This is one of the semiconductor types. This part name is KIS-3R33S.
This product has DC-DC power module functions.
Manufacturers of product is ETC.
Image and pinout :
KIS-3R33S PDF Datasheet
Some of the text files within the PDF file
KIS-3R33S DC-DC u5n•j!WW Q…•è MP2307DN h9cnNåN•De™SïPZb 0.1-18V SïŒ v„šØeHSïŒ_Qsu5 n•0 [žribÍdDVþÿO›O`SÂ€ÿ Oîe9e¹lÕY‚Nÿ Free Datasheet http://www.datasheetlist.com/ Free Datasheet http://www.datasheetlist.com/ [ … ]
Please refer to the file for details.