I am looking for the datasheet of the old chip labelled as LM78H12K. It was originally manufactured by the National Semiconductor company, which is now a part of Texas Instruments. Is there any archive of these old datasheets? I would really appreciate that.
Photo of the chip:
Thank you very much!
While I research this request, as the LM78H12K seems to be an obsolete device, there is an E2E post that at least shows the pinout and package: https://e2e.ti.com/support/power_management/linear_regulators/f/321/p/545084/1990043 .
And just curious, are you using this for a new design, or redesigning a product? If so, perhaps we can recommend a newer, enhanced performance device? I'll just need the requirements for the design.
At your service,
also, just FYI, the basic LM7812 datasheet is here: http://www.ti.com/lit/ds/symlink/lm7800.pdf , although the 'H' and 'K' designations do not appear in this version.
Here's the first rev of the datasheet from 2000.
The specific variation you asked about is not highlighted. I'm wondering where you got the picture, and if your design actually uses these?
In reply to LeonardEllis:
Hello, thank you very much for the datasheet. Still I am not sure this is the right one, this doesn't contain "H" and "K" designations - I believed that "H" stands for 5A output and "K" means TO-3 package. (There are old datasheets such as uA78H05 from Fairchild or 78H12A from New Era Electronics which contain the letter "H".)
I got that chip from e-bay reseller (the photo is from that store), so this chip may be a fake and who knows what is inside...
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.