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constant voltage regulator

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hiren.dave@bhuved.com

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hi,

i want very much constant voltage regulator. I will give it approx. 5v to it and i want exact 3.3V output without any mV change. Can i get this? any idea ? any IC? any company ?
 

LM1117T3.3 = 0.8A low dropout regulator
**broken link removed**

LM3940 =1A low dropout regulator
**broken link removed**

---------- Post added at 15:27 ---------- Previous post was at 15:24 ----------

KA378R33 = 3A low dropout regulator
http://www.shaoguang.com.cn/pdf3/KA378R33.pdf
 
There are three main factors that cause a change in the output of a practical voltage regulator: changes in input voltage, load current and temperature. How much it changes with these factors depends on the quality of the regulator design. Therefore, to estimate how tightly the ouput is regulated, we have to know how much these factors are expected to change.
 
thanks to all for helping me....

I want to give this voltage to microcontroller and accelerometer. these both device will load constant current. temperature will also be constant (around 30 degree). But my input voltage will be variable. max. change of input voltage will be 4.8 volt to 5.2 volt...

Friends i want a very constant voltage. if voltage is 3.2 or 3.4 instead of 3.3 than it's acceptable but once voltage is given it won't be altered.
 

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