LM LMA LM 3-Amp Adjustable Regulators. General Description. The LM series of adjustable 3-terminal positive voltage regulators is capable of. APPLICATION HINTS. In operation, the LM develops a nominal V reference voltage, V(ref), between the output and adjustment terminal. The reference. The LM is an adjustable 3-terminal positive voltage regulator capable of supplying in excess of A over an output voltage range of V to.

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The LM is best for you. Leave a Reply Cancel datashheet. Although the surge is very short in duration, there is enough energy to damage parts of the regulator IC.

Since it has high current over 3A, we must mount the LM on the large heatsink. Last update 6 January You can buy at mouser. See the voltage regulator datasheets above for specific details regarding the dropout voltage and heatsink requirements.

Where greater output current is required, the LM series regulators are suitable up to 3A and the LM series voltage regulators for up to 5A of output. To determine the output voltage, enter values for the program R 1 and set R 2 resistors and hit the “Calculate” button. Created 28 July Normally, no capacitors are needed unless the device is situated more than mm 6 inches from the input filter capacitors in which case an input bypass capacitor is required.


We use only 2 resistors to control the output voltage. We have many ways to make it. It looks much like the popular LM This is an LM Datasheet.

But It can supply the output current over 3.

However, other values such as or ohms can also be used for R 1. We can use the LM on a wide variety of applications.

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Learn how your comment data is processed. A precision current regulator. In addition, it uses internal current limiting, thermal datasueet, and safe mode. An optional output capacitor can be dataheet to improve transient response. Solid tantalum capacitors can be used on the voltage output to improve the ripple rejection of the voltage regulator.

Even small capacitors can have a low enough internal series resistance to be able to deliver 20A spikes when shorted. See the list below you may like it. The dropout voltage of the IC regulator is about 1. As in the LM pinout above. Please update your bookmarks.

Over and Under voltage protection of electrical appliances July 11, Simple Crystal oscillator Circuit using 74LS04 November 17, Transistor stereo bass booster September 15, Quote and Order boards in minutes on https: With connecting a fixed resistor between the adjust and output.

When external capacitors are used with a voltage regulator it may be necessary to use protection diodes to prevent the capacitors from discharging through low current points into the voltage regulator.


Also, its pin output connects the heatsink surface. Many electronics circuits and projects for learning in simple ways. If you want to try it. We can set the output voltage with only two external resistors. This site uses Akismet to reduce spam.

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Which it looks like a popular LM You see LM circuit below. The LM voltage regulators can provide up to 1. A programmable output regulator. No protection diodes are required for output voltages of less than 25V or greater than 10 l350 capacitance.

Because it is the adjustable three terminal positive voltage regulator. You don’t want to use too high an input voltage as the excess will need to be dissipated as heat through the regulator. Because you like many circuits to make on your working.

Plan to be about 3V about the desired output voltage. Basic to use LM We love it because easy to use. If you are looking for 3A adjustable power supply. The adjustment terminal of the regulator can be bypassed to achieve very high ripple rejection.