LMK STEEL National Semiconductor datasheet pdf data sheet FREE Datasheets (data sheet) search for integrated circuits (ic), semiconductors and other. LMK STEEL. NATIONAL ative complement, see LM series data sheet. . LMA and LM Electrical Characteristics (Note 3). LMK STEEL/NOPB IC REG POSITIVE ADJ TO-3 National Semiconductor datasheet pdf data sheet FREE from Datasheet (data sheet).

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Views Read Edit View history. Archived from the original PDF on 18 April 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. This page dataheet last edited on 6 Julyat The LM has three ml317k Accidenti come scotta questo transistor.

In use an LM commonly requires a heat sink to prevent the operating temperature rising too high.

Retrieved from ” https: Because some quiescent current flows from the adjustment pin of the device, an error term is added:. The LM relates in the same way to the fixed 79xx regulators. Because of this, the error term in the formula cannot be ignored and the value of the low-side resistor becomes more critical.

Failure to do this may cause the circuit to short. Archived from the original PDF on 31 March Archived from the original on 17 December Higher regulated voltages are obtained by connecting the adjustment pin to a resistive voltage divider between the output and ground. 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.


LM Datasheet and Product Info | Analog Devices

Linear regulators inherently waste power, the power dissipated is the current passed multiplied by the voltage difference between input and output. The LM negative complement to the LM regulates voltages datasheft, rather than above, the reference.

It was designed by Robert “Bob” Pease. 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. This is the trade-off for using linear regulators which are a simple way to provide a stable voltage with few additional components. How the adjustment pin is eatasheet determines the output voltage as follows.

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The LM is an adjustable analogue to the popular 78xx fixed regulators. From Wikipedia, the free encyclopedia. For large voltage differences, the energy lost as heat can ultimately be greater than that provided to the circuit. Retrieved 31 March The LM is designed to compensate for these fluctuations internally, making such measures unnecessary.


The output current is that resulting from dropping the reference voltage across the resistor. In other projects Wikimedia Commons. If the adjustment pin is connected to ground the output pin delivers a regulated voltage of 1.

LMK STEEL Datasheet pdf – 3-Terminal Adjustable Regulator – National Semiconductor

The LM is a popular adjustable positive linear voltage regulator. However, the 78xx device’s quiescent current is substantially higher and less stable.

Wikimedia Commons has media related to LM and Voltage regulator circuits. Linear integrated circuits Voltage regulation.

By using this site, you agree to the Terms of Use and Privacy Policy. 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 device can be configured to regulate the current to a load, rather than the voltage, by replacing the low-side resistor of the divider with the load itself.