The Planted Tank Forum - View Single Post - Built another DIY led driver!
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Old 10-29-2011, 04:01 AM   #7
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Originally Posted by doncityz View Post
So do you mean, that Q1 is the actual current driver?
Yes-Q1 is a P-channel MOSFET. The MOSFET is responsible for handling the actual current load of the circuit. The "brains" behind it is the LM3409 buck controller( it's the tiny IC with the 10 pins )
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