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LM3559: LEDs in parallel

Part Number: LM3559

LED team,

Is it possible to connect two LEDs in parallel on each output of the LM3559?  This would allow the customer to driver two RGBW LEDs with 2 x LM3559.

LM3559 -1 LED1  ->  Red1  ||  Red2

LM3559 -1 LED2  ->  Green1 || Green2

LM3559 -2 LED1 -> Blue1 || Blue2

LM3559 -2 LED2 -> White1 || White2

Could there be a problem with driving the LEDs unevenly?  This is for an application similar to a building strobe light.

Thanks,
Darren