The system voltage is regulated slightly above the batteryvoltage by the power path management circuit and is keptabove the programmable minimum system voltage (3.5V bydefault). Therefore, system power is maintained even if thebattery is completely depleted or removed. Dynamic powermanagement (DPM) feature is also included thatautomatically reduces the charge current if the input currentor voltage limit is reached. If the system load continues toincrease after reduction of charge current down to zero, thepower path management provides the deficit from battery bydischarging battery to the system until the system powerdemand is fulfilled. This is called supplement mode andprevents input source overloading