I am planning on powering 10 white LEDs(LUXEON 3014) from a single AA rechargeable battery with Vin min=0.9V, Vin max=1.4v
VLed=2.8v @ 23mA so total Vout for 10 LEDs Vout=28v, iout=23mA
I found this boost driver from Diodes ZXSC310. The issue is the app notes doesn't tell you how to calculate key parameters like the inductor.
This is the schematic I will be using. Instead of D1 I will have 10 LEDs.
Now as far as values I used this calculator to find the inductor value
https://learn.adafruit.com/diy-boost-calc/the-calculator
Does L1=7.2uH ipeak=0.665A and a duty cycle D=0.975 sounds about right?
Would you recommend having the LEDs in parallel instead?
if that's the case then Vout becomes Vout=2.8V, Iout=23ma*10=230mA.
The downside is the inductor will have to be bigger and the LEDs will need a balast resistor to even their light output.
I would appreciate your input.
VLed=2.8v @ 23mA so total Vout for 10 LEDs Vout=28v, iout=23mA
I found this boost driver from Diodes ZXSC310. The issue is the app notes doesn't tell you how to calculate key parameters like the inductor.
This is the schematic I will be using. Instead of D1 I will have 10 LEDs.
Now as far as values I used this calculator to find the inductor value
https://learn.adafruit.com/diy-boost-calc/the-calculator
Does L1=7.2uH ipeak=0.665A and a duty cycle D=0.975 sounds about right?
Would you recommend having the LEDs in parallel instead?
if that's the case then Vout becomes Vout=2.8V, Iout=23ma*10=230mA.
The downside is the inductor will have to be bigger and the LEDs will need a balast resistor to even their light output.
I would appreciate your input.