XP-G maximum drive current.

[qwertyydude]

Simple as that. Does anyone know what the maximum drive current for the XP-G R5 is and what the lumen output would be?

I know technically these dies are usually good for about 1 amp per square millimeter. Making the theoretical max for the XP-G 2 amps.

 

[znomit]

Simple as that. Does anyone know what the maximum drive current for the XP-G R5 is and what the lumen output would be?

I know technically these dies are usually good for about 1 amp per square millimeter. Making the theoretical max for the XP-G 2 amps.

Simple as this...
Cree datasheets.

ps, its 1.5A

 

[qwertyydude]

Not asking what the datasheet says. I'd like to know what's possible. The XM-L has been proven with adequate cooling to easily push 4 amps and give appreciably more lumens. This is in line with the 1 amp per square mm rule the Cree dies are known for. So does anyone here push their XP-G to 2 amps+ and if so is there any output increases.

 

[LEDninja]

See JTR1962's testing.
http://www.candlepowerforums.com/vb...White-LED-lumen-testing&p=3115908#post3115908
2250 mA 544.29 lumens;
2500 mA 546.57 lumens;
2600 mA 542.77 lumens.
Looks like his sample tops out at 2.5A and actually produces less light if you try to drive it harder.

The XM-L has been proven with adequate cooling to easily push 4 amps and give appreciably more INITIAL lumens.
Can't find the thread but IIRC:
There was a thread where after a few minutes the lumens at 4A dropped and the LED got brighter when the tester reduced the current to 3A. That test shows if you need light for more than a few minutes 3A will give you more lumens.