Hi,
I'm working with a MCU and am interfacing with a chip that wants 3.3-4v VCC when my only power source is 5v. Initially I thought I could use a resistor ratio setup to drop 5v to 3.3v and it worked, but as soon as there's a load the voltage drops too low (which I guess should have been obvious). I also tried using a Mosfet setup, as well as PWM with the same results. I know that a regulator would do the trick, but I've already made two parts orders with this particular project and was wondering if there's a way to build a stable 3.3v "regulator" with common components like transistors, caps, resistors, etc. (This 3.3v source would only be required for one chip.)
Yes? No?
I'm working with a MCU and am interfacing with a chip that wants 3.3-4v VCC when my only power source is 5v. Initially I thought I could use a resistor ratio setup to drop 5v to 3.3v and it worked, but as soon as there's a load the voltage drops too low (which I guess should have been obvious). I also tried using a Mosfet setup, as well as PWM with the same results. I know that a regulator would do the trick, but I've already made two parts orders with this particular project and was wondering if there's a way to build a stable 3.3v "regulator" with common components like transistors, caps, resistors, etc. (This 3.3v source would only be required for one chip.)
Yes? No?