Magic „JFN8-1“ IC - IC Identification

[eevblogger88]

I‘m searching for weeks now and haven’t found a answer.

Goal:

Identification of this IC:

JFN8-1 GA167003

What it does:

If you press the button, it generates a „buzzing“ sound to the 8 ohm 0,25w speaker for 2 seconds. (Not longer even if you hold the button longer)

It is driven by 2x 1,5V batteries in series = 3 V

If the button is pressed, 4 LEDs are turning on for 2 seconds as well.

More informations:

I‘m stunned that this one chip acts as a MCU, DAC and AMP all in one. I thought it is maybe a low powered (3V) 555 chip and the buzzing sound is generated through electricity like in this video: https://youtube.com/shorts/ip5h3PaBz_4

But it wouldn’t stop after 2 seconds if I’m right. So that could only be part of the answer.

I know I could recreate this circuit with a MCU like RP2040 & AMP & DAC like the Max98357, but that would be a couple of times more expensive. And a normal „piezo buzzer“ doesnt have enough quality.

That’s why I would like to know what this „magical“ IC is and how somebody can recreate a cheap circuit like that. (Buzzer sound with real 0,25w speaker & LEDs)

Thank you in advance for your time!

[barshatriplee]

I think it's an 8-pin audio amplifier IC. The outlook is a bit similar to this: https://components101.com/ics/XPT8871-audio-amplifier-ic-pinout-datasheet-circuit