Derating Calculation -
Open your current design. Calculate the actual power/voltage stress at your max operating temperature. If any component is running above 80% of its datasheet max, upgrade it now.
P_max = 1.0 × 0.538 = 0.538 Watts
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Have you ever designed a circuit that worked perfectly on the bench, only to fail catastrophically in the field? The culprit is often not a bad solder joint or a software bug, but heat . Open your current design