alarm output allows users to turn off input power selectors when
the fault occurs. Meanwhile, an independent comparator with internal reference is available to
monitor input current, output current, or output voltage.
The IC charges one-, two-, three-, or four-series Li+ cells, and is available in a
20-pin, 3.5 × 3.5 mm QFN package.