Boost LED Driver for short impulses

[Sp4]

Hi All

I have a need to build a device, producing short (10-200 msec) impulses of UVC LED, powered from 5V power bank or 18650 rechargeable battery.  I see some good topics around, but can't really find how they would behave with short pulses. Will I be able to achieve the stable timing or I will be better of with just regular dc/dc boost and the transistor key?

I am planning to use this LED: XBT-3535-UV-A130-CC275-01 (Current - DC Forward (If) (Max) = 800mA, Voltage - Forward (Vf) (Typ) = 6.5V). I am going to drive it with 700mA. The timing circuit will be defined by ATMega328 which will have some display and timing selection.

To make it work from 18650 or USB Power bank, I need to pick the driver, but don't really have an experience with Boost LED drivers, so need some help with it.

Thanks in advance.