In order to package the IC voltage regulator, a D2PAK case is used. On the Voltage regulator IC, there are 5 terminations that can be connected. As you can see, the regulator IC has a total of 5 pins. The regulator has a total of 1 outputs to make sure that it delivers prompt, sufficient outputs. Depending on the chip, 5 pins may be available. As far as the regulator type, it is a FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR type. There is a RAIL way of packing the IC voltage regulators in the box.
CS5253B-8GDP5G Features
RAIL method of packing
CS5253B-8GDP5G Applications
There are a lot of ON Semiconductor CS5253B-8GDP5G Linear Voltage Regulators applications.