On the regulater IC chip, there are a total of 4 terminations. In order to deliver prompt, sufficient and reliable performance, this regulator IC has 1 outputs in total. There are 4 pins on the chip. An example of such a component would be this Other Regulators component. As you can see from the picture, the regulator IC is packed in a certain way. As a result, this IC regulator will typically output 3.3V volts as a system.
LP5990TM-3.3 Features
Other Regulators subtageroy TAPE AND REEL method of packing
LP5990TM-3.3 Applications
There are a lot of Texas Instruments LP5990TM-3.3 Linear Voltage Regulators applications.