Please help me figure out which inductor to use from this datasheet. Sorry - it's in Chinese as this is an Asian sourced IC and not sold in the US. (Use google translate if necessary - but, the meaning is clear enough from the digrams and tables. )
The formula for the inductor, given on page 3 is as shown below:
I'd like to use a single energy efficient LED like this (I'm open to other white LED suggestions)
I'm using 2 alkaline AAA batteries.
Based on the formula given above, should Vin be
- 2V fully discharged point of 2 x AAA Alkaline cells?
- 3V (= 2 x new Alkaline AAAs cells) to avoid over current?
Question 2: to calculate P for LED, I use 5mA at 2.9V = 145 mW - which is normal conditions for LED (page 2 from LED datasheet) - good assumption?
I came up with 580nH - is this correct?