For the output capacitor, use of small ceramic capacitors placed as close as possible to the VOUT and GND pins of the IC is recommended. The recommended nominal output capacitor value is a single 22 µF. If, for any reason, the application requires the use of large capacitors which cannot be placed close to the IC, use a smaller ceramic capacitor in parallel to the large capacitor. The small capacitor must be placed as close as possible to the VOUT and GND pins of the IC.

It is important that the effective capacitance is given according to the recommended value in Section 6.3. In general, consider DC bias effects resulting in less effective capacitance. The choice of the output capacitance is mainly a tradeoff between size and transient behavior as higher capacitance reduces transient response overshoot and undershoot and increases transient response time. Possible output capacitors are listed in Table 8-3.

There is no upper limit for the output capacitance value.

At light load currents the output voltage ripple is dependent on the output capacitor value. Larger output capacitors reduce the output voltage ripple. The leakage current of the output capacitor adds to the overall quiescent current.