Electronics > Beginners
5V regulator outputting 5.9V and more.
wraper:
If you look at max ESR value, It's probably best to use MLCC or LOW ESR tantalum. Keep in mind that if you choose electrolytic, ESR most likely will be above mentioned 0.4 Ohm for 10-22 uF capacitors even if they are LOW ESR type.
Simon:
what abut my existing 330nF with an electrolytic?
james_s:
It's a common technique to pair an electrolytic with a ceramic capacitor, not as necessary as it used to be but it will still work.
Simon:
Just remembered, i have some nice 150µF polymer capacitors at work.
floobydust:
LM2931 is an old 1st gen LDO, finicky about the output capacitance (value and ESR) and I would use something else. Ensuring it stays stable over temperature can be a challenge when including the O/P capacitor's behaviour. 150uF solid polymer may be outside the stable range for ESR at room temp. alone.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version