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Offline GonziniTopic starter

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IC Identification
« on: March 16, 2023, 11:56:04 pm »
Hi guys.
Anyone know what U4 might be in the attached pics? I read A3901 which comes up as a dual full-bridge motor driver which doesn't seem to make sense in this application. Also the track layout doesn't stack up to be one of those from what i see. I know these IC's can be used for other applications, but just seems a bit out there.
Board is out of some music gear which the audio outputs  fail, its a common problem with them.
Its part of the power supply, looks like a split supply going by the PCB layout. You would think it would be a regulator or switching mosfet maybe.
Cheers
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Offline amyk

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Re: IC Identification
« Reply #1 on: March 17, 2023, 12:08:53 am »
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Offline fzabkar

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Re: IC Identification
« Reply #2 on: March 17, 2023, 01:04:36 am »
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Offline GonziniTopic starter

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Re: IC Identification
« Reply #3 on: March 17, 2023, 05:26:31 pm »
Cheers guys, makes sense now :)
That was exactly what i was expecting it to be. I'm not used to these devices so a bit hard to track the full part No. down if you don't know!
 :)
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