The Great Search: Boost converter OLED bias / FAN5331 replacement
October 4, 202210m 15s
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Show Notes
A few months ago, we were forced to find a replacement for the FAN5333 constant-current LED driver (https://blog.adafruit.com/2022/08/02/the-great-search-white-led-strand-backlight-constant-current-driver-fan5333-replacement-thegreatsearch-digikey-adafruit/). Well, now we have to find a replacement for its sister - the fixed voltage boost converter FAN5331 (https://www.digikey.com/short/bzrmmh08) which has gone "end of life" on us.
A real tragedy: we absolutely loved this simple SOT-23-5 chip which could take 3-5VDC in and give up to 20V out with a built in 1A switch, only a small inductor and diode needed! We use this for many of our OLED displays and other devices that need a bias voltage of 12-18VDC. Let's see if we can locate a pin-compatible, functionally-similar equivalent that's in stock.
See the chosen part on Digi-Key https://www.digikey.com/short/1zdcf8mf
Visit the Adafruit shop online - http://www.adafruit.com
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