If you are using too large a PFET, that can be a problem. This item will be posted through the Global Shipping Program and includes international tracking. Have one to sell? Once its functional, and running cool, then comes reducing board space. Forums New posts Search forums.

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You must return items in their original packaging and in the same condition as when you received them. Any example circuits apart from those from national? Everything gets hot, regulation suffers.

You can’t use ceramic on the primary cap l3m485, unless as you stated, you use a series resistor, one of those. I realise my posts are long, and possibly boring lol but I shall report back results when parts arrive.

The hot fet means there is a significant voltage drop across the fet, likely activating the current limit. CafeLogic New Member Mar 13, But I’m guessing my efficiency is far lower. For additional information, see the Global Shipping Program terms and conditions lmm3485 opens in a new window or tab This amount includes applicable customs duties, taxes, brokerage and other fees.


Articles Top Articles Search resources. La Poste – Lettre Suivie Internationale. It’s efficiency is still high, and seems to do the job as well as the SMPS chip, but at much lower cost. This amount is subject to change until you make payment.

LM Led Eval Demo Board Regulator With V Output @A 1pcs | eBay

Blueteeth Well-Known Member Mar 19, In both ked and my specific circuit. Back to home page Return to top. Wow, thanks for the reply guys! If you ever wondered how you motherboard can deliver Amps to your power hungry Core 2 Quad with those tiny caps, they use what is called a multiphase buck regulator.

No additional import charges at delivery! If the unit is not laid out carefully with short leads and a good ground plane, it may not operate properly.

> circuits > Lm Led Demo Board l –

Note its single sided, with a couple of jumpers on the other side And there it stayed, changing only slightly with load but there is a lower limit for load. The answer is in your hot PFET.

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Lm3485 Led Demo Board

Back to home page. CafeLogic New Member Aug 30, The LM features the ability to connect several codecs together in a system to provide up to l,3485 channels for sur- round sound applications. I’ve had nothing but great results with the LMN It does, but it also has crap switching characteristics.

As for your cap, that is probably the rest of the problem. Original price EUR If your PFET is getting hot, here is my advice. If you are using too large a PFET, that can be a problem. Judging by the 22uH inductor, I would off-the-cuff guess this circuit was designed to operate around k.

Although the lm4385 board applicaiton note same circuit claims it will hold regulation for V input.