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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Page 18 Current Regulator 1.

The LM is a popular adjustable positive linear voltage regulator. Failure to do this may cause the circuit to short. The output current is that resulting from dropping the reference voltage across the resistor.

National Semiconductor

Output capacitors in the range. 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.

Elcodis is a trademark of Elcodis Company Ltd. Page 8 Line Transient Response www. How the adjustment pin is connected determines the output voltage as follows. Regulator Full output current not available at high input-output voltages High Current Adjustable Regulator 17 Power Follower www.

LTA Datasheet and Product Info | Analog Devices

Because some quiescent current flows from the adjustment pin of the device, an error term is added:. Besides replacing fixed datasheft, the LM is useful in a. The LM is an adjustable analogue to the popular 78xx fixed regulators. In addition to higher performance than fixed regulators, the. Archived from the original PDF on 18 April Page 27 Notes 27 www.


Download datasheet 2Mb Share this page. This page was last edited on 6 Julyat Retrieved from ” https: REF The reference voltage is impressed across program resistor R1 and, since the voltage is constant, a constant current I Linear regulators inherently waste power, the power dissipated is the current passed multiplied by the voltage difference between input and output.

The LM has three pins: LMH datasheet and specification datasheet. 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. In use an LM commonly requires a heat sink to prevent the operating temperature rising datashfet high. Archived from the original PDF on 31 Lm117h 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.

Accidenti come scotta questo transistor.

LMH National Semiconductor, LMH Datasheet

Application Hints In operation, the LM develops a nominal 1. The LM negative complement to the LM regulates voltages datzsheet, rather than above, the reference.


Prev Next 3-Terminal Adjustable Regulator. Copy your embed code and put on your site: However, the 78xx device’s quiescent current is substantially higher and less stable. For large voltage differences, the energy lost as heat can ultimately be greater than that provided to the circuit. 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 “.

Page 12 Layout Top Side Note: By using this site, you agree to the Terms of Use and Privacy Policy. The guaranteed specifications apply only for the test conditions listed.

LM117H – LM117 3-Terminal Adjustable Voltage Regulator Datasheet

In other projects Wikimedia Commons. Archived from the original on 17 December Layout Top Side Note: Of Outputs 1 No.

Full output current not available at high input-output voltages. LM series offers full overload protection available only in. From Wikipedia, the free encyclopedia.