members
The math on this is a bit too much for me. I would like to know if the +5V output on the MC33269 would be stable?
Thanks in advance
fnb111:
membersThe math on this is a bit too much for me. I would like to know if the +5V output on the MC33269 would be stable?
Thanks in advance
I don't see any maths involved in answering your question. What maths do you need help with?
Circuit looks fine to me.
The issue is stability, the only maths I can see is the recommendations for the input and output caps.
Input cap is optional, and can be much smaller as it only improves high frequency behaviour. The output cap
must have ESR between 0.2 and 10 ohms for stability. So that 100nF ceramic should probably be removed
from the output of the regulator, and perhaps placed close to a load so the pcb trace inductance isolates it from the regulators output.
Ceramic caps can have very low ESR if the MLCC type. Standard electrolytics are likely to be OK here.
Test the configuration on a breadboard if you can and check for stability both loaded and unloaded?
PerryBebbington:
I don't see any maths involved in answering your question. What maths do you need help with?Circuit looks fine to me.
Thanks for the help. I appreciate it.
The load regulation on the MCC (Vin = Vout + 3.0 V, Iout = 10 mA to 800 mA,)