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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This article needs additional citations for verification. The LM78S40 from Fairchild is not part of the 78xx family and does not use the same design. Hence, I have interchanged the polarity of the battery. Please help improve this article by adding citations to reliable sources. The negative output voltage is obtained from the Vo 3rd Pin which is also read using a Multimeter. TL — Programmable Reference Voltage.

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The SR from Datel is a full switching power supply module designed as a datashewt replacement for 78xx chipsand not a linear regulator like the 78xx ICs. Articles needing additional references from January All articles needing additional references.

In both cases will be an ideal choice 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 supply voltage should be negative. Industrial Electronics and Control.

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LM Datasheet PDF –

Submitted by webmaster on 23 November Retrieved from ” https: Mastering the Raspberry Pi. The output current of this IC is upto 1A, however with appropriate heat sink the datasheet says that a peak current of 2. LM Applications Constant V output regulator to use as power or reference voltage for analog and digital circuits.

Complete Technical Details can be found at the datasheet given at the end of this page. Unsourced material may be challenged and removed.

These devices support an input voltage anywhere from around 2. This page was last edited on 5 Decemberat A very basic Voltage regulator circuit is shown below.

Available in TO package only. LM belongs to the family of Voltage regulators. Some devices provide slightly different voltages than usual, such as the LM78L62 6.

LM7912 Datasheet PDF

Cool Projects for Open Source Hardware. Meaning it will provide a constant output voltage of V when the input voltage is between Encyclopedia of Electronic Components Volume 1: The 78xx family is commonly used in electronic circuits requiring a regulated power supply due to their ease-of-use and low cost. The circuit diagram for those can be found at the datasheet given at the end of this page. The value of the capacitors need not be the exact values, you can use the closest value you have got.

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There are many other ways in which the IC can be used based on your application.

When you are designing an analog circuitthe circuit might need negative voltage either as a power source or as a reference voltage. You can also check on 78 series for positive voltage regulators. The Input and output capacitors C1 10uF and C2 1uF are used to filter noise from the input and the output voltage respectively.

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LM7912 Datasheet

Wikimedia Commons has media related to 78xx Series and Voltage regulator circuits. The 78xx line are positive voltage regulators: The is the most common, as its regulated 5-volt supply provides a convenient power source for most TTL components. There is a related line of 79xx devices which are complementary negative voltage regulators.

Views Read Edit View history. It is a component in switching regulator designs and is not a linear regulator like other 78xx devices.