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The LM series of adjustable 3-terminal positive voltage ative complement, see LM series data sheet. LM/LMA/LM Package Options. Part. Datasheets, LM/N Datasheet. Design Resources, Development Tool Selector. Featured Product, LMSeries, Adjustable, Three-Pin Positive Voltage. LMH Datasheet, LM National Semiconductor 3-Terminal Adjustable Voltage Regulator Datasheet.

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Included on the chip are current limit, thermal overload. In use an LM commonly requires a heat sink to prevent the operating temperature rising too high.

LM117H – LM117 3-Terminal Adjustable Voltage Regulator Datasheet

By using this site, you agree to the Terms of Use and Privacy Policy. How the adjustment pin is connected determines the output voltage as follows. In other projects Wikimedia Commons. Prev Next 3-Terminal Adjustable Regulator. Full output current not available at high input-output voltages.

Wikimedia Commons has media related to LM and Voltage regulator circuits. Higher lm1177h voltages are obtained by connecting the adjustment pin to a resistive voltage divider between the output and ground. LMH datasheet and specification datasheet Download datasheet.


For applications requiring greater output current, see LM 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. Page 8 Line Transient Response www. Because of this, the error term in dztasheet formula cannot be ignored and the value of the low-side resistor becomes more critical. Elcodis is a trademark of Elcodis Company Ltd.

Besides replacing fixed regulators, the LM is useful in a. The guaranteed specifications apply only for the test conditions listed. This is the trade-off for using linear regulators which are a simple way to provide a stable voltage with few additional components. From Wikipedia, the free encyclopedia.

It was designed by Robert “Bob” Pease.

Accidenti come scotta questo transistor. Linear integrated circuits Voltage regulation. An optional output ca. The LM negative complement to ml117h LM regulates voltages below, rather than above, the reference. If the adjustment pin is connected to ground the output pin delivers a regulated voltage of 1. The LM is a popular adjustable positive linear voltage regulator.


Further, both line and load regulation are better than. This page was last edited on 6 Julyat 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. The LM has three pins: In addition to higher performance than fixed regulators, the.

National Semiconductor – datasheet pdf

LM series offers full overload protection available only in. Maximum Allowable Power Dissipation vs. Because some quiescent current flows from the adjustment pin of the device, an error term is added:. The LM series of adjustable 3-terminal positive voltage.

However, the 78xx device’s quiescent current is substantially higher and less stable.