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3V to 20V Boost for Low Current Application

Question asked by jram112 on Jan 10, 2013
Latest reply on Jan 11, 2013 by LucaV

I need to boost 3V to 20V (<1A) for use in a current source. I need a very small solution for my portable device. Most boost converters I find seem to not operate at at very low output currents.

 

The current source will be pulsed at 100-1000ms intervals with 1-2ms duration with amplitudes between 1-100 uA. My load is biological tissue and may range from 50-500 kOhms.

 

What would be the best way to generate <1mA at 20V?

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