The ADUM4070ARIZ is a regulated DC to DC isolated Power Supply Controller with an internal MOSFET driver. The DC-to-DC controller has internal isolated PWM feedback from the secondary side based on the iCoupler? chip scale transformer technology and complete loop compensation. This architecture eliminates the need to use an opto-coupler for feedback and compensates the loop for stability. The ADuM4070 isolator provides a more stable output voltage and higher efficiency compared to unregulated isolated DC-to-DC power supplies. The regulated feedback provides a relatively flat efficiency curve over the full output power range. The ADuM4070 enables a DC-to-DC converter with a 3.3 to 24V isolated output voltage range from either a 5 or a 3.3V input voltage, with an output power of up to 2.5W.