Looking for boost circuit for 3v cr123a

[perfconnpc]

I'm looking to upgrade a light that currently runs a Cree P4 in direct drive using a single cr123a. It's incredibly bright using a rcr123a at 1.2amps but only draws 100ma when using primary 3v cells. I'd like a boost circuit that boosts the 3v primary to 3.6-4.0v and anywhere from 500 to 900 ma.

I've searched Google, DX, and the CPF forums but haven't come up with anything. I'm not a big fan of multi-modes but would consider it if it was the only thing I could find.

Any suggestions?

Oh, and the board needs to be 16mm diameter or less.


Thanks in advance,
Joel

 

[sysadmn]

Here's one source:
http://theledguy.chainreactionweb.com/index.php?cPath=48_49_61

I believe nextgen and badboy are 14mm.

 

[Mr_Light]

700mA 2.5W Regulated Circuit Board for DIY Flashlights (3V Input) 5-Pack
$9.95
http://www.dealextreme.com/details.dx/sku.4382

 

[perfconnpc]

Thanks gents!

More options than I thought would be available. Not sure how I missed all these when I was searching. :ironic: