In this case, DC DC switching regulator has 2 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 5-pin voltage regulator dc to dc.
DU1P0-05D15N Features
2 outputs
DU1P0-05D15N Applications
There are a lot of Astrodyne TDI DU1P0-05D15N Voltage Regulators applications.