Part Number: LM, Maunfacturer: Fairchild Semiconductor, Part Family: LM, File type: PDF, Document: Datasheet – semiconductor. executable code (“object code”)), data sheets, BOMs, schematics, application notes, design & development tools, evaluation board material (i.e. BOM, Gerber, . LM datasheet, LM pdf, LM data sheet, datasheet, data sheet, pdf, Contek Microelectronics, 3-terminal 1A negative voltage regulator. Output.

Author: Gacage Bahn
Country: Benin
Language: English (Spanish)
Genre: Business
Published (Last): 6 August 2014
Pages: 294
PDF File Size: 8.19 Mb
ePub File Size: 7.33 Mb
ISBN: 827-8-64370-303-3
Downloads: 14617
Price: Free* [*Free Regsitration Required]
Uploader: Gobei

The circuit diagram for those can be found at the datasheet given at the end of this page. But I don’t see how an output voltage magnitude above rated voltage can ever happen with a healthy device.

LM7912 Datasheet

Not the schematic from the daatasheet. LM regulator doesn’t work by datasheet I’m not dataheet if is stable without bypassing the ground diode. Originally Posted by KlausST. Cooling is interesting, the IC is quite hot because I just added a small alu heatsink. LM regulator doesn’t work by datasheet I thought on the GND line resistance, but the zener diode’s current are mA, and the voltage difference is about 3. Dec 242: Are you applying a sensible minimum load current to ensure that through-leakage can be “soaked up” at the set output voltage?


CMOS Technology file 1. How reliable is it? LM regulator doesn’t work by datasheet I’m aware of a possible problem with 79xx negative voltage regulators that is brought up if they drive a load connected to a positive supply node. LM belongs to the family of Voltage regulators. My code lk7912 work! The output current of this IC is upto 1A, however with appropriate heat sink the datasheet says that a peak current of 2.

TL — Programmable Reference Voltage. LM regulator doesn’t work by datasheet. Synthesized tuning, Part 2: Under V the regulated output falls down.

LM Pinout, Features, Equivalents & Datasheet

I will try it, thank you FvM. Digital multimeter appears to have measured voltages lower than expected. Why my Amp doesn’t work?

How can the power consumption for computing be reduced for energy harvesting? Losses in inductor of a boost converter 9. I don’t understand it.

To comply with the forum rules I replaced the capital letters with underlined letters And: Complete Technical Details can be found at the datasheet given at the end of this page. LM regulator doesn’t work by datasheet You should show the circuit diagram, but from what you have said have you put the diode in series with the ground pin of the the right way around?


LM regulator doesn’t work by datasheet Thank you Klaus! But not too hot and still not explains why the regulator can’t work under V input voltage with the labour supply. LM regulator doesn’t work by datasheet Are you measuring this supply voltage from the regulator VIN pin to its ground pin?

But you are not alone with this behaviour. If tested at load, is the regulator being provided adequate cooling?

Hi, Show schematic and PCB. When you are designing an analog circuitthe circuit might need negative voltage either as a power source or as a reference voltage. Minimum load dataeheet is not either.