Is this possible?
 

Is this is possible?

I just had a client request a +1V supply (a switcher) that SINKS
200mA.

I only have +5V available :-(

...Jim Thompson
--
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I love to cook with wine. Sometimes I even put it in the food.

Is this possible?
 

Jim Thompson wrote:

Is this is possible?

I just had a client request a +1V supply (a switcher) that SINKS
200mA.

I only have +5V available :-(

...Jim Thompson
You didn't specify what the 1 volt is, input? output? etc..
but here is something
http://www.analog.com/static/importe..._2106_2107.pdf

that will output starting at .8 volts but needs supply voltage of
2.7.. 5.5v

Is this possible?
 

In article ,
Jim Thompson writes:
Is this is possible?

I just had a client request a +1V supply (a switcher) that SINKS
200mA.

Modern DRAMs often need termination. Since they have a lot of signals,
it's less power overall if you terminate to the target voltage and that
requires a regulator that can sink as well as source.

There should be lots of data sheets out there.

I assume you don't need to make a switcher that can pump the power back
up to 5V rather than just turn it into heat.

--
These are my opinions, not necessarily my employer's. I hate spam.

Is this possible?
 

Jim Thompson wrote:
Is this is possible?

I just had a client request a +1V supply (a switcher) that SINKS
200mA.

I only have +5V available :-(

...Jim Thompson
Simple. Any 1V suply chip, and just load it with 5 ohm, so it can
sink 200ma and source (Ispecified-200ma).

Is this possible?
 

Jim Thompson wrote:
Is this is possible?

I just had a client request a +1V supply (a switcher) that SINKS
200mA.

I only have +5V available :-(

...Jim Thompson

Wierd. A CC 200mA load across the supply? Maybe switched
in or out depending on whether the +1 supply is on or off?

Please post how you solve it, if the NDA allows. Inquiring
minds want to know! :-)

Ed