Hello, I’d like to drop 9-12V to 6.25-6.5V. I see there is Pololu - 2.5-7.5V Adjustable Step-down Voltage Regulator D36V6ALV that has a pot adjuster. I’d like fixed output if possible though. Can you recommend a replacement resistor value for something like Pololu - 6V, 600mA Step-Down Voltage Regulator D36V6F6 to get the output in the range 6.25-6.5? Many thanks!
You can increase the voltage of the D36V6F6 regulator by replacing one or two of the resistors on it: R1 and R2:
The 6V D36V6F6 regulator uses R1 = 91kΩ and R2 = 13.3kΩ and the equation for the relationship to the output voltage is:
So, for example increasing R1 to 100kΩ would give you slightly higher than 6.5V.