IC identification TSOP6/SOT23-6/SC74 - Page 1
Forum section: electronics / beginners

author: Nikan
author_rank: Regular Contributor
timestamp: September 14, 2021, 10:14:22 pm
content: So....I have a part I need to identify It seems to be analog but I can't figure out what this device is.5 of them are on the pcb and all made a dead short to ground. The short was gone after desoldering these 5 chips and a USB 3.0 distribution ic.Markings on the device:AG02 16 // I think the 16 stands for the production year but I am not sure.Package size:TSOP6/SOT23-6/SC74 // or somewhere around there.Fixed values:Pin 2 / GNDPin 5 / VCC // 4.7V measuredPin 1, 3, 4, 6 button connections // input and output at the same time?!?These pads (1,3,4,6) all measure 2.5V when no buttons are pressed.Pin 1: // 3 buttons are connected to the unknown IC via a resistor network.Button 1 pressed = 0.4VButton 2 pressed = 1.4VButton 3 pressed = 2VPin 3: // 4 buttons are connected to the unknown IC via a resistor network.Button 1 pressed = 0.4VButton 2 pressed = 0.8VButton 3 pressed = 1.4VButton 4 pressed = 2VPin 4: // 1 button is connected to the unknown ICButton 1 pressed = 0VButton 1 not pressed around 14K to groundButton 1 pressed around 100Ohm to groundPin 6: // 1 button is connected to the unknown ICButton 1 pressed = 0VButton 1 not pressed around 14K to groundButton 1 pressed around 100Ohm to groundWhat kind of device is this???I am guessing that one of the single button pads is the output. One of them is the power on button if I am not mistaken.Thanks in advance and best regards from Germany!

author: Nikan
author_rank: Regular Contributor
timestamp: September 14, 2021, 10:16:40 pm
content: BTW, the device on the picture is connected to a single SMD RGB LED via pin 1, 3 and 6. So I am guessing that pin 4 is the output?!?

author: amyk
author_rank: Super Contributor
timestamp: September 14, 2021, 11:59:51 pm
content: AOZ8902CIL

author: Nikan
author_rank: Regular Contributor
timestamp: September 15, 2021, 12:15:52 am
content: Quote from: amyk on September 14, 2021, 11:59:51 pmAre you sure it is this chip?If so, how did you find out it is exactly this part?Thank you very much. I was looking for this part for a while now!

author: amyk
author_rank: Super Contributor
timestamp: September 15, 2021, 03:42:35 am
content: Look at images from sellers who are selling this part.

author: Nikan
author_rank: Regular Contributor
timestamp: September 28, 2021, 07:04:01 am
content: Quote from: amyk on September 15, 2021, 03:42:35 amI've ordered this part and they finally arrived. After soldering them onto the board everything worked again!Thank you very much! 😁May I ask you how you came to the conclusion that it is this part? I know, they have the same marking... But how did you find out about this in the first place?I mean I've Googled this marking over and over with different minor changes but I never came across anything similar!Again thank you very much! 😁

author: amyk
author_rank: Super Contributor
timestamp: September 28, 2021, 01:28:23 pm
content: Search for sot23-6 AGxx

author: Nikan
author_rank: Regular Contributor
timestamp: October 18, 2021, 12:40:43 am
content: Quote from: amyk on September 28, 2021, 01:28:23 pmThank you very much