ViewSonic VSXXXXX service manual

Models: VSXXXXX

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U701 AP1117D33L and U704 AP1117E18LA: DC power convert, convert to 3.3v and 1.8v.

AP1117 is a low dropout positive adjustable or fixed-mode regulator with 1A output current capability. The product is specifically designed to provide well-regulated supply for low voltage IC applications such as high-speed bus termination and low current 3.3V logic supply. AP1117 is also well suited for other applications such as VGA cards. AP1117 is guaranteed to have lower than 1.4V dropout at full load current making it ideal to provide well-regulated outputs of 1.25 to 5.0 with 6.4V to 18V input supply.

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ViewSonic VSXXXXX service manual