The bq24735 device is a high-efficiency, synchronous battery charger, offering low
component count for space-constrained, multichemistry battery charging applications. The bq24735
device supports turbo boost by allowing battery discharge energy to the system when system power
demand is temporarily higher than the adapter maximum power level so the adapter will not
The bq24735 device uses two charge pumps to separately drive N-channel MOSFETs (ACFET,
RBFET, and BATFET) for automatic system power source selection.
SMBus controlled input current, charge current, and charge voltage digital-to-analog
converters (DACs) allow for very high-regulation accuracies that can be easily programmed by the
system power management microcontroller.
The bq24735 device uses an internal input current register or an external ILIM pin to
throttle down PWM modulation to reduce the charge current. The bq24735 device charges 1-, 2-, 3-,
or 4-series Li+ cells.
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