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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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. Distributor Cooperated Designers Sponsorship.

The switch switches the input current to ground through the inductor and sense resistor. Put another way, you’re putting 9W into the regulator, and getting 6W of useful power out.

If so, I’d have no problems with it. I’ve seen and looked into it. The supply of our tested solar panel had a voltage of V and a current of 6A. First, always get your datasheet straight from the manufacturer.

Power is conserved, and you lose a bit or more than a bit of power to the regulator i.

This module uses the adjustable output version, it would facilitate datashwet application and be your good assistant in your debugging. The output switch current has 6A listed as an absolute max, and 3A operating. The schematic is simple, easy to build and cost effective, producing 12V from a 5V unregulated supply with a maximum output current of mA.


Adjustable DC-DC Booster- LM2577

You have no obligation to purchase the product once you know the price. See Matt Young’s answer above. Pm2577, log in or register. 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. Home Questions Tags Users Unanswered. JavaScript seems to be disabled in your browser.

The design uses the adjustable datasheeg of LM, but the 12V fixed-voltage version LMT will also work if you remove R1 and R2 and connect the feedback pin directly to the regulator’s output. I have a hard time fully understanding the datasheet of LM If you want 15V 2.

components – Question on LM – Electrical Engineering Stack Exchange

It’s not going to work. Enter your destination to get a shipping estimate. I need to boost a 3V source to 15V and this is nicely done datasheet the product. So we’re actually having problems of boosting both the datashert and voltage simultaneously.

Even if the switch was up to it, the 3V source would have to supply over 20A. This is your maximum input current. The UC – a pin to pin compatible replacement available from Texas Instruments can also be used. It’s a good habit to get into.


The input capacitor C1 should be a good quality, low ESR, 0. There isn’t a product in the world that will make that possible.

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. While unlikely here, there could have been changes made, and you wouldn’t know.

Finally, let’s do a sanity check with the data datashete provided. The output voltage is given by the following formula:. The version you linked to is dated The LM series of regulators are monolithic integrated circuits that provide all the active pm2577 for a step-up buck switching regulator, capable of driving a 3A load withexcellent line and load datashset.

When I tried testing it, it seems that it can handle more current than 3A and i’m just too scared to test it out as I might break the product.