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Old 20th February 2012, 05:46 PM   #11
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Wind as many turns as possible. Its the inductor in a flyback PSU that stores the energy when the PSU is being lazy.

With this particular SMPS chip a large L will work with a good C L C circuit.

Might not be the best choice of components but it can be made to work.
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Old 20th February 2012, 05:48 PM   #12
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3.3uH is very small and indicative of very high frequencies.

I would ain at mH.
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Old 21st February 2012, 06:57 AM   #13
aetosa is offline aetosa  Greece
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I verified it, it's 3,3uH.
Frequency of operation is 120kHz.
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