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How to create 3.3vdc, max 50mA voltage source from 5vdc?

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semetu

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How can create this voltage source (3.3vdc, max 50mA) from 5vdc
 

3.3VDC

Linear regulator or DCDC converter
 

3.3VDC

There are several answears, two of them:
LM3670-3.3 switching regulator efficiency 90%
LM3490 Linear regulator efficiency 60%
Get into the national web:

**broken link removed**
 

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