executable code (“object code”)), data sheets, BOMs, schematics, application notes, design & development tools, evaluation board material (i.e. BOM, Gerber, . LM LM – 3-Terminal Negative Regulator, Package: to , Pin Nb=3. The LM79XX series of 3-terminal regulators is available with fixed output. LM datasheet, LM pdf, LM data sheet, datasheet, data sheet, pdf, Contek Microelectronics, 3-terminal 1A negative voltage regulator. Output.

Author: Gurg Mosida
Country: Djibouti
Language: English (Spanish)
Genre: Business
Published (Last): 13 May 2008
Pages: 163
PDF File Size: 4.66 Mb
ePub File Size: 5.81 Mb
ISBN: 154-7-39391-333-5
Downloads: 39095
Price: Free* [*Free Regsitration Required]
Uploader: Vujas

So I went back to the LM but that still resulted in the incorrect output. We just need two capacitors of vale 2. Brief Description on Voltage Regulator Voltage regulators are very lm77905 in electronic circuits.

Negative voltage regulators are mainly used in Op-Amp and other circuits where a negative supply voltage is needed. This 7 Watts will be dissipated as heat. Message 2 of 5. Submitted by admin on 10 June They provide a constant output voltage for a varied input voltage.

TL — Programmable Reference Voltage. I swapped the LM for another daasheet regulator, the UPC, which gave the correct output but failed after a few seconds. Message 4 of 5. Depending on the construction of the model for the regulator, it is possible that it needs a minimum load.


If anyone has suggestions I would be most gratefull.

Screen capture is attached. So Multisim cannot simulate the output of a garden variety, ultra common, component like the LM The maximum value is mV. The output regulation is specified for a current change from 5 mA to 1 A. Message datashert of 5. So our will provide a -5V output voltage. Try putting a load resistor from each output to ground.

noobie problem with voltage regulator simulation – Discussion Forums – National Instruments

These capacitors should be placed close to the terminals for them to work effectively. Also they should be of ceramic type, since ceramic capacitors are faster than electrolytic. Perhaps changes to other options in datadheet “Custom Analysis Options” dialog will improve the convergence. Multisim Voltage reg simulation. Complete Technical Details can be found at the LM voltage regulator datasheet given at the end of this page.

Multisim and Ultiboard

Most Active Software Boards: Voltage regulators are very common in electronic circuits. Message 5 of 5. In our case the IC is an negative 5V regulator, meaning it provides -5V as output. This is a typical application circuit of the IC.


LMCT Texas Instruments National Semiconductor | Ciiva

Why do we need Negative Voltage Regulators? In many cases where an Op-Amp is working in dual mode power supply a negative voltage will be datasheeet by these 79XX ICs. My mistake must be simple, but I can’t spot it.

The convergence assistant suggest to switch the integration to the Gear algorithm, which resulted in a stable and correct output. Thanks Lynn I tried that with a 1k load and that resulted in an output voltage of Message 1 of 5. Xatasheet output current of this IC can go up to 1. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.

Although the datasheet does not specify or call for any minimum load, it also does not specify the performance at no load. The input capacitor 2.

Subscribe US Now