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.
|Published (Last):||2 September 2009|
|PDF File Size:||6.94 Mb|
|ePub File Size:||1.79 Mb|
|Price:||Free* [*Free Regsitration Required]|
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 change from 5 mA to 1 A.
TL — Programmable Reference Voltage. Complete Technical Details can be found at the LM voltage regulator datasheet given at the end of this page. Submitted by admin on 10 June Message 1 of 5. Message 3 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.
My mistake must be simple, but I can’t spot it. Try putting a load resistor from each output to ground. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. So Multisim cannot simulate the output of a garden variety, ultra common, component like the LM The output current of this IC can go up to 1. We just need two capacitors of vale 2.
Brief Description on Voltage Regulator Voltage regulators are very common in electronic circuits. Most Active Software Boards: So I went back to the LM but that still resulted in the incorrect output.
Message 4 of 5. The convergence assistant suggest to switch the integration to the Gear algorithm, which resulted in a stable and correct output. The maximum value is mV.
View lm7905 datasheet:
Why do we need Negative Voltage Regulators? Although the datasheet does not specify or call for any minimum load, it also does not specify the performance at no load.
Thanks Lynn I tried that with a 1k load and that resulted in an output voltage of I swapped the LM for another -5V regulator, the UPC, which gave the correct output but failed after a few seconds. Multisim Voltage reg simulation.
They provide a constant lm795 voltage for a varied input voltage. Depending on the construction of the model for the regulator, it is possible that it needs a minimum load. Screen capture is attached. The input capacitor 2. Message 5 of 5. This 7 Watts will be dissipated as heat. In our case the IC is an negative 5V regulator, meaning it provides -5V as output.
Voltage regulators are very common in electronic circuits. Also they should be of ceramic type, since ceramic capacitors are faster than electrolytic. So our will provide a -5V output voltage. Perhaps changes to other options in the “Custom Analysis Options” dialog will improve the convergence.
LMCT Texas Instruments National Semiconductor | Ciiva
If anyone has suggestions I would be most gratefull. Message 2 of 5.
These capacitors should be placed close to the terminals for them to work effectively. This is a typical application circuit of the IC.