There is an optimized performance in this voltage regulator because it utilizes the Tray package. 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 6-pin voltage regulator dc to dc.
PQAE50-D48-S15-T Features
1 outputs
PQAE50-D48-S15-T Applications
There are a lot of CUI Inc PQAE50-D48-S15-T Voltage Regulators applications.