Hi, Thank you for all the help you've been providing, here I go again with another Electrical question: I am designing a PCB and I need a voltage regulator similar to this: http://img191.imageshack.us/img191/6499/n7p3.png [Broken] but I dont want to use the LM7805 and the LM7905. I am trying to make this as small as possible, hopefully with all components being Surface mounted. I was thinking of using a PMIC, non linear voltage regulator. However I am trying to read the datasheet of the PMIC components and I dont really understand it, (example: http://www.semtech.com/images/datasheet/sc418.pdf) This datasheet shows a diagram with an Inductor (L1). does that mean that the chip itself has an inductor inside, or does that mean that I have to connect an inductor to that pin? I am not sure if this is the best way to approach this problem but I was wondering if anyone here can help me. Thank you!