SNVSB79B November 2018 – May 2020 LM25180
Refer to the PDF data sheet for device specific package drawings
The input capacitor, CIN, filters the primary-side triangular current waveform. To prevent large ripple voltage, use a low-ESR ceramic input capacitor sized according to Equation 24 for the RMS ripple current given by Equation 25. In this design example, choose a 10-µF, 50-V ceramic input capacitor with X7R dielectric and 1210 footprint.