In this case, DC DC switching regulator has 1 outputs configured to it. DC DC switching regulators like this one generate Fixed outputs on their output pins to handle the power management. It has a 10-pin voltage regulator dc to dc.
LSN-3.3/16-W3-C Features
1 outputs
LSN-3.3/16-W3-C Applications
There are a lot of Murata Power Solutions LSN-3.3/16-W3-C Voltage Regulators applications.