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TPS61043: single white LED?

Part Number: TPS61043

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...