Backlight Power Measurement

Aaron Carroll xaaronc at
Wed Oct 28 08:17:53 CET 2009

Hi all,

2009/10/20 Aaron Carroll <xaaronc at>:
> Based on the heating I've noted in L1704, I've ordered some low-R
> inductors to see if that has much effect.

I replaced L1704 with a TDK VLF3012AT @ 2.2uH (data sheet: and repeated the
experiments.  With this new part the efficiency of the conversion
jumped to 80%  :-)

       -- Aaron

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