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.

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Thanks Lynn I tried that with a 1k load and that resulted in an output voltage of Message 2 of 5.

LM Fairchild 3-Terminal 1A Negative Voltage Regulator ChipFind Datasheet Archive |

Also they should be of ceramic type, since ceramic capacitors are faster than electrolytic. Brief Description on Voltage Regulator Voltage regulators are very common in electronic circuits.

The convergence assistant suggest to switch the integration to datashewt Gear algorithm, which resulted in a stable and correct output. Message 4 of 5. This is a typical application circuit of the IC.

These capacitors should be placed close to the terminals for them to work effectively. The input capacitor 2. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.

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LM7905 Datasheet

Voltage regulators are very common in electronic circuits. Message 1 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. Complete Technical Details can be found at the LM voltage regulator datasheet given at the end of this page. Screen capture is attached.

This 7 Watts will be dissipated as heat. So our will provide a -5V output voltage.

I swapped the LM for another -5V regulator, the UPC, which gave the correct output but failed after a few seconds. My mistake must be simple, but I can’t spot it.

Submitted by admin on 10 June dztasheet In our case the IC is an negative 5V regulator, meaning it provides -5V as output. Try putting a load resistor from each output to ground. The output current of this IC can go up to 1. Perhaps changes to other options in the “Custom Analysis Options” dialog will improve the convergence. If anyone has suggestions I would be most gratefull.


Most Active Software Boards: Depending on the construction of the model for the regulator, it is possible that it needs a minimum load.

Multisim and Ultiboard

We just need two capacitors of vale 2. Message 3 of 5. They provide a constant output voltage for a varied input voltage. Datasheet I went back to the LM but that still resulted in the incorrect output. Negative voltage regulators are mainly used in Op-Amp and other circuits where a negative supply voltage is needed.

The output regulation is specified for a current lk7905 from 5 mA to 1 A. The maximum value is mV. Although the datasheet does datashwet specify or call for any minimum load, it also does not specify the performance at no load.

So Multisim cannot simulate the output of a garden variety, ultra common, component like the LM TL — Programmable Reference Voltage. Multisim Voltage reg simulation. Message 5 of 5. Why do we need Negative Voltage Regulators?