I'm trying to design a circuit to power 17 LEDs. The LEDs I'm using are AA2810AQBS/D Blue SMD LEDs with 3.3v Forward Voltage at 20mA.
I would like to power this using EITHER 2xAA Alkaline batteries OR a 5V USB battery pack.
I was looking at the AAT1217-3.3, 3.3V Step Up Converter but I'm not sure if 3.3V is enough and it's unclear to me if this can accept the voltage range that I need for 2xAA's or 5V battery pack (potential battery voltage range of 2.4V to 6V?)
Can I power these LEDs with 3.3V and 1 ohm current limiting resistors?
Any suggestions on a low cost regulator and LED current limiting resistors for my needs?