Vin=5V, Vout=1.2V, SO-8 package
Any hints will be highly appreciated. I found a few parts in SO-8 satisfying all of the electrical requirements, but none of them is even close to be pin-compatible...
Thanks, /MM
Looking for a LT1765 pin-compatible buck regulator with Iout>=3.5A
Nov 06, 2008
2 Replies
ing
Is your actual load 3.5A or is that your calculated worst case peak current?
If it is the average, you are in big trouble. If it is the peak, there may be ideas to get the number below that value. without making big changes to the PCB. What sort of inductor are you using?
Well, the regulator is supplying core voltage for an FPGA. Since I'd posted the question I managed to drop the current to about 2.4A by changing the FPGA design . The heat problem still remains, but a quick experiment with adding a heatsink showed that this solution will work.
/MM
Is your actual load 3.5A or is that your calculated worst case peak current?
If it is the average, you are in big trouble. If it is the peak, there may be ideas to get the number below that value. without making big changes to the PCB. What sort of inductor are you using?
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