With a valid input source connected, the power-path management circuitry monitors the input voltage and current continuously. The current into IN is shared at PMID between charging the battery and powering the system load at PMID, SYS, and LS/LDO. If the sum of the charging and load currents exceeds the current that the VIN can support, the input DPM loop (VINDPM) reduces the current going into PMID through the input blocking FETs. This will cause a drop on the PMID voltage if the system demands more current. If PMID drops below the DPPM voltage threshold (V_DPPM), the charging current is reduced by the DPPM loop through the BATFET in order to stabilize PMID. If PMID continues to drop after BATFET charging current is reduced to zero, the part enters supplement mode when PMID falls below the supplement mode threshold. Battery termination is disabled while in DPPM mode. In order to charge the battery, the voltage at PMID has to be greater than V_BATREG + V_DPPM threshold.