LDO regulator and capacitors

Thread Starter

ArchillesElbow

Joined May 2, 2012
26
Hi,

If I am using a lithium polymer (lipoly) batter (4.2 - 3.7ish volts) as my source...into a module that needs 3.3v do I need to use a capacitor on the output side of my ldo if I am using a Mcp1701 (3.3v) low voltage regulator, or can I do without it? I need a stable 3.3v with around 250mah...

Thanks!
 

Thread Starter

ArchillesElbow

Joined May 2, 2012
26
I tried it anyway on a test circuit...the current fluctuates between 1.6 and 2.2 volts.. The output should be 3.3.. So I guess I need to put in a capacitor...
 

atferrari

Joined Jan 6, 2004
3,911
Questions like the one in the OP usually come from not reading the respective datasheet.

RTFM should be compulsory by law. Lot of posts would not see the light.
 
Top