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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Voltage regulators are very common in electronic circuits. The maximum value is mV. In many cases where an Op-Amp is working in dual mode power supply a negative voltage will be regulated by these 79XX ICs. Message 1 of 5. Multisim Voltage reg simulation.

LM Datasheet(PDF) – National Semiconductor (TI)

If anyone has suggestions I would be most gratefull. Perhaps changes to other options in the “Custom Analysis Options” dialog will improve the convergence. So I went back to the LM but that still resulted in the incorrect output.

Most Active Software Boards: Why do we need Negative Voltage Regulators? The output current of dstasheet IC can go up to 1. This 7 Watts will be dissipated as heat. The output regulation is specified for a current change from 5 mA to 1 A.


In our case the IC is an negative 5V regulator, meaning it provides -5V as output. They provide a constant output voltage for a varied input voltage.

LM Datasheet PDF –

The input capacitor 2. Complete Technical Details can be found at the LM voltage regulator datasheet given at the end of this page.

Thanks Lynn I tried that with a 1k load and that resulted in an output voltage of Although the datasheet does not specify or call for any minimum load, it also does not specify the performance at no load. Screen capture is attached.

View lm7905 datasheet:

The convergence assistant suggest to switch the integration to the Gear algorithm, which resulted in a stable and correct output. This is a typical application circuit of the IC.

Message 3 of 5. Try putting a load resistor from each output to ground.

Also they should l7905 of ceramic type, since ceramic capacitors are faster than electrolytic. Brief Description on Voltage Regulator Voltage regulators are very common in electronic circuits. We just need two capacitors of vale 2. Negative voltage regulators are mainly used in Op-Amp and other circuits where a negative supply voltage is needed. So Multisim cannot simulate the output of a garden variety, ultra common, component like the LM So our will provide a -5V output voltage.


These capacitors should be placed close to the terminals for them to work effectively.

Depending on the construction of the model for the regulator, it is possible that it needs a minimum load. Message 2 of 5.

PDF LM7905 Datasheet ( Hoja de datos )

TL — Programmable Reference Voltage. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you datasheef. Submitted by admin on 10 June Message 4 of 5. I swapped the LM for another -5V regulator, the UPC, which gave the correct output but failed after a few seconds.

Message 5 of 5. My mistake must be simple, but I can’t spot it.