The inductor and output capacitor together provide a low-pass filter. To simplify this process, Table 3 outlines possible inductor and capacitor value combinations.
Table 3. Recommended LC Output Filter Combinations
|INDUCTOR VALUE [µH](2)
||OUTPUT CAPACITOR VALUE [µF](1)
(1) Capacitance tolerance and bias voltage de-rating is anticipated. The effective capacitance varies by +20% and –50%.
(2) Inductor tolerance and current de-rating is anticipated. The effective inductance can vary by 20% and -20%.
(3) Typical application configuration. Other check marks indicate alternative filter combinations.