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
»
unknown IC
« previous
next »
Print
Search
Pages: [
1
]
Go Down
Author
Topic: unknown IC (Read 1353 times)
0 Members and 2 Guests are viewing this topic.
david69
Regular Contributor
Posts: 93
unknown IC
«
on:
November 21, 2016, 12:42:00 pm »
Hi, I could not look for IC /SOT-23-5?/ in switching supply.
The SMD mark code is 17 5T 53 or C9, but I think that is not
LDO? The chip controlls optocupler in feedback, thanks for any
idea David
Logged
daddario
Regular Contributor
Posts: 59
Country:
Re: unknown IC
«
Reply #1 on:
November 22, 2016, 10:04:02 pm »
Pinout would be helpful, but probably a TL431.
Logged
My competence in HF electronics over 30MHz rolls off 3dB/oct.
david69
Regular Contributor
Posts: 93
Re: unknown IC
«
Reply #2 on:
November 23, 2016, 12:18:03 pm »
partly scheme, IC control optocupler diode in power source
Logged
Print
Search
Pages: [
1
]
Go Up
« previous
next »
Share me
Smf
EEVblog Electronics Community Forum
»
Electronics
»
Repair
»
unknown IC
There was an error while thanking
Thanking...
EEVblog Main Site
EEVblog on Youtube
EEVblog on Twitter
EEVblog on Facebook
EEVblog on Odysee