This is probably more of a general question than specifically to the BQ24040. I have the BQ24040 designed into a new design together with a LM3671 regulator. The BQ24040 has a 1uF on the output pin and that net is connected to the battery as well as the input of the LM3671 which also has a 4.7uF input capacitor.
I've seen several designs that place a bulk capacitor as well as a bypass capacitor (say 10uF and 0.1uF) on the connector for the battery. I haven't been able to find an app note which discusses when you would want to use these. My board is only ~1sq. in. so space is at a premium. Most of the reference designs I've seen from TI have a capacitor in the schematic but they all are listed as not populated. I could see where having them is not going to hurt but when you're pressed for space and cost I'd like to know when these would be useful or required.
Thanks,
George
