What implications need to be considered when changing the output capacitor (COUT) used with the TPS23756 from aluminum to ceramic?
In the Evaluation Module for TPS23756 (TPS23756EVM), the output capacitors are 220 µF.
In this case moving to something like the Samsung CL32A227MQVNNNE capacitor, you would have to evaluate the added risk of a 6.3 V rating down from 10 V, and the (approximate) price increase from 7 cents to 50 cents. What effect would the change in ESR have and how might this need to be accounted for?
How relevant are the considerations in these application notes?
Using TPS5410/20/30/31/50 With Aluminum/Ceramic Output Capacitors
Find, “Design Procedure for Ceramic Output Capacitors”
Ceramic Capacitors Replace Tantalum Capacitors in LDOs
For the sake of comparison, suppose our output capacitance was 33 µF. We could compare using an aluminum capacitor like the Panasonic EEE-1EA330WR to the ceramic capacitor TDK C3216JB1E336M160AC.
