The bq25708 is a synchronous NVDC battery buck-boost charge controller, offering low
component count, high efficiency solution for space-constraint, multi-chemistry battery charging
The NVDC-1 configuration allows the system to be regulated at battery voltage, but not
drop below system minimum voltage. The system keeps operating even when the battery is completely
discharged or removed. When load power exceeds input source rating, the battery goes into
supplement mode and prevents the system from crashing.
The bq25708 charges battery from a wide range of input sources including USB adapter,
high voltage USB PD sources and traditional adapters.
During power up, the charger sets converter to buck, boost or buck-boost configuration
based on input source and battery conditions. The charger automatically transits among buck, boost
and buck-boost configuration without host control.
The bq25708 monitors adapter current, battery current and system power. The flexibly
programmed PROCHOT output goes directly to CPU for throttle back when
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