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 may be boring for you. We can use the LM on a wide dztasheet of applications. 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. In addition, it uses internal current limiting, thermal shutdown, and safe mode.

If you want to try it. You can buy at mouser. Quote and Order boards in minutes on https: A programmable output regulator.

This is an LM Datasheet. We have many ways to make it. To determine the output voltage, enter om350 for the program R datashdet and set R 2 resistors and hit the “Calculate” button. 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. Last update 6 January The dropout voltage of the IC regulator is about 1.


Many electronics circuits and projects lm35 learning in simple ways. Even small capacitors can have a low enough internal series resistance to be able to deliver 20A spikes when shorted.

LM317 / LM338 / LM350 Voltage Regulator Calculator

But It can supply the output current over 3. When external capacitors are used with a voltage regulator it lm3550 be necessary to use protection diodes to prevent the capacitors from discharging through low current lk350 into the voltage regulator.

Leave a Reply Cancel reply. Please update your bookmarks. Which it looks like a popular LM Basic to use LM We love it because easy to use. If you are looking for 3A adjustable power supply. This site uses Akismet to reduce spam. You see LM circuit below.

Although the surge is very short in duration, there is enough energy to damage parts of the regulator IC. For example A simple adjustable switching regulator.

No protection diodes are required for output voltages of less than 25V or greater than 10 uF capacitance. You don’t want to use too high an input voltage as the excess will need to be dissipated as heat through the regulator. Plan to be about 3V about the desired output voltage. We can set the output voltage with only two external resistors. The adjustment terminal of the regulator can be bypassed to achieve very high ripple rejection. See the voltage regulator datasheets above for specific details regarding the dropout voltage and heatsink requirements.


Since it has high daatasheet over 3A, we must mount the LM on the large heatsink.

Learn how your comment data is processed. Because you like many circuits to make on your working. It looks much like the popular LM See the list below you may like it. The LM is best for you. A precision current regulator. Also, its pin output connects the heatsink surface.

With connecting a fixed resistor between the adjust and output. As in the LM pinout above. Solid tantalum datsaheet can be used on the voltage output to improve the ripple rejection of the voltage regulator.

Because it is the adjustable three terminal positive voltage regulator. An optional output capacitor can be added to improve transient response.

LM / LM / LM Voltage Regulator Calculator and Circuits

Created 28 July We use only 2 resistors to control the output voltage. However, other values such as or ohms can also ddatasheet used for R 1. The LM voltage regulators can provide up to 1. Over and Under voltage protection of electrical appliances July 11, Simple Crystal oscillator Circuit using 74LS04 November 17, Transistor stereo bass booster September 15,