This part is a kind of semiconductor called uP6103.

Function of this product has 5V/12V Synchronous-Rectified Buck Controller.

Manufacturers : uPI Semiconductor

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uP6103 5V/12V Synchronous-Rectified Buck Controller with Reference Input General Description The uP6103 is a compact synchronous-rectified buck controller specifically designed to operate from 5V or 12V supply voltage and to deliver high quality output voltage as low as 0.4V. These SOP-8 and PSOP-8 devices operate at fixed 200/300 kHz frequency and provide an optimal level of integration to reduce size and cost of the power supply. The uP6103 supports both tracking mode and stand-alone mode operation. The output voltage is tightly regulated to the external reference voltage from 0.4V to 3.0V at tracking mode or to internal 0.6V reference at stand-alone mode. This controller integrates internal MOSFET drivers that support 12V+12V bootstrapped voltage for high efficiency power conversion. Th [ ... ]

uP6103 PDF Datasheet Download