Datasheet

LM2677
SNVS077I –MAY 2004–REVISED JUNE 2012 www.ti.com
• V
FB
is the feedback voltage of typically 1.21V
A recommended value to use for R1 is 1K. In this example then R2 is determined to be:
R2 = 11.23KΩ
The closest standard 1% tolerance value to use is 11.3KΩ
This will set the nominal output voltage to 14.88V which is within 0.5% of the target value.
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