LM LMA LM 3-Amp Adjustable Regulators. General Description. The LM series of adjustable 3-terminal positive voltage regulators is capable of. Nov 11, 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. 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 33V. 1. Adj 2.

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Since it has high current over 3A, we must mount the LM on the large heatsink. In addition, it uses internal current limiting, thermal shutdown, and safe mode.

We can use the LM on a wide variety of applications. It looks l,350 like the popular LM See the list below you may like it. The LM voltage regulators can provide up to 1.

LM317 / LM338 / LM350 Voltage Regulator Calculator

Solid tantalum capacitors can be used on the voltage output to improve the ripple rejection of the voltage regulator. However, other values such as or ohms can also be used for R 1. We have many ways to make it. Because you like many circuits to make on your working.

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.


We can set the output voltage with only two external resistors. Created 28 July An optional output capacitor can be added to improve transient response. Because it is the adjustable three terminal positive voltage regulator. Also, its pin output connects the heatsink surface. This is an LM Datasheet. If you are looking for 3A adjustable power supply.

Learn how your comment data is processed. You don’t want to use too high an input voltage as the excess will need to be dissipated as heat through the regulator.

This site uses Akismet to reduce spam. Which it looks like a popular LM Basic to use LM We love it because easy to use.

LM Datasheet(PDF) – Motorola, Inc

No protection diodes are required for output voltages of less than 25V or greater than 10 uF capacitance. To determine the output voltage, enter values for the program R 1 and set Datasbeet 2 resistors and hit the “Calculate” button. Many electronics circuits and projects for learning in simple ways. The LM is best for you.

The adjustment terminal of the regulator can be bypassed to achieve very high ripple rejection. You can buy at mouser.

The dropout voltage of the IC regulator is about 1. The LM may be boring for you. 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.


Please update your bookmarks. 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.

LM / LM / LM Voltage Regulator Calculator and Circuits

But It can supply the output current over 3. You see LM circuit below. With connecting a fixed resistor between the adjust and output. Leave a Reply Cancel reply. A precision current regulator.

Even small datssheet can have a low enough internal series resistance to be able to deliver 20A spikes when shorted. Plan to be about 3V datashfet the desired output voltage. We use only 2 resistors to control the output voltage.

National Semiconductor

A programmable output regulator. Over and Under voltage protection of electrical appliances July 11, Simple Crystal oscillator Circuit using 74LS04 November 17, Transistor stereo bass booster September 15, See the voltage regulator datasheets above for specific details regarding the dropout voltage and heatsink requirements.

Last update 6 January Quote and Order boards in minutes on https: If you want to try it. As in the LM pinout above.