The inductor and the output capacitor together provide a low-pass filter. To simplify the selection process, Table 9-3 outlines possible inductor and capacitor value combinations for most applications.
Table 9-3 Output Capacitor / Inductor CombinationsNOMINAL L [µH](2) | NOMINAL COUT [µF](3) |
---|
10 | 22 | 47 | 100 | 150 |
---|
0.47 | | | | | |
1 | | +(1) | + | + | + |
2.2 | | | | | |
(1) Typical application configuration. Other '+' mark indicates recommended filter combinations. Other values may be acceptable in applications but should be fully tested by the user. Refer to the application note
SLVA710. (2) Inductor tolerance and current de-rating is anticipated. The effective
inductance can vary by +20% and -30%. The required effective inductance is
500-nH minimum.
(3) Capacitance tolerance and bias voltage de-rating is anticipated. The effective capacitance can vary by 20% and -50%.