I am working on a circuit design that has multiple IC's on it. My MCU requires 2.5-3.3 VDC for it's power. Another IC that I am using requires 5V for it's logic power. So what is the cheapest and simplest solution for powering both of these devices. I figure my options are:
A) Use two voltage regulators a 3.3 and a 5V. B) Use just a 5V regulator and used diodes or something to drop the voltage down the an acceptable level for the PIC. C) Maybe there is a dual voltage regulator out there? D) Something else?