IC identification TSOP6/SOT23-6/SC74

[Nikan]

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 / GND
Pin 5 / VCC // 4.7V measured

Pin 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 = 0.4V
Button 2 pressed = 1.4V
Button 3 pressed = 2V

Pin 3: // 4 buttons are connected to the unknown IC via a resistor network.
Button 1 pressed = 0.4V
Button 2 pressed = 0.8V
Button 3 pressed = 1.4V
Button 4 pressed = 2V

Pin 4: // 1 button is connected to the unknown IC
Button 1 pressed = 0V
Button 1 not pressed around 14K to ground
Button 1 pressed around 100Ohm to ground

Pin 6: // 1 button is connected to the unknown IC
Button 1 pressed = 0V
Button 1 not pressed around 14K to ground
Button 1 pressed around 100Ohm to ground


What 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!

[Nikan]

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?!?

[amyk]

AOZ8902CIL

[Nikan]

AOZ8902CIL

Are 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!

[amyk]

Look at images from sellers who are selling this part.

[Nikan]

Look at images from sellers who are selling this part.

I'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! 😁

[amyk]

Search for sot23-6 AGxx

[Nikan]

Search for sot23-6 AGxx

Thank you very much