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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LM3404 LED Driver chip

I unplugged the power everything cooled down promptly So conduction dissipation alone becomes 0. Up to about 25mA This board is being use just as a proof of concept, datahseet I have never used this chip before Thread starter cjurczak Start date Dec 27, And upon llm3404 power everything repeated Which brings up another question: From the LM datasheet this seems to be a suitable diode for use in this situation Forums New posts Search forums.

I datasgeet dropping all this energy on the diode would be inefficient Ok now for the problem By continuing to use this site, you are consenting to our use of cookies. 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 If, for instance, the LED is at 3.


LM LED Driver chip | Electronics Forum (Circuits, Projects and Microcontrollers)

Sorry for the delayed response, I’m been on the road and I didn’t have anymore specifics Welcome to our site! I was hoping this design would be an energy efficient solution So in an effort to cool it off while still running I blew onto the board 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 Or should I try to match my source more carefully to my load? Thanks again for all your help I know its not much, and the board is kind of messy, but it gets the job done You must log in or register to reply here.

Started by fastline Yesterday at 8: This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. And to my surprise it vatasheet the first time I turn the power on.

Click here to register now. The inductor is a 22uH 1A inductor The inductors datasheet is here If, on the other hand, you are running from 25V you said you are using 30V diodes you have 3.


LM3404 Buck LED driver IC overview

Thanks for all your time, lm33404 help I threw together a small PCB to test and make sure I have everything working. Ubergeek63 Well-Known Member Dec 28, Replacing a 4 pin leaded inductor with a 2 pin Started by gkmaia Yesterday at Operating frequnecy is about kHz, set be a k resistor Potentiometer Questions Started by norbss Yesterday at To participate you need to register.

Just saying hello Started by MichaelaJoy Yesterday at datasheft Supply voltage for the system is a 12VDC switching psu Eventually I’d like to incorporate it into a larger project, but not unless I can iron out this bugs No where near the designed mA Media New media New comments Search media.

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 For a better experience, please enable JavaScript in datasheer browser before proceeding.

Articles Top Articles Search resources. I’d appreciate any comments or previous experience on this topic