# Low Drop Out 3.3V Regulator

**URL:** <https://community.sparkfun.com/t/low-drop-out-3-3v-regulator/23969>\
**Category:** New Product Ideas\
**Created:** [April 19, 2012, 10:49pm UTC](https://community.sparkfun.com/t/low-drop-out-3-3v-regulator/23969 "2012-04-19T22:49:32Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![trialex](https://avatars.discourse-cdn.com/v4/letter/t/ea666f/32.png) [@trialex](https://community.sparkfun.com/u/trialex)\
**Post date:** [April 19, 2012, 10:49pm UTC](https://community.sparkfun.com/t/low-drop-out-3-3v-regulator/23969/1 "2012-04-19T22:49:32Z")

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Maybe I’m missing this in your catalogue somewhere, but it’d be great if you sold 3.3V regulators. They should be suitable for use with your LiPo batteries, so a low drop out would be essential. You have a 3.3V regulator (LD1117V33 [http://www.sparkfun.com/products/526](http://www.sparkfun.com/products/526)), but it’s dropout voltage is over 1V - too high for LiPo’s

You use these regulators in your products (e.g. 3.3V arduino pro mini [http://www.sparkfun.com/datasheets/DevT … 28-v11.pdf](http://www.sparkfun.com/datasheets/DevTools/Arduino/Arduino-Pro-Mini_328-v11.pdf) etc.), so it’d be great to be able to use them ourselves.

You seem to use the MIC5205 - looks good for basic projects - 150mA limit load, 350mV drop out voltage. If you do the assembly of boards using this part in house, then you could just order some extras and sell them individually.

Another choice would be the ADP3338 ([http://www.analog.com/en/power-manageme … oduct.html](http://www.analog.com/en/power-management/linear-regulators/adp3338/products/product.html)).

Sure they are pretty much all going to be SMD, but SOT223’s and SOT-23-5’s aren’t too hard to work with - SOT-223 will even fit on the tracks of a 0.1" strip board if you are careful with placement.