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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We can set the ,m350 voltage with only two external resistors. The dropout voltage of the IC regulator is about 1. For example A simple adjustable switching regulator.

LM / LM / LM Voltage Regulator Calculator and Circuits

To determine the output voltage, enter values for the program R 1 and set R 2 resistors and hit the “Calculate” button. With connecting a fixed resistor between the adjust and output. No protection diodes are required for output voltages of less than 25V or greater than 10 uF capacitance. However, other values such as or ohms can also be used for R 1.

You don’t want to use too high an input voltage as the excess will need to be dissipated as heat through the regulator.


Since it has high current over 3A, we must adtasheet the LM on the large heatsink. The LM is best for darasheet. Many electronics circuits and projects for learning in simple ways. Basic to use LM We love it because easy to use. You see LM circuit below. Normally, no capacitors are needed unless the device is situated more than mm 6 inches from the input filter capacitors in which dtasheet an input bypass capacitor is required. See the list below you may like it.

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.

We can use the LM on a wide variety of applications.

National Semiconductor

This is an LM Datasheet. We have many ways to make it.

If you are looking for 3A adjustable power supply. 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. But It can supply the output current over 3. Because it is the adjustable three terminal positive voltage regulator. Solid tantalum capacitors can be used on the voltage datasheey to improve the ripple rejection of the voltage regulator.


The LM voltage regulators can provide up to 1.

As in the LM pinout above. Even small capacitors can have a low enough internal series resistance to be able to deliver 20A spikes when shorted. You can buy at mouser.

LM317 / LM338 / LM350 Voltage Regulator Calculator

Plan to be about 3V about the desired output voltage. In addition, it uses internal current limiting, thermal shutdown, and safe mode. Dtaasheet adjustment terminal of the regulator can be bypassed to achieve very high ripple rejection. This site uses Akismet to reduce spam. Quote and Order boards in minutes on https: Please update your bookmarks.

Which it looks like a popular LM Over and Under voltage protection of electrical appliances July 11, Simple Crystal oscillator Circuit using 74LS04 November 17, Transistor stereo bass booster September 15, Datashret how your comment data is processed.

Created 28 July Because you like many circuits to make on your working. Although the surge is very short in duration, there is enough energy to damage parts of the regulator IC. It looks much like the popular Datasheeet Leave a Reply Cancel reply.

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