EEVblog Electronics Community Forum
A Free & Open Forum For Electronics Enthusiasts & Professionals
Welcome,
Guest
. Please
login
or
register
.
Did you miss your
activation email
?
1 Hour
1 Day
1 Week
1 Month
Forever
Login with username, password and session length
This topic
This board
Entire forum
Google
Bing
Home
Help
Search
About us
Links
Login
Register
EEVblog Electronics Community Forum
»
Electronics
»
Repair
»
5-pin SOT Voltage regulator TRDEC
« previous
next »
Print
Search
Pages: [
1
]
Go Down
Author
Topic: 5-pin SOT Voltage regulator TRDEC (Read 524 times)
0 Members and 1 Guest are viewing this topic.
cybermaus
Frequent Contributor
Posts: 674
Country:
5-pin SOT Voltage regulator TRDEC
«
on:
January 28, 2022, 08:11:19 am »
I know there are some website where you can look up those 3 and 5 letter codes, seen them before, but I cannot find them anywhere (should have book marked them)
Anyone knows which voltage regulator this is, or where to find those reference list websites?
Many thanks.
Additional info:
- Probably regulates from 5V to 3.3V
- It burns when you feed it 12V
- 1.5mm x 2.5mm in size (those stripes are half mm)
Logged
Audiorepair
Frequent Contributor
Posts: 700
Country:
Re: 5-pin SOT Voltage regulator TRDEC
«
Reply #1 on:
January 28, 2022, 12:37:07 pm »
fzabkar provided me this link a couple of days ago, seems a good resource.
http://www.smdmark.com/en-US/search/code?id=DEC
Logged
cybermaus
Frequent Contributor
Posts: 674
Country:
Re: 5-pin SOT Voltage regulator TRDEC
«
Reply #2 on:
January 28, 2022, 12:47:55 pm »
Thanks yes, sort of like that.
Though the one I remember, you could filter on both package (pins) and the 3-letter code.
And was not specific to a supply house. If only I had bookmarked it.
Anyway, thanks. Alas, I could find it on that list.
Logged
fzabkar
Super Contributor
Posts: 2263
Country:
Re: 5-pin SOT Voltage regulator TRDEC
«
Reply #3 on:
January 29, 2022, 06:20:08 am »
These appear to be pin compatible step-down converters. You need to match the feedback voltage, switching frequency, and max Vin. The size of the inductor would be a guide to the switching frequency and output current. Compare it against the inductors in the application circuits in the datasheets.
http://file2.dzsc.com/product/17/10/16/1129211_103315937.pdf
https://www.maxlinear.com/Files/Documents/SP6669_DS_RevC.pdf
https://datasheet.lcsc.com/szlcsc/1903011605_JoulWatt-Tech-JW5222_C371424.pdf
http://www.broadchip.com/Public/Uploads/uploadfile/files/20210402/BCT1814.pdf
http://www.broadchip.com/Public/Uploads/uploadfile/files/20210402/BCT1812.pdf
There are plenty of other possible candidates:
https://ipv4.google.com/search?q=filetype%3Adoc+OR+filetype%3Apdf+%22absolute+maximum%22+%22sot23-5%22+converter+%22step+down%22+OR+stepdown
I would look for a compatible part from makers such as Monolithic Power, TI, On Semiconductor, STMicroelectronics, Vishay, Richtek. The pinout seems to be very common.
If you can determine the values of feedback resistors R39 and R40, then you should be able to calculate the feedback voltage, assuming that Vout is +3.3V.
«
Last Edit: January 29, 2022, 06:39:27 am by fzabkar
»
Logged
The following users thanked this post:
cybermaus
Print
Search
Pages: [
1
]
Go Up
« previous
next »
Share me
Smf
EEVblog Electronics Community Forum
»
Electronics
»
Repair
»
5-pin SOT Voltage regulator TRDEC
There was an error while thanking
Thanking...
EEVblog Main Site
EEVblog on Youtube
EEVblog on Twitter
EEVblog on Facebook
EEVblog on Odysee