LM317K DATASHEET PDF

LMK STMicroelectronics Linear Voltage Regulators V Adj Positive datasheet, inventory, & pricing. LMK datasheet, LMK pdf, LMK data sheet, datasheet, data sheet, pdf, SemeLAB, A Adjustable Positive Voltage Regulator. STMicroelectronics LMK: 51 available from 3 distributors. Explore Integrated Circuits (ICs) on Octopart: the fastest source for datasheets, pricing, specs and.

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Failure to do datasheeet may cause the circuit to short. The LM negative complement to the LM regulates voltages below, rather than above, the reference.

If the adjustment pin is connected to ground the catasheet pin delivers a regulated voltage of 1. Linear regulators inherently waste power, the power dissipated is the current passed multiplied by the voltage difference between input and output.

This page was last edited on 6 Julyat For large voltage differences, the energy lost as heat can ultimately be greater than that provided to the circuit. However, the 78xx device’s quiescent current is substantially higher and less stable. The output current is that resulting from dropping the reference voltage across the resistor.

Lm317k Data Sheet

Because some quiescent current flows lk317k the adjustment pin of the device, an error term is added:. In use an LM commonly requires a heat sink to prevent the operating temperature rising too high. By using this site, you agree to the Terms of Use and Privacy Policy. Retrieved from ” https: Archived from the original PDF on 31 March The LM is designed to compensate for these fluctuations internally, making dwtasheet measures unnecessary.

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LMK Datasheet pdf – A Adjustable Positive Voltage Regulator – SemeLAB

Archived from the original PDF on 18 April The mechanism used is similar enough that a voltage divider can be used in the same way as with the LM and the output follows the same formula, using the regulator’s fixed voltage for V ref e. The device can be configured datahseet regulate the current to a load, rather than the voltage, by replacing the low-side resistor of the divider with the load itself. The LM is a popular adjustable positive linear voltage regulator. How the adjustment pin is connected determines the output voltage as datahseet.

In packages with a heat-dissipating mounting tab, such as TOthe tab is connected internally to the output pin which may make it necessary to electrically isolate the tab or the heat sink from other parts of the application circuit. Higher regulated voltages are obtained by connecting the adjustment pin to a resistive lm371k divider between the output and ground. Archived from the original on 17 December It was designed by Robert “Bob” Pease.

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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 “. The alternative is to use a switching voltage regulator which is usually more efficient but has a larger footprint and datashdet a larger number of associated components.

Datasheeh LM has three pins: The LM is an adjustable analogue to the popular 78xx fixed regulators.

LMK Datasheet(PDF) – STMicroelectronics

Linear integrated circuits Voltage regulation. Wikimedia Commons has media related to LM and Voltage regulator circuits. Retrieved 31 March Because of this, the error term in the formula cannot be ignored and the value of the low-side resistor becomes more critical.

The LM relates in the same way to the fixed 79xx regulators. This is the trade-off for using linear regulators which are a simple way to provide a stable voltage with few additional components. Accidenti come scotta questo transistor. In other projects Wikimedia Commons.