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Dwayne Reid wrote:
> Good day to all.
> 
> I recently purchased a LED flashlight that runs from a single 1.5V 
> "AA" cell.  Upon disassembling it, I see a total of 3 electronic 
> components: the LED, a 10uH axial inductor and a 3-legged to-92 
> device labelled "TX2115".
> 
> I haven't yet tried to measure output current or efficiency but hope 
> to do so soon.
> 
> My Google search for "tx2115" turns up only one close hit: a Chinese 
> site showing that part number and describing it as a Boost LED 
> driver.  But: the picture is for a 4-legged to-92 device, not 3-legged.
> 
> Anyone have any idea where I might find a datasheet for this device 
> and, better yet, where to purchase them from?
> 
> Thanks!
> 
> dwayne
> 

It might be a transistor instead. See
http://www.emanator.demon.co.uk/bigclive/joule.htm


- --
Brendan Gillatt | GPG Key: 0xBF6A0D94
brendan {a} brendangillatt (dot) co (dot) uk
http://www.brendangillatt.co.uk
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