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Old 03-20-2022, 10:48 AM   #1
seb68
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Default IC identification JBL Boombox 2

Hello,
Can anyone identify this component?
This is a regulator that receives 24 volts input (pin 5)
Ground : pin 3 and 4






Red Circles on the Picture 3: location of IC (same)


Thank you for your time spent helping
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Old 03-20-2022, 11:31 AM   #2
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Default Re: IC identification JBL Boombox 2

There is another ic to the left of U21, looks like a similar circuit, does it have the same number? or is it different? post it's picture if it is different.
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Old 03-20-2022, 02:03 PM   #3
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Default Re: IC identification JBL Boombox 2

1 : IC burn must be changed
2 and 3 : IC same as number 1

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Old 03-20-2022, 02:19 PM   #4
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Default Re: IC identification JBL Boombox 2

Is the top mark |BCSB, it might be a Monolithic Power Systems dc-dc step-down
for example, here is a MP1495DJ marked |ACSF
Attached Images
File Type: jpg mp1495dj-lf-z-tsot-23-8.jpg (38.9 KB, 21 views)

Last edited by R_J; 03-20-2022 at 02:35 PM..
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Old 03-21-2022, 04:28 AM   #5
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Default Re: IC identification JBL Boombox 2

You are not far from the truth.
But i have not found with this top marking any mps.
Top Mark : BCSB
Code product : BCS
B : year code
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Old 03-21-2022, 05:20 AM   #6
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Default Re: IC identification JBL Boombox 2

If that first character is a lower case b it could be a custom silergy part.

As an example,the SY8088I (SOT23-5) has the Top Mark: bPxyz (device code: bP, x=year code, y=week code, z= lot number code
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Old 03-22-2022, 08:25 PM   #7
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Default Re: IC identification JBL Boombox 2

Quote:
Originally Posted by Williamhenry19 View Post
exactly!
If you quote me don't add shit to the quote.
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Old 03-23-2022, 05:40 AM   #8
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Default Re: IC identification JBL Boombox 2

Quote:
Originally Posted by R_J View Post
If you quote me don't add shit to the quote.
It was a spammer.Deleted and banned.
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Old 04-03-2022, 03:05 PM   #9
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Default Re: IC identification JBL Boombox 2

Could this fit?

https://www.silergy.com/productsview/sy21154aic




On the circuit :
Input : 24 volts pin 5
Ground : pin 3 and 4

Last edited by seb68; 04-03-2022 at 03:09 PM..
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Old 04-04-2022, 03:14 AM   #10
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Default Re: IC identification JBL Boombox 2

Quote:
Originally Posted by seb68 View Post
Could this fit?

https://www.silergy.com/productsview/sy21154aic




On the board :
Input : 24 volts pin 5
Ground : pin 3 and 4

Outpout : pin 6 (LX) (there is a coil in the circuit)
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Old 05-19-2022, 01:50 AM   #11
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Default Re: IC identification JBL Boombox 2

Quote:
Originally Posted by seb68 View Post
Could this fit?

https://www.silergy.com/productsview/sy21154aic




On the circuit :
Input : 24 volts pin 5
Ground : pin 3 and 4
This one also seems to fit SY8303AIC ?
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Old 05-19-2022, 02:06 AM   #12
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Default Re: IC identification JBL Boombox 2

SY8303AIC I mean as the closest analogue.
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Old 05-19-2022, 06:59 AM   #13
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Default Re: IC identification JBL Boombox 2

Hello,

yes it is the same and it should work
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Old 05-26-2022, 05:20 AM   #14
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Default Re: IC identification JBL Boombox 2

Please tell me how to identify Q3 3034_NSAt?
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Old 05-26-2022, 06:46 AM   #15
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Default Re: IC identification JBL Boombox 2

Quote:
Originally Posted by labusas View Post
Please tell me how to identify Q3 3034_NSAt?
Where is Q3 , post some pictures
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Old 05-26-2022, 10:12 AM   #16
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Default Re: IC identification JBL Boombox 2

Q3 is in post #3 on the right side of the picture (next to the glue) It looks like a DFN8 3034 seems to be the part number,

Last edited by R_J; 05-26-2022 at 10:16 AM..
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Old 05-29-2022, 08:33 AM   #17
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Default Re: IC identification JBL Boombox 2



I think he is talking about this component
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Old 05-30-2022, 06:54 AM   #18
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Default Re: IC identification JBL Boombox 2

Thanks seb68 for the picture.
Yes. Exactly this one.

Last edited by labusas; 05-30-2022 at 07:15 AM..
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Old 05-31-2022, 11:12 AM   #19
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Default Re: IC identification JBL Boombox 2

I would like to know what voltage this power supply generates, 3V or 5V?
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Old 06-10-2022, 07:33 AM   #20
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Default Re: IC identification JBL Boombox 2

Several supply lines from 24 volts :

5 volts
3.3 volts

maybe 1.2volts and 12volts but i don't remember.
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