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The Arduno UNO SMD R2 uses an MCP33269 not an LM1117. What you have is probably some cheap Chinese clone of the Arduino, and in that case the regulator will be the cheapest Chinese copy of the LM1117 available. It's impossible to tell what the specs of that specific chip are. Suffice it to say, though, that the specs of the chip are pretty much irrelevant ...


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