MTN Electronics: LEDs - Batteries - Lights - Chargers - Hosts - Drivers - Components - 1-Stop-US Source

Richard is about to be flooded with boost driver orders once he lists them in stock :smiley:

Is there a reference you guys use to determine the proper output for XHP and MT-G2 LED’s. I mean, is there a good output to heat chart for each that shows how many amps it would take to blow an emitter?

I don’t want to be selecting 4.2 amps for a XHP50.2 when it can’t handle it. While I wouldn’t want 1A if it can really handle 4.0A either.

Check out these examples and look in each of their signatures. I like each member for different information so you should decide for yourself but they basically all test LEDs till they are almost or completely dead.

djozz

koef

Texas_Ace

It’s best to just Google the emitter name and specs. Switch to images and look for charts. I keep a whole folder full of these charts.

For a 6v 50.2 and MT-G2, 4.2A is fine for both.

Just so’s ya know, Richard has tested this boost driver of his to death. That’s the way he does things, he won’t release it until he’s very confident it will work reliably. And he’s at that point now. So while we’re just now seeing these he’s been torture testing for quite some time and tweaking to ensure they hold up. :wink:

I’ve talked to him about these quite a lot and of course am as eager as anyone to get an order placed. I’m told “Soon”, and I believe they’ll be worth it.

:partying_face:

I just ordered one. :wink:
23 more available.

The 17mm boost driver looks good, but I’m hoping the larger ones will have more power. I’m at a point in my flashaholism that I’m not satisfied with a reasonable amount of power. I need an impractical amount of power. :smiley:

Here’s some pictures. Hmmm, no Atiny85.

There’s not a big difference between 4.2A and 6A. So if you wanted a 70.2 in an S2+, 4.2A is still great. You’ll get much longer run time compared to using 2 x 18350.

Maybe you mean the 12v output? That I can understand.

Personally, I’m still waiting for the e-switch versions with ramping. :wink:

I just ordered a boost driver for my S2+ copper edition… I’m planning on using a xhp50 90 cri led that i have on hand for now for the build.

Be sure to post your beam shots and stuff with that LED. I ordered a 50.2 80CRI 4K one to try in a miniC8 OP reflector

Will do, I’ll report back once I have it put together. My led is 5k and the product code is XHP50A-00-0000-0D0UH250G. TA got his hands on some xhp50.2 4.5k 90cri leds that he is going to test on and I think he plans on putting up some for sale. I’m hoping to get my hands on a couple if TA sells it.

They are here:

https://www.mouser.com/ProductDetail/Cree-Inc/XHP50B-00-0000-0D0UH245G?qs=sGAEpiMZZMu4Prknbu83y%252blrQIM%2FH7mNRqhImFp%2FPFvlimbfWWkSrw%3D%3D

Didn’t realize yours were XHP50 and not 50.2 I guess it might not be so comparable to mine. Still interested in your results

Also, I dont want to burst your bubble about that 4500K LED but expect a tint shift if you put it in an S2+, here’s are some beam shots of the zebralight 50.2 4500k 80cri:

Well I’ve used these xhp50 leds to make a triple before so I know I like the tint. The 50.2 leds TA has are 90cri and not 80cri, I’m not sure how much difference that’ll make when it comes to the tint shift. Plus I plan on using TIR optics or a Ledil Boom reflector for the light which should eliminate or reduce the tint shift.

Ordered a 17mm BST and there are now just a handful left… XHP50.2 J4 in a C8 with OP reflector, I hope to get a nice even beam out of it.

My wild guess is an ATtiny1616. Either way I think it’s the component on the bottom which could be nice.

What is the component on the bottom? I can’t make it out.

I can’t make out the writing but it looks like it could be a 20 pin package. The ATtiny1616 data sheet shows a ATtiny1616 20-pin VQFN (on page 15) which is consistent the image.

If that’s the AVR then a attractive feature is “Single pin programming and debugging interface (UPDI)”. That along with the presence of the AVR on the exposed side of the driver is a pretty big deal.

Of course it’s a guess for now… [EDIT] a guess that’s probably wrong… There are 20 pin versions of the ATtiny25/45/85.

Mine says
A645
T25
20MUFB
A8PBYA
Maybe a tiny25-20mu

I think that makes sense. It’s good to have something concrete. Thanks.