Can I use this to drive a single white LED?
The input voltage in the application will be approx 2V - 3V (two series AAA batteries).
To drive the LED, the output voltage will want to be ~3.5V (3.2V led Vf + 0.25V feedback voltage) so I would roughly estimate the duty cycle to be ~20% when Vin is 3V. I would assume that the controller can operate at that duty cycle, but I didn't see an indication in the datasheet of minimum switch on-time or duty cycle...