executable code (“object code”)), data sheets, BOMs, schematics, application notes, design & development tools, evaluation board material (i.e. BOM, Gerber, . 3-TERMINAL 1A NEGATIVE VOLTAGE REGULATORS. The LM79XX series of three-terminal negative regulator. are designed for a wide range of applications. LM datasheet, LM pdf, LM data sheet, datasheet, data sheet, pdf, Contek Microelectronics, 3-terminal 1A negative voltage regulator. Output.

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The input capacitor 2.

PDF LM7905 Datasheet ( Hoja de datos )

Why do we need Negative Voltage Regulators? Message 4 of 5. Message 3 of 5. Message 1 of 5. Thanks Lynn I tried that with a 1k load and that resulted in an output voltage of Screen capture is attached.

Most Active Software Boards: Message 2 of 5. In many cases where an Op-Amp is working in dual mode power supply a negative voltage will be regulated by these 79XX ICs. Depending on the construction of the model for the regulator, it is possible that it needs a minimum load. Submitted by admin on 10 June Voltage regulators are very common in electronic circuits.


Complete Technical Details can be found at the LM voltage regulator datasheet given at the end of this page.

So our will provide a -5V output voltage. The convergence assistant suggest to switch the integration to the Gear algorithm, which resulted in a stable and correct output. If anyone has suggestions I would be most gratefull. Multisim Voltage reg simulation. Message 5 of 5.

LMCT Texas Instruments National Semiconductor | Ciiva

We just need two capacitors datawheet vale 2. The output regulation is specified for a current change from 5 mA to 1 A. The output current of this IC can go up to 1. These capacitors should be placed close to the terminals for them to work effectively. The datawheet value is mV. So Multisim cannot simulate the output of a garden variety, ultra common, component like the LM Although the datasheet does not specify or call for any minimum load, it also does not specify the performance at no load.

This 7 Watts will be dissipated as heat.

In our case the IC is an negative 5V regulator, meaning it provides -5V as output. I swapped the LM for another -5V regulator, the UPC, which gave the correct output but failed after a few seconds.


Perhaps changes to other options in the “Custom Analysis Options” dialog will improve the convergence. Brief Description on Voltage Regulator Voltage regulators are very common in electronic circuits.

My mistake must be simple, but I can’t spot it. TL — Programmable Reference Voltage. Also they should be of ceramic type, since ceramic capacitors are faster than electrolytic.

This is a typical application circuit of the IC. Negative voltage regulators are mainly used in Op-Amp and lm79005 circuits where a negative supply voltage is needed.

Try putting a load resistor from each output to ground. They provide a constant output voltage for a varied input voltage. So I went back to the LM but that still resulted in the incorrect output. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.