LL 5402 Wiring

Based on what's in the datasheet, I would do this:

Pin 1 connected to pin 5
Pin 2 connected to pin 4

Pin 6 connected to pin 9

Pin 3 grounded

Output taken from pins 7 (+) and 10 (-).

Input signal to be connected to pins 2&4 (+) and pins 1&5 (- or ground, if single-ended)

That is, primary windings in parallel, secondary windings in series to compensate for the 2:1 turns ratio.
 
Thanks! That's make sense. I will try



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