Accidentally ordered LNK302 IC SWITCH any practical use?

[pappasmurfsharem]

I have no idea how this got in my cart. I wouldn't have been looking at anything similar.

I'm going to chock it up as a $1.30 wasted and throw it out, unless you guys know of something that can be done with it.

LNK302GN LNK302 IC SWITCH OFF-LINE MDCM/CCM

I'm still a little confused how it got there, hopefully it didn't replace something I actually needed, because I can't for the life of me think of what is missing from my last order.

[garcho]

here's a DIYSB search for buck converters

[Tony Forestiere]

Not to derail, BUT. Thanks Gary!!! I just learned that I can type a search keyword into Google followed by " site:diystompboxes(dot)com" and get a better indexed result!!!
This is KILLER!!!

[PRR]

It could be an incredibly clever (4 pins??!) way to get a watt of low-voltage DC inside a hi-volt tube amp, for things like LFO and reverb or interface logic.

http://www.mouser.com/ds/2/328/lnk302_304-306-179954.pdf

It is far from ready-to-run, you need several caps, a coil, and special diodes, and some math.

[pappasmurfsharem]

It doesn't sound like anything I have a need for.

Anyone want it?

http://www.taydaelectronics.com/lnk302gn-lnk302-ic-switch-off-line-mdcm-ccm.html

[Seljer]

You could also is it to make negative voltage from a postive voltage (refer to "High-Side Buck Boost – Direct Feedback" in the datasheet), i.e. to get a bipolar power supply from +9V or to run pnp transistor fuzz pedals

[pappasmurfsharem]

You could also is it to make negative voltage from a postive voltage (refer to "High-Side Buck Boost – Direct Feedback" in the datasheet), i.e. to get a bipolar power supply from +9V or to run pnp transistor fuzz pedals

Hmm that might be convenient. Would that enable it to run on a daisy chained supply with normal pedals?

[PRR]

> get a bipolar power supply from +9V

The specs seem to say it needs HIGH voltage input: "..check that the minimum DC input voltage does not fall below 70 VDC at maximum load, minimum input voltage."

It isn't clear why it needs THAT much, but I can see why it mightn't like 9V.