Thread: 1.5Volt supply
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Old 29th Apr 2019, 12:10 pm   #5
Herald1360's Avatar
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 14,658
Default Re: 1.5Volt supply

Presumably the current draw issue is as relevant to the USB source capability as the LM317? Without a heatsink, a TO220 317 should be OK for about 300mA for 5V in and 1.5V out.

Edit: Looking at the likely module, it should be OK for about an amp with the 3.5V I/O differential. I would think for 1.5A it would need the I/O differential kept very close to the 317 dropout value!
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Last edited by Herald1360; 29th Apr 2019 at 12:19 pm.
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