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IR/Flash LED driver

Other Parts Discussed in Thread: LM3550

Dear team,

I am looking for a driver for below application.

Would you help to advise you proposal?

 

Application :
-4pcs IR LED will be used, thus it's peak current is about 1.5A * 4 = 6A
-IR LED is target to be on 2ms, 30Hz periodically.
-LED Forward voltage 3.15V typ / pcs

-Vin : 2.5V ~ 6V

-To reduce the peak current demand from the battery to a minimum, high-capacity storage capacitor on the output of the regulator will be considered.

Target Iin below 600mA ( nice to have )

Thank you.

Kane