The architecture of the TPS62A01x-Q1 allows use of tiny ceramic-type output capacitors with low equivalent series resistance (ESR). These capacitors provide low output voltage ripple and are thus recommended. To keep the resistance up to high frequencies and to achieve narrow capacitance variation with temperature, TI recommends to use X7R dielectric.

The input capacitor is the low impedance energy source for the converter that helps provide stable operation. TI recommends a low-ESR multilayer ceramic capacitor for best filtering. For most applications, a 4.7-μF input capacitor is sufficient; a larger value reduces input voltage ripple.

A feedforward capacitor reduces the output ripple in PSM and improves the load transient response. A 33-pF capacitor is good for the 1.8-V output typical application. For the 3.3-V output typical application a 27-pF capacitor is recommended.