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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Now the voltage output lm33171 be near 10V. Product is in design feasibility stage. Here you see we connect two resistors to the voltage regulator. Selectors Simulators and Models. 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. LM is a 3-terminal regulator IC and it is very simple to use. How to use LM Archived from the original PDF on 18 April No availability reported, please contact our Sales office.


LM Voltage Regulator Pinout, Features, Equivalent & Datasheet

How the adjustment pin is connected datashewt the output voltage as follows. The LM is an adjustable analogue to the popular 78xx fixed regulators. The below circuit is designed to take 12V you can supply up to 24V as input and regulate it from 1. To find out more details about it, see the datasheet which is attached below: Failure to do this may cause km3171 circuit to short. Now swap out the R2 resistor and place a 1.

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The LM Voltage Regulator is a 3-terminal adjustable voltage regulator which can supply km3171 output voltage adjustable from 1. LM Datasheet The datasheet for a LM goes much more depth than this article, which was only created to serve as a beginner’s guide to this voltage regulator.

LM3171 Datasheet

It has many application circuits in its datasheet, but this IC is known for being used as a variable voltage regulator.

Linear regulators inherently waste power, the power dissipated is the current passed multiplied by the voltage difference between input and output. This is the trade-off for using linear regulators which are a simple way to provide a stable voltage with few additional components. However, the 78xx device’s quiescent current is substantially higher dataseet less stable.

The same formulae can also be used to calculate the value of resistor for you required output voltage. Remember, voltage regulators are just devices that regulate dtaasheet down to a certain level. Now to make it act as a variable voltage regulator we have to set variable voltages at pin 1 lk3171 can be done by using a potentiometer in the potential divider. Communications Equipment, Computers and Peripherals.


In other projects Wikimedia Commons. It can supply more than 1. This is the pin which allows us to adjust the voltage to the level we want. You can vary the output voltage by simply varying the datasheer. This is the advantage of adjustable voltage regulators.

Because some quiescent current flows from the adjustment pin of the device, an error term is added:. If you need to calculate output voltages or which resistor R2 value you would need for a circuit, see our LM Resistor and Voltage Calculator.

Please contact our sales support for information on specific devices. Like the LM, each of the 78xx regulators is designed to adjust the output voltage until it is some fixed voltage above the adjustment pin which in this case is labelled ” ground “.

LM Datasheet PDF – Positive Voltage Regulator – Fairchild

In this circuit, we want a regulated 5VDC as output. For example, the LM may receive 12V as the input and output a constant 10V as output. No commitment taken to design or produce NRND: Support Center Video Center. Media Subscription Media Contacts.