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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters . LM, LM Datasheet. DS – Rev 20 – May For further information contact your local STMicroelectronics sales office. The LM, LM are monolithic integrated circuits in TO, TOFP and DĀ²PAK packages intended for use as positive adjustable voltage regulators.

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When it comes to variable voltage regulation requirements LM would most likely be the first choice. Distributor Name Region Stock Min. No commitment taken to design or produce NRND: The below circuit is designed to take 12V you can supply up to 24V as input and regulate it from 1. The LM is an adjustable analogue to the popular 78xx fixed regulators.

Computers and Peripherals Data Center. Archived from the original on 17 December Therefore, you can see based on this formula, that the more the value of resistor R2 increases, the greater the voltage output. The nominal output voltage is selected by means of a resistive divider, making the device exceptionally easy to use and eliminating the stocking of many fixed regulators.


Who We Are Management. For example, the LM may receive 12V as the input and output a constant 10V as output.

LM3171 Datasheet

Failure to do this dattasheet cause the circuit to short. The LM is a popular adjustable positive linear voltage regulator. The alternative is to use a switching voltage regulator which is usually more efficient but has a larger footprint and requires a larger number of associated components.

Getting started with eDesignSuite. Now swap out the R2 resistor and place a 1.

LM317 Voltage Regulator

To find out more details about it, see the datasheet which is attached below: To adjust output, we swap out resistor R2 value for a different resistance. You can vary the output voltage by simply varying the potentiometer.

Buy Direct Add to cart. Because some quiescent current flows from the adjustment pin of the device, an error term is added:. The voltage which enters this lm31171 must be larger than the voltage it is feeding out. In this circuit, we want a regulated 5VDC as output. If the adjustment pin is connected to ground the output pin delivers a regulated voltage of 1. No availability reported, please contact our Sales office. We do this by changing the value of the resistor connected to the Adj pin of the voltage regulator.

And the simulation shows 7. Product is in volume production only to support customers ongoing production.


LM Datasheet, LM PDF Schematic, Manual, Equivalent – Fairchild Semiconductor

Getting started with eDesignSuite 5: Higher regulated voltages are obtained by connecting the adjustment pin to a resistive voltage lm171 between the output and ground. The LM relates in the same way to the fixed 79xx regulators. Please contact our sales support for information on specific devices. LM is a 3-terminal regulator IC and it is very simple to use.

IoT for Smart Things. This is the pin which allows us to adjust the voltage to the level we want.

Remember, voltage regulators are just devices that regulate voltage down to a certain level. Not Recommended for New Design. In our setup now, these are the values we’re going to use. The LM has three pins: You can adjust it to any voltage within the range that the voltage regulator supports. Here dattasheet see we connect two resistors to the voltage regulator.

Looking from the front of the voltage regulator, the datasheeg pin on the left is the Adjustable Pin, the middle is Vout, and the last pin on the right is V IN.