JAJSM34F December 2012 – May 2021 LM25017
PRODUCTION DATA
Equation 21 is used to calculate the value of RON required to achieve the desired switching frequency.
Where K = 9 × 10–11For VOUT1 of 5 V and fSW of 500 kHz, the calculated value of RON is 111 kΩ. A standard value of 124 kΩ is selected for this design to allow for second order effects at high switching frequency that are not included in Equation 21.