I took my old Sony XM-2020 car audio amp apart and was surprised to find what appears to be a LM-3886 style 11 pin chip amp clamped between an intermediate heat sink and a clamp plate. There are two of them (I presume in parallel to allow 4ohm operation). The amp is marked 20 to 20 kHz 0.5% THD 20 watts rms. I power it with a 19 volt smps brick from a laptop (yes, exceeds 16 volt rating of caps) but it works fine and gets me close to 30 watts I think - not that I ever run it more than 10 watts. Here are photos of the top side and underside. You can see the two flat black chips at the top edge of the board where the intermediate heat sink clamps to the finned case. This amp actually sounds really nice for a class AB. In a comparison with my class D TI TPA3116D2, it is close but lacks the detail and sparkle on the top end, and the bass isn't quite as deep. But overall, a very nice amp for full range drivers. If anyone can tell me what the chips are that would be appreciated. Does Sony make their own or are they using another manufacturer's chip?
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Greetings.
I did a quick search in Digikey for 11 pin to-220
Invalid Request
There are a few.
ST Micro and TI
Have fun.
🙂
I did a quick search in Digikey for 11 pin to-220
Invalid Request
There are a few.
ST Micro and TI
Have fun.
🙂
Lol😀
I've got an output chip from a sony x-plod CD/MP3 head unit, it's a TA8268 which is a 4 bridged-channel amp if memory serves me right...
Yes, you think I am lazy 🙂 But alas, the clamp is soldered to the bottom of the board in addition to being screwed in place. I did not want to de solder.
Unscrew and remove back plate, bending the IC away from the front plate will reveal the part number.
It has 12 pins... I LOL'd pretty hardly...
The Chip ismarked as UPC2500H witch is pretty damn rare IC
The Datasheet: UPC2500A pdf, UPC2500A description, UPC2500A datasheets, UPC2500A view ::: ALLDATASHEET :::
The Chip ismarked as UPC2500H witch is pretty damn rare IC
The Datasheet: UPC2500A pdf, UPC2500A description, UPC2500A datasheets, UPC2500A view ::: ALLDATASHEET :::
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