The Great Search: Mini 5V Charge Pumps #TheGreatSearch #DigiKey #Adafruit @DigiKey @Adafruit
Sometimes you’ve got some 3.3v powered circuitry and you just need a li’l bit of 5V power for some LEDs or to level shift to 5V circuitry power. You could go with a boost converter, but usually you need a diode, inductor, maybe even a feedback resistor set. If you only need ~50mA you may be able to get away with a charge-pump. These low-current boosters are not as efficient as DC/DC style converters but they are very simple and cheap, only needing a capacitor or two to ‘double’ the input voltage and then regulate it down. (Video)
See other episodes of The Desk of Ladyada in the playlist here and other Great Searches in the playlist here.
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