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BQ25125: charger behavior when input power is limited

Part Number: BQ25125

Hi,

If my 5V input source can only source up to 200mA (i.e. 1W wireless receiver) but my BQ25125 charger setting is 300mA and the battery is currently at 3V (Battery regulation voltage is set to 4.2).

How will the system behave assuming 1) no system load and 2) with 100mA load?

Will my input supply voltage be loaded down until the charge current eventually goes to termination charge?  Please elaborate.

-Kelvin