IC identification JBL Boombox 2

[seb68]

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

[R_J]

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.

[seb68]

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

[R_J]

Is the top mark |BCSB, it might be a Monolithic Power Systems dc-dc step-down
for example, here is a MP1495DJ marked |ACSF

[seb68]

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

[SMDFlea]

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

[R_J]

Originally Posted by Williamhenry19

exactly!

If you quote me don't add shit to the quote.

[SMDFlea]

Originally Posted by R_J

If you quote me don't add shit to the quote.

It was a spammer.Deleted and banned.

[seb68]

Could this fit?

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




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

[seb68]

Originally Posted by seb68

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)

[labusas]

Originally Posted by seb68

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 ?

[labusas]

SY8303AIC I mean as the closest analogue.

[seb68]

Hello,

yes it is the same and it should work

[labusas]

Please tell me how to identify Q3 3034_NSAt?

[SMDFlea]

Originally Posted by labusas

Please tell me how to identify Q3 3034_NSAt?

Where is Q3 , post some pictures

[R_J]

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,

[seb68]

I think he is talking about this component

[labusas]

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

[Goiano.sa]

I would like to know what voltage this power supply generates, 3V or 5V?

[seb68]

Several supply lines from 24 volts :

5 volts
3.3 volts

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