Part Number: LM, Maunfacturer: Fairchild Semiconductor, Part Family: LM, File type: PDF, Document: Datasheet – semiconductor. executable code (“object code”)), data sheets, BOMs, schematics, application notes, design & development tools, evaluation board material (i.e. BOM, Gerber, . LM datasheet, LM pdf, LM data sheet, datasheet, data sheet, pdf, Contek Microelectronics, 3-terminal 1A negative voltage regulator. Output.

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It is a component in switching regulator designs and is not a linear regulator like other 78xx devices. Submitted by webmaster on 23 November In other projects Wikimedia Commons. The Input and output capacitors C1 10uF and C2 1uF are used to filter noise from the input and the output voltage respectively. The is the most common, as its regulated 5-volt supply provides a convenient power source for most TTL components. The 78xx line are positive voltage regulators: The output current of this IC is upto 1A, however with appropriate heat sink the datasheet says that a peak current of 2.

Wikimedia Commons has media related to 78xx Series and Voltage regulator circuits. In both cases will be an ideal datashete when you need a negative 12V. I have used a Battery to power the IC, but you can use any power source but notice that the datasyeet voltage should be negative.


Complete Technical Details can be found at the datasheet given at the end of this page. Hence, I have interchanged the polarity of the battery. There are many other ways in which the IC can be used based on your application.

Available in TO package only. January Learn how and when to remove this template message. LM Applications Constant V output regulator to use as power or reference voltage for analog and digital circuits.

This l7912 needs additional citations for verification. There is a related line of 79xx devices which are complementary negative voltage regulators. This page was last edited on 5 Decemberat The 78xx family is commonly used in electronic circuits requiring a regulated power supply due to their ease-of-use and low cost.

A very basic Voltage regulator circuit is shown below. From Wikipedia, the free encyclopedia. Some devices provide slightly different voltages than usual, such as the LM78L62 6.

LM Pinout, Features, Equivalents & Datasheet

The datazheet output voltage is obtained from the Vo 3rd Pin which is also read using a Multimeter. The value of the capacitors need not be the exact values, you can use the closest value you have got. Articles needing additional references from January All articles needing additional references. Industrial Electronics and Control. The LM78S40 from Fairchild is not part of the 78xx family and does not use the same design.


These devices support an input voltage anywhere from around 2. Retrieved from ” https: TL — Programmable Reference Voltage. When you are designing an analog circuitthe circuit might need negative voltage either as a power source or as a reference voltage.

The circuit diagram for those can be found at the datasheet given at the end of this page.

LM7912 Datasheet PDF

Unsourced material may be challenged and removed. Encyclopedia of Electronic Components Volume 1: The SR from Datel is a full switching power supply module designed as a drop-in replacement for 78xx chipsand not a linear regulator like the 78xx ICs. LM belongs to the family of Voltage regulators.

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Meaning it will provide a constant output voltage of V when the input voltage is between You can also check on 78 series for positive voltage regulators. Please help improve this article by adding citations to reliable sources.

For the years, see 8th millennium.

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