WTB: .8v - 4.2V driver for a P60 module project.

I am looking for modes l/m/h or ml/l/m/h with an operational voltage that will allow for a single AA cell. The one I have has way to low of a PWM frequency. I really would like something up around 2kHz or a little higher. Thought I would ask before I used my last ReyLight driver and go to the effort of making it fit!

Thanks