The LM/04HV are monolithic switching regulators de- VIN Range 6V to 42V (LM) .. the front page of this datasheet, the inductor and LED can. Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2All trademarks are the property of. The LM/04HV is a buck regulator derived controlled cur- .. Reproduction of TI information in TI data books or data sheets is permissible.

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LM Datasheet(PDF) – National Semiconductor (TI)

Thread starter cjurczak Start date Dec 27, Operating frequnecy is about kHz, set be a k dataxheet So conduction dissipation alone becomes 0. Or should I try to match my source more carefully to my load?

This board is being use just as a proof of concept, lm3440 I have never used this chip before For a better experience, please enable JavaScript in your browser before proceeding. You must log in or register to reply here.

No where near the designed mA If, for instance, the LED is at 3. Thanks again for all your help Would a higher rated diode with a larger package be of any use to help dissipate heat more effectivly, and hope to keep it operating normally Which brings up another question: Replacing a 4 pin leaded inductor with a 2 pin Started by gkmaia Yesterday at I’d appreciate any comments or previous experience on this topic After letting it run at for a few moments longer it settled at about 16mA and I noticed that they recirculating diode is hot to the touch Articles Top Articles Search resources.

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Up to datasbeet 25mA The inductor is a 22uH 1A inductor The inductors datasheet is here Thanks for all your time, and help If, on the other hand, you are running from 25V you said you are using 30V diodes you have 3.

Ok now for the problem This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.

Sorry for the delayed response, I’m been on the road and I didn’t have anymore specifics From the LM datasheet this seems to be a suitable diode for use in this situation Supply voltage for the system is a 12VDC switching psu Started by fastline Yesterday at 8: I unplugged the power everything cooled down promptly So in an effort to cool it off while still running I blew onto the board Forums Datasheer posts Search forums.

I threw together a small PCB to test and make sure I have everything datasbeet. I was hoping this design would be an energy efficient solution Eventually I’d like l3m404 incorporate it into a larger project, but not unless I can iron out this bugs I know its not much, and the board is kind of messy, but it gets the job done To participate you need to register.


Ubergeek63 Well-Known Member Dec 28, Click here to register now. Welcome to our site! And upon applying power everything repeated Electro Tech is an online community with overmembers who enjoy talking about and building electronic circuits, projects and gadgets. Which is why I have the input voltage at 12VDC And to my surprise it works the first time I turn the datsheet on.

Just saying hello Started by MichaelaJoy Yesterday at 6: By continuing to use this site, you are consenting to our use of cookies. Media New media New comments Search media. I seems dropping all this energy on the diode would be inefficient Potentiometer Questions Started by norbss Yesterday at