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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If you want to try datashete. Because you like many circuits to make on your working. Created 28 July You can buy at mouser.

This is an LM Datasheet. This site uses Akismet to reduce spam. We use only 2 resistors to control the output voltage. The LM is best for you. A precision current regulator.

LM317 / LM338 / LM350 Voltage Regulator Calculator

An optional output capacitor can be added to improve transient response. As in the LM daatasheet above. Which it looks like a popular LM A programmable output regulator.

The adjustment terminal of the regulator can be bypassed to achieve very high ripple rejection. Many electronics circuits and projects for learning in simple ways. 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 dagasheet.


It looks much like the popular LM Last update 6 January But It can supply the output current over 3. Over and Under voltage protection of electrical appliances July 11, Simple Crystal oscillator Circuit using 74LS04 November 17, Transistor stereo bass booster September 15, The dropout voltage of the IC regulator is about 1. However, other values such as or ohms can also be used for R 1.

Also, its pin output connects the heatsink surface.

LM / LM / LM Voltage Regulator Calculator and Circuits

Leave a Reply Cancel reply. Plan to be about 3V about the desired output voltage. See the voltage regulator datasheets above for specific details regarding the dropout voltage and heatsink requirements.

To determine the output voltage, enter values for the program R 1 and set R 2 resistors and hit the “Calculate” button.

No protection diodes are required for output voltages datasheeet less than 25V or greater than 10 uF capacitance. If you are looking for 3A adjustable power supply.

National Semiconductor

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


Although the surge is very short in duration, there is enough energy to damage parts of the regulator IC. In addition, it uses internal current limiting, thermal shutdown, and safe mode. You see LM circuit below.

LM Datasheet 3A adjustable Regulator |

We have many ways to make it. Normally, no capacitors are needed unless the device is situated more than mm 6 inches from the input daasheet capacitors in which case an input bypass capacitor is required. Please update your bookmarks. For example A simple adjustable switching regulator. Even small capacitors can have a low enough internal series resistance to be able to deliver 20A spikes when shorted. Solid tantalum capacitors can be used on the voltage output to improve the ripple rejection of the voltage regulator.

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 datashewt voltage datasheeet. Because it is the adjustable three terminal positive voltage regulator.

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