Question1: If we are not going to use the buck-boost or the charge pump, what is the appropriate way to terminate the related pins? Do I still need to populate the passive components for these blocks even if I’m not using them? I don’t know if the charge pump for example performs any internal chip functions which require the passives to still be there.
Answer: Neither the charge pump nor the buck-boost perform any internal functions, so the related pins can be left floating. The only exception is the BBGND bump which should be still connected to GND. You must take care not to enable either converter.
Question2: For the bypass cap on the “CAP” pin (E4), the spec calls for 1uF, but the EVKIT implements a 4.7uF. Is there a specific reason for this?
Answer: Capacitances on the data sheet are listed as effective capacitance (after DC bias derating, for instance). The 4.7µF value was probably placed in this instance to account for the derating.