There is an optimized performance in this voltage regulator because it utilizes the Bulk package. 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.
AM2D-2415DH52Z Features
2 outputs
AM2D-2415DH52Z Applications
There are a lot of Aimtec AM2D-2415DH52Z Voltage Regulators applications.