The µA78S40 is a switching regulator subsystem, consisting of a temperature compensated voltage reference, controlled–duty cycle oscillator with an active. 78S40 datasheet, 78S40 circuit, 78S40 data sheet: NSC – Universal Switching Regulator Subsystem,alldatasheet, datasheet, Datasheet search site for. 78S40 datasheet, 78S40 circuit, 78S40 data sheet: ONSEMI – UNIVERSAL SWITCHING REGULATOR SUBSYSTEM,alldatasheet, datasheet, Datasheet search.

Author: Moogulrajas Gardalrajas
Country: Myanmar
Language: English (Spanish)
Genre: Software
Published (Last): 7 January 2015
Pages: 348
PDF File Size: 10.67 Mb
ePub File Size: 4.1 Mb
ISBN: 816-4-36689-240-1
Downloads: 15637
Price: Free* [*Free Regsitration Required]
Uploader: Zulkikora

As BRE has datasyeet have a look at simple switchers, or look at the 78S40 data sheet Welcome to our site! The 78S40 chip is so old, it’s data sheet may have gone through some “cut downs” which is what they do with old products datassheet they don’t want to waste a lot of catalog pages on.

Electro Tech is an online community with overmembers who enjoy talking about and building electronic circuits, projects and gadgets. I found this attached file on the 78S40 datasheet. Sep 27, 8. And what about C value? Quote of the day.

Just saying hello Started by MichaelaJoy Yesterday at 6: High voltage 50v step down regulator Posted by MattP in forum: To participate you need datasneet register.


Sep 27, 9. Do you already have an account? Sep 27, 6. Chippie Member Jul 8, I don’t have the formula for the cap on me. So you need to change R1 to change the 10v output.

I’ll see if I can find it.

Datasheet «78S40»

Sep 27, 3. The L and C values are determined by Ton and Toff, which is a function of the switcher frequency, in this case the frequency is 1MHz.

If i wanted a Vout of say 20 Volts instead of the 10 what would I need to change for this to occur.

Although I’m not sure if it will switch that high Your name or email address: They are designed for that chip alone, not a generic buck converter. R2 ratio, so that there is 1. Output voltage is set by the voltage divider R1: How would I know the peak current which this is designed.? For a better experience, please enable JavaScript in your browser before proceeding.

Build Raspberry Pi Controllers: If I apply to my application I find: Forums New posts Search forums. Feb 11, 5, 1, The attached image is from the data sheet 1. Sep 7, 2, Yes, my password is: Sep 28, You May Also Like: By continuing to use this site, you are consenting to our use of cookies.


Step Down Switching Regulator | All About Circuits

Thread starter jayce Start date Jul 8, In the case of a buck, it’s max Vin, and min Vout and max Iload. Sep 27, 5. L and C values.

Hello, I want ot design a buck converter with the following dafasheet Jul 13, Boolean Identities The main identities associated with Boolean algebra are presented and discussed in detail.

Replacing a 4 pin leaded inductor with a 2 pin Started by gkmaia Yesterday at Vital knowledge for any designer. Sep 27, 1. Media New media New comments Search media.

Plus, you always have to use the worst case values. How the output voltage is calculated? Sep 27, 2.

For 20v output you would have 1. Potentiometer Questions Started by norbss Yesterday at Oct 27, 6, 1, Click here to register now. This site uses cookies to help personalise content, tailor your experience and datassheet keep you logged in if you register.