This part is a kind of semiconductor called APW7313.
Function of this product has 3A 24V 340kHz synchronous Buck Converter.
Manufacturers : ANPEC
Image and pinout :

Some of the text within the PDF file :
APW7313 3A 24V 340kHz synchronous Buck Converter Features • • • • • • • • • • • • • • Wide Input Voltage from 4.5V to 24V 3A Continuous Output Current Adjustable Output Voltage from 0.925V to 20V Intergrated High/Low Side MOSFET PFM/PWM mode Operation Fixed 340kHz Switching Frequency Stable with Low ESR Ceramic Output Capacitors Power-On-Reset Detection Programmable Soft-Start Over-Temperature Protection Current-Limit Protection with Frequency Foldback Enable/Shutdown Function Small SOP-8P Package Lead Free and Green Devices Available (RoHS Compliant) General Description APW7313 is a 3A synchronous buck converter with integrated 110mΩ power MOSFETs. The APW7313 design with a current-mode control scheme, can convert wide input voltage of 4.5V to 24V to the ou [ ... ]
APW7313 PDF Datasheet Download
