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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LMS-ADJ Datasheet(PDF) – National Semiconductor (TI)

What I actually need: These solar cells need to go inside a solar charger controller that’s why dxtasheet need to boost it to 12V. Sign up using Facebook. You must have JavaScript enabled in your browser to utilize the functionality of this website.

The version you linked to is dated The next question is can the LM handle more than 3A? I can’t see any specifications on the datasheet that refers to the maximum input. Non-synchronous rectification Input voltage: You may also like. Home Questions Tags Users Unanswered. I’ve seen and looked into it. TI released a lm22577s version in April Post Your Answer Discard 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.


The switch switches the input current to ground through the inductor and sense resistor. While unlikely here, there could have been changes made, and you wouldn’t know. That is pretty abysmal efficiency for a modern SMPS, but not outside of reasonable for the LM25xx era, and as much of a boost as you’re trying to get.

Adjustable DC-DC Booster- LM2577

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Welcome to Elecrow Online Store. We would be able to supply 0. You can simply remove the item from your cart. The output switch can’t handle it. Only registered users can write reviews. Power is conserved, and you lose a bit or more than a bit of power to the regulator i. The LM series of regulators are monolithic integrated circuits that provide all lm2757s active functions for a step-up buck switching regulator, datsaheet of driving a 3A load withexcellent line and load regulation.

I’m trying to work around it. The maximum switch current is exactly that: We will use solar panels so that would do it.

The source is actually a solar panel. Because it is a boost converter and you can’t break physics. There isn’t a product in the world that will make that possible. This is how a basic boost regulator works. Finally, let’s do a sanity check with the data you provided. I’m actually looking into another product but I’m not sure if it’ll work again if the same inputs were used.


The supply of our tested solar panel had a voltage of V and a current of 6A. When I tried testing it, it seems that it can handle more current datwsheet 3A and i’m just too scared to test it out as I might break the product. Okay, that I understand. Henry Lachica 8 6.

Granted, datasheer 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. 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.

Digikey might be a good place to start. To see why, let’s take a look at the datasheet again. It’s just making life harder. Email Required, but never shown. It’s a good habit to get into. There 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 are probably on the optimistic side. Put another way, you’re putting 9W into the regulator, and getting 6W of useful power out.