[quote user="Gergely Bacso"]I want to connect a 15mA current sink to the GPIO of the MCU.[/quote] Not all "wants" are legitimate! Should not you "govern" your wants to the needs/requirements of the MCU? As poster Robert states - using the MCU as a, "Beast of Burden" is never recommended. Use of a component more suited (and sacrificial) to your power demands is very sound.
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