Reducing 3.4V to 3.3V with simple logic

[muthukumar_ece2004]

Hi,
How to reduce the 3.4V supply voltage to 3.3V with a very simple logic?

 

[alexan_e]

What do you mean with a simple logic?
It depends on the load requirements, if these are known and constant you may be able to do it with a resistor like when using a led.
If you have a high impedance load then you can use a voltage divider etc.
What kind of load do you have?

Alex

 

[mishrashashi]

Agree with alexan_e

You can also use a Zener diode of 3.3V rating along with a series resistor. Apply Ohm's law(V=IR) to calculate the resistance value for known current.

R = (Vout-Vin)/ I ohm.
It is preferable to choose lower value of resistance.

 

[muthukumar_ece2004]

Yes, i need to drive a controller IC. I think, zener diode is the only way to reduce DC voltage. Voltage divider could not be used since it need to drive a controller.
Otherwise we have to improve the regulator. If other than any idea is there, plz share it!

 

[alexan_e]

You still haven't specified your load.
Unless you provide some specific model so we check the datasheet I don't think it is possible to give solution.
What kind of controller is that and why do you say "Otherwise we have to improve the regulator", if there is already a regulator and which model?
Is it a 3.3v regulator that outputs 3.4 instead, can it be replaced?
Why do you want to change the output instead of replacing the regulator?

Alex

 

[zuisti]

3.3v + 5% is equal to 3.465v so feel free to use 3.4 volt (at my opinion).