I have built a 3.7 - 5V boost circuit using the LM2577-ADJ Step-Up voltage regulator.
I have followed the datasheet (p2) and have calculated Vout as follows:
Vout = 1.23(1+R1/R2)
with values chose for R1 & R2 as:
Vout = 5.05V =1.23(1+5600/1800)
However I have constructed this circuit and with an input voltage of 3.84V (provided by a single cell LiPo) I have an output voltage of 3.56V
Below is a picture of my board layout:
Any help on this would be great, i've checked all the connections for shorts/blown components and I am a little bit stuck.