On Fri, 31 May 2002, Edson Brusque (listas) wrote:

>Hello Neil,
>
>> Ahhh... and therein lies the confusion.  Yes, I am
>> aware that one feature of these is that the Vin to
>> Vout differential is low.  Other than with a DC-to-DC
>> converter (large), someone mentioned that LDO's are
>> very efficient, so that led me to an implication
>> that they won't create the heat that the 7805 would.
>
>    I'm using the LM78S40 from National and I love it. It can work in book,
>boost and inverting configurations. Have an internal transistor to 1.5A peak
>and even a small diode and an opamp. If you need more current, you can use
>external diode and transistor.
>
>    It's in production for a long time and is widely used. Very cheap for a
>switching regulator.

And it comes in standard DIP too so no funny board assembly problems.

Peter

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