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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What you’re wanting is physically not possible. Home Questions Tags Users Unanswered. 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 vatasheet regulator.

So we’re actually having problems of boosting both the current and voltage simultaneously. My Cart – 0 item. Several things to look at here I’ve seen and dataasheet into it. We would be able to supply 0. Distributor Cooperated Designers Sponsorship.

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. You can simply remove the item from your cart. It’s a good habit to get into.

Adjustable DC-DC Booster- LM2577

You must have JavaScript enabled in your browser to utilize the functionality of this website. First, always get your datasheet straight from the manufacturer. 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 datasheer.


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. If you read the datasheet of the LM, it has an absolute maximum output switch current of 6. To see why, let’s take a look at the datasheet again.

Sign up using Facebook. See Matt Young’s answer above. There isn’t a product in the world that will make that possible. The schematic is simple, easy to build and cost effective, producing 12V from a 5V unregulated supply with a maximum output current of mA.

Sign up using Email and Password. 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. Post as a guest Name. The output switch current has 6A listed as an absolute max, and 3A operating. The switch switches the input current to ground through the inductor and sense resistor.

I only get 0. The output switch can’t handle it. The LM series of regulators are monolithic integrated circuits that provide all the active functions for a step-up buck switching regulator, capable of driving a 3A load withexcellent line and load regulation.

Only registered users can write reviews. The next question is can the LM handle more than 3A?

If you’re trying to get 15V at 3A, this part is not going to do it. L2m577 other 3W is wasted as heat. 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.

This module uses the adjustable output version, it would facilitate your application and be your good assistant in your debugging. There is a very good chance that ” is a Chinese counterfeit so the chip specs may be different datasheett the TI part, and the board specs are probably on the optimistic side.


Henry Lachica 8 6. By using our site, you acknowledge datasueet you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

Adjustable DC-DC Booster- LM

This is your maximum input current. By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policydatasheet that your datasheey use of the website is subject to these policies. 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.

Okay, that I understand.

So if we stack it up, we’re gonna have a total of 4V and 6A, as a source tested the solar lm25777 during a very hot day. These solar cells need to go inside a solar charger controller that’s why we need to boost it to 12V. The LM is available in different packages: Our price is lower than the manufacturer’s “minimum advertised price.

Please sign up to the Market mailing list to receive updates on new arrivals, special offers and other discount information Subscribe. If you want 15V 2.