Replacing 10uF tantalum capacitors with X7R in ADM2587E circuit
No, you should not do this. The ESR is too low on the ceramic capacitors and may cause the ADP667ARZ regulator to go unstable, as can be confirmed by reading the datasheet.
If you want to replace them, you can use a ceramic capacitor with a small series resistor of similar ESR to the original tantalum capacitor the designer says you &quot;must&quot; use (probably in the 1-3\$\Omega\$ range).
Also note that ceramic capacitors often have a significantly lower than nameplate capacitance under bias (in extreme cases, they can lose 80% of their rated capacitance) so you must seek out the detailed data from the manufacturer and ensure you are getting something close to 10uF. You might have to use 22uF or more. The smallest (physical) size of capacitors run close to the rated voltage tend to be the worst, but do check the detailed data (often not on the datasheet).