Up0104s Datasheet -

Song's chords F, A♯, D♯, Gm, C

Album Live and Up Close

Info about song

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Up0104s Datasheet

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Chord demo Am Chord demo C
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Up0104s Datasheet -

However, is publicly indexed in major databases (like Mouser, DigiKey, Alldatasheet) as of my latest knowledge. It is likely a proprietary part number (e.g., from a laptop motherboard or a specific OEM like Ricoh, Mitsumi, or an "UP" series controller).

Based on standard naming conventions for electronic components (specifically voltage regulators or similar ICs from brands like Sharp, Infineon, or Japanese vendors), the appears to be a DC-DC converter controller or a power management IC .