LTC2662 DAC 1.5A Full Current Possible?

Dear Sirs!

Currently I’m working on a LTC2662 DAC and I’m wondering that I cannot find a way to use 1.5A output.

There are 4 channels , I can use them 300mA Range.

I think, 4 channels x 300mA = 1.5A .

I'd like to use 1.5A Current Source and Can I control them ?

Any other ideas are welcome.