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.

Author: Femi Kazrajar
Country: Sweden
Language: English (Spanish)
Genre: Sex
Published (Last): 18 August 2010
Pages: 22
PDF File Size: 20.19 Mb
ePub File Size: 14.76 Mb
ISBN: 317-1-70631-464-8
Downloads: 29983
Price: Free* [*Free Regsitration Required]
Uploader: Kajilrajas

Solid tantalum capacitors can be used on the voltage output to improve the ripple rejection of the voltage regulator. Please update your bookmarks. However, other values such as lm50 ohms can also be used for R 1.

The LM voltage regulators can provide up to 1. Plan to be about 3V about the desired output voltage.

National Semiconductor – datasheet pdf

The LM is best for you. As in the LM pinout above. Because you like many circuits to make on your working. We can set the output voltage with only two external resistors. When external capacitors are used with a voltage regulator it may be necessary to use protection diodes to datxsheet the capacitors from discharging through low current points into the voltage 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, An optional output capacitor can be added to improve transient response. We have many ways to make it. Created 28 July Although the surge is very short in duration, there is enough energy to damage parts of the regulator IC. Leave a Reply Cancel reply. Because it is the adjustable three terminal positive voltage regulator.


Last update 6 January You see LM circuit below. Which it looks like a popular LM Many electronics circuits and projects for learning in simple ways. No protection diodes are required for output voltages of less than 25V or greater than 10 uF capacitance. This site uses Akismet to reduce spam.

LM Datasheet 3A adjustable Regulator |

The adjustment terminal of the regulator can be bypassed to achieve very high ripple rejection. In addition, it uses internal current limiting, thermal shutdown, and safe mode. 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. If you want to try it. A programmable output regulator.

National Semiconductor

We can use the LM on a wide variety of applications. If you are looking for 3A adjustable power supply. Basic to use LM We love it because easy to use. But It can supply the output current over 3. You don’t want to use too high an input voltage as the excess will lm530 to be dissipated as heat through the regulator.


See the list below you may like it. It looks much like the popular LM A precision current regulator. With connecting a dataxheet resistor between the adjust and output.

To determine the output voltage, enter values for the program R 1 daatasheet set R 2 resistors and hit the “Calculate” button. Quote and Order boards in minutes on https: For example A simple adjustable switching regulator. The LM may be boring for you.

This is an LM Datasheet. See the voltage regulator datasheets datadheet for specific details regarding the dropout voltage and heatsink requirements. Also, its pin output connects the heatsink surface.

Since it has high current over 3A, we must mount the LM on the large heatsink. You can buy at mouser.

The dropout voltage of the IC regulator is about 1. Learn how your comment data is processed. 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 use only 2 resistors to control the output voltage. Even small capacitors can have a low enough internal series resistance to be able to deliver 20A spikes when shorted.