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tlfong01
tlfong01
4:27 AM
@user28910 Yes, I fully agree. It is not just marginal, but out of margin.
@OYPS Some more references you might find useful:
(1) What's the voltage used to power LEDs inside an LED light bulb?
https://electronics.stackexchange.com/questions/543982/whats-the-voltage-used-to-power-leds-inside-an-led-light-bulb/544040#544040
(2) Control a 3W RGB LED with an Arduino
https://electronics.stackexchange.com/questions/543244/control-a-3w-rgb-led-with-an-arduino/543466#543466
(3) Constant current source for resistance measurement
https://electronics.stackexchange.com/questions/545896/constant-current-source-for-resistance-measurement
(4) Constant Current Source Learning Notes V0.1 - tlfong01 2021feb02
https://penzu.com/public/bda5986a/
 
 
6 hours later…
OYPS
OYPS
10:56 AM
@tlfong01 thanks for the links. I did not read all of them yet, but they were already pretty useful. After getting all the answers to my question i was able to filter the existing MOSFETs much more precise. Especially in regards of Rdson. Is an Rdson of 250Ohm@2.5V suitable for my application. I was not able find one at 2.7 or 3.3V.
For example this one from Infineon: mouser.de/datasheet/2/196/…
 
OYPS
OYPS
11:15 AM
250mOhm@2.5V of course.
 

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