The LM/LM are monolithic integrated circuits that provide all of the power and data sheet are a family of standard inductors and flyback transformers. Part Number: LM, Maunfacturer: National Semiconductor, Part Family: LM, File type: PDF, Document: Datasheet – semiconductor. LMS-ADJ datasheet, LMS-ADJ pdf, LMS-ADJ data sheet, datasheet, data sheet, pdf, National Semiconductor, SIMPLE SWITCHER Step- Up.

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If you’re trying to get 15V at 3A, this part is not going to do it.

Adjustable DC-DC Booster- LM

Find a different, more modern part with synchronous rectification, and while you’re at it, reevaluate whether you really need to use a 3V source. The output switch can’t handle it. The maximum switch current is exactly that: My Cart – 0 item. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and datasjeet policyand that your continued use of the website is subject to these policies.

If so, I’d have no problems with it. By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.


Adjustable DC-DC Booster- LM2577

So we’re actually having problems of boosting both the current and voltage simultaneously. Put another way, you’re putting 9W into the regulator, and getting 6W of useful power out. JavaScript seems to be disabled in your browser. Question on LM Ask Question. I have a hard time fully understanding the datasheet of LM I can’t see any specifications on the datasheet that refers to the maximum input.

Please sign up to the Market mailing list to receive updates on new arrivals, special offers and other discount information. Lm25777s is a very good chance that ” is a Chinese counterfeit so the chip specs may be different from the TI part, and the board specs datasheft probably on the optimistic side.

I’m trying to work around it. Sign up using Facebook. Several things to look at here Granted, it’s a bit difficult to calculate exact switch current from a desired output current, but the point is, at a max switch current of 3A, it’s definitely not going to give you 13A switch current is always higher than output current.

Sign up or log in Sign up using Google. Distributor Cooperated Designers Sponsorship. Crowtail- Base Shield for Pyboard. We would be able to supply 0. The problem is the current out would not be enough when we use a boost converter. The switch switches the input current to ground through the inductor and sense resistor.


The source is actually a solar panel. Okay, that I understand. Because it is a boost converter and you can’t break physics.

LM Boost Converter datasheet, price and equivalents

The other 3W is wasted as heat. Post as a guest Name. These solar cells need to go inside a solar charger controller that’s dataeheet we need to boost it to 12V. The output switch current has 6A listed as an absolute max, and 3A operating. If you read the datasheet of the LM, it has an absolute maximum output switch current of 6. First, always get your datasheet straight from the manufacturer. Digikey might be a good place to start.

Non-synchronous rectification Input voltage: Finally, let’s do a sanity check with the data you provided.

If it isn’t possible to actually do it with this product, what are my other alternatives? Even if the switch was up to it, the 3V source would have to supply over 20A.

With the solar panel, it’s actually possible to have that kind of supply.