I would like to use the LM3410 for powering a TFT Backlight Panel.
The backlight specifications are as following:
- 3 Strings of 6 LED each
- Total Rating: 16.2-19.8V @ 60mA
I used the part of 8.2.1.2.2 from the datasheet since its rather similar to my application, therefore
Dmax = (Vout - n x Vin) / Vout = 19.2V - 0.9 x 5V = 0.76
and the Inductor:
L1 = (Vin x Dmax x Ts) / 2x ILpp = (5V * 0.76 * 625us) / 2 x 120mA = 9.6uH
For the inductor i would choose 12uH
The inductor of choice would be Coilcraft LPS6235-123MRC (12uH 20% 1.75A 110mOhms shielded)
Is this a good choice and correct calculation
