Padu wrote:

>>>I just received 4 voltage regulators for my application and they are
>>>not
>>>behaving as I was expecting.
>>>      
>>>
>>If you don't do the following you may as well stay in bed.
>>
>>- Connect the part correctly.
>>
>>- Read the spec sheet and do whatever it says you need to do.
>>
>>In your case you are probably violating the second rule. If you don't
>>obtain and read a spec sheet for an electronic device that MAY
>>malfunction then you have no reason to be surprised if it DOES
>>malfunction.
>>
>>Get spec sheet.
>>Read spec sheet.
>>Apply spec sheet.
>>Tell us what happens.
>>    
>>
>
>As I told before, I had read the spec sheet, and I can send it out to you if
>you want. But staying in bed is not a bad choice at all :-)
>  
>

I just downloaded that datasheet and it's almost useless!
Add a 100n ceramic and a 47u electrolytic capacitor to the output
and another 100n on the input if the reg is more than about 25mm
from the main filter capacitor. That should get you started. :-)
Also Maybe check out the datasheet for the good old National
LM2940 LDO and use the hints and values they give there.
David...

-- 
___________________________________________
David Duffy        Audio Visual Devices P/L
U8, 9-11 Trade St, Cleveland 4163 Australia
Ph: +61 7 38210362      Fax: +61 7 38210281
Our Web Site: www.audiovisualdevices.com.au
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