I am designing a board using a Philips LPC2114 (nice chip). It uses
1.8v for the core, 3.3v for I/O, and I also need 5v for some other circuits on the board. None of them use much current. The power supply is a 12v battery.What is the best way to get these voltages, without running down the battery? Is there a single device, such as a DC/DC converter that can produce these voltages?