The architecture of the TPS62A04xB 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 resistance up to high frequencies and to achieve narrow capacitance variation with temperature, TI recommends to use X7R or X5R dielectric.

The input capacitor is the low impedance energy source for the converter that helps with stable operation. A low-ESR, multilayer ceramic capacitor provides best filtering. For most applications, a 10μF input capacitor is sufficient; larger capacitance reduces input voltage ripple.

The recommended typical output capacitor value for 1.2V output typical application is 45μF of effective capacitance. This capacitance can vary over a wide range, as outlined in Table 8-3.