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Altera_Forum's avatar
Altera_Forum
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16 years ago

Voltage Regulators for Cyclone III

Hi. I want to use a LM317 regulator to feed my EP3C16Q240C8. The problem is that the minimum voltage the regulator is able to output is 1.25 V while the core voltage for the FPGA is 1.2 V. Is this s...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

I've seen many designs, that used a 1.25V regulator for 1.2V. But by specification, it doesn't guarantee to keep the Cyclone III voltage range. If you expect additional 50 mV voltage drop at filter chokes or PCB traces, it would be just O.K.