Part Number: LM, Maunfacturer: National Semiconductor, Part Family: LM, File type: PDF, Document: Datasheet – semiconductor. General Description. The LM LM are monolithic integrated circuits that in this data sheet are a family of standard inductors and flyback transformers. LM datasheet, LM pdf, LM data sheet, datasheet, data sheet, pdf, National Semiconductor, Series SIMPLE SWITCHER Step-Up Voltage.

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Sign up or log in Sign up using Google. The UC – a pin to pin compatible replacement available from Texas Instruments can also be used.

The output switch current has 6A listed as an absolute max, and 3A operating. HenryLachica The seller meant exactly what they said. The other 3W is wasted as heat. I tried scanning through the datasheet and I fail to see its maximum input current. Please, log in or register. I have a hard time fully understanding the datasheet of LM So if we stack it up, we’re gonna have a total of 4V and 6A, as a source tested the solar cells during a very hot day.

Low values of ESR can be achieved by using larger value capacitors or by paralleling multiple smaller-value capacitors.


If so, I’d have no problems with it. 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 LM is available in different packages: Email Required, but never shown. The version you linked to is dated Sign up using Facebook.

What you’re wanting is physically not possible. 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.

Adjustable DC-DC Booster- LM2577

The next question is can the LM handle more than 3A? Our price is lower than the manufacturer’s “minimum advertised price. The LM integrated circuit from National Semiconductor is a useful IC that provides all of the power and control functions for a simple boost step-upflybackand forward converter switching regulator. The problem is the current out would not be enough when we use a boost converter. Even if the switch was up to it, the 3V source would have to supply over 20A.

But the inductor is one of the most critical components in these types of circuits, so it’s much safer and simpler to or use ready made off-the shelf parts: While unlikely here, there could have been changes made, and you wouldn’t know. Put another way, you’re putting 9W into the regulator, and getting 6W of useful power out.


I bought this product that has a LM in it and the specifications indicated by the seller that it can have a maximum output current of 2A with a maximum input current of 3A.

components – Question on LM – Electrical Engineering Stack Exchange

Post as a guest Name. We will use solar panels so that would do 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. You can design and make your own inductor using a suitable core recuperated from old equipment if you have the knowledge, practical experience and equipment for this task. There are may boost converters available. The maximum switch current is exactly that: You may also like. Welcome to Elecrow Online Store.