Dear,
I need to understand which is a detail procedure of BQ21061 at start-up on the BAT pin. In our application we do not drive the \CE pin of the BQ21061 therefore the BQ21061, when received power at Vin pin, starts immediately to charge battery (CHARGER_DISABLE=0). I need to understand if BQ21061 at the start-up tries to recharge battery with a limitation current of 2.5mA (pre-charge default current) after that it measures the battery voltage and if this is less (greater) than VLOWV (battery threshold for pre-charge to fast charge transition) it mantains the pre-charge (or it switches to fast charge default 10mA) current or, before to try to recharge battery it measures battery voltage and depending on the voltage at BAT pin (greater or lower respect VLOWv) it starts to recharge battey with 2.5mA or 10mA.
We have a Fuel Gauge connected on the BAT pin of the BQ21061 that at start-up sometimes doesn't starts (the internal regulator of the Fuel Gauge doesn't reach a correct regulation voltage) and the Fuel Gauge manufacturer tell us that the start-up current of this device is around 5mA with burst and they have some doubts that BQ21061 is not able to supply this current at power-up.
Thanks
Francesco