Re: Pin layout for a voltage regulator

On Fri, 12 Sep 2008, ian field wrote:

> 
"the dip****" <sgonedes@[EMAIL PROTECTED]
> wrote in message
> news:868wtx3mc1.fsf@[EMAIL PROTECTED]
>>
>>
>> Hello, I am wondering if anyone knows the pin layout for a l7812acv
cc077
>> v6
>> march 819 and a l7912acv gk243 vw chn 734. The products where purchased
>> via
>> newark.com from ST electronics. I checked the datasheets and the three
>> that
>> I have read all provide different pin layouts. I like to be sure that I
>> get
>> the pins right before I start pulling from the transformer - it's just
a
>> minor issue but the koreans TL431 datasheet is much different than the
>> ones
>> that are available to US citizens.
>
> As others have pointed out the 78xx and 79xx regulators have different
> pinout also the TL431 is an adjustable zener not a voltage regulator.
>
I missed the bit about the TL431.  If he thought all three ICs
were equivalent, no wonder he was puzzled about why the pinouts
were different on each datasheet.

    Michael