Although the noise-reduction (C_{NR_SS}) capacitor is not needed to achieve stability, TI highly recommends using a 100-nF noise-reduction capacitor to minimize noise and maximize AC performance. The noise-reduction capacitor is especially important at low currents as shown in Figure 6-22.

It is generally recommended to not use a feed-forward capacitor. While a feed-forward capacitor can provide some improvements in PSRR at certain frequencies, it also has additional risks. See Pros and Cons of Using a Feed-Forward Capacitor with a Low Dropout Regulator for additional information.

Figure 8-1 shows the different PSRR performance of the device with and without a feed-forward capacitor with V_IN = –13 V, V_OUT = –12 V, I_OUT = 1 A, C_{NR_SS} = 100 nF, and C_OUT = 50 μF.