When the AC adapter is disconnected, the battery pack powers the system load with minimum power dissipation. Consequently, the time that the system runs on the battery pack can be maximized.
It reduces the number of external path selection components and offers a low-cost solution.
Dynamic power management (DPM) can be achieved. The total of the charge current and the system current can be limited to a desired value by setting the charge current value. When the system current increases, the charge current drops by the same amount. As a result, no potential over-current or over-heating issues are caused by excessive system load demand.
The total input current can be limited to a desired value by setting the input current limit value. USB specifications can be met easily.
The supply voltage variation range for the system can be minimized.
The input current soft-start can be achieved by the generic soft-start feature of the IC.