> Hi.
> Just come across some linear voltage regulators
> from ST Microelectronics called VB408 and VB409.
> They have a high input voltage range (400 and 580V),
> so they can be connected directly to rectified 110
> or 220 V mains. They deliver a max of 40 or 80mA, so
> could easily feed a simple PIC circuit.

> http://us.st.com/stonline/books/pdf/docs/6421.pdf
> http://us.st.com/stonline/books/pdf/docs/6941.pdf

> The VB408 is $0.84 is single quantity at Mouser.

> (23.90 SEK from Farnell in Sweden, or aprox $2.90 !)


> Now, anyone looked at these ? Or any similar mains
> connected volt regulator ? Could be an alternative
> to the usual "cap-voltage-divider" used in low power
> mains connected microcontroller circuits maybe ?

> Jan-Erik.

Check the LNK500 at www.powerint.com
This is a three terminal switching regulator which is intended to replace
"wall wart" (linear transformer) type power supplies. Using an external
switching transformer, it can provide up to 3 watts of output with less than
300 milliwatt power consumption no load with 265 VAC input. "Meets
Blue Angel, Energy Star, and EC requirements". Efficiency to 75%.
8 pin dip or SMT.

John Power

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