Hello~ Dialog Support Team,
I am designing with two documents for the DA14531. One is DATASHEET(Revision 2.1 / 17-Oct-2019) and the other is User Manual(UM-B-114 / Revision 1.1 / 25-Oct-2019). However, I found a difference information between two documents.
[Datasheet 30page/352page] Figure 6. Lithium Coil Cell Powered System Diagram (BUCK configuration)
C1 : 10uF, C2 : 1uF
[User manual 13page/80page] Figure 6. DA14531 PRO-DB Power Selection
C1 : input capacitor for buck mode and output capacitor for boost mode. As input capacitor this must be equal to 2.2 µF. As an output capacitor, the effective capacitance must be at least 1 μF.
C2 : for the PRO-daughterboard, this capacitor is set to 10 μF.
I wonder which information is correct.