Donor IC question?

[roxboy1984]

Hi Guys, I have a Dell XPS 13” laptop that I'm trying to repair. If I look at the board with a thermal cam. The following component “3W=Q2W” which looks like a voltage regulator is getting very hot. So my question is. Can I swop it out with this one. “K2L31”? I can't seem to find any data sheets. Please see pics for reference. Thanks for any help or advice.

[mon2]

No, not till there is 100% confirmation that they are the same form, fit and function. So far, only know that they are the same sot23-5 package.

Which exact Dell model are you reviewing?

'3W=' = Richtek.

[roxboy1984]

No, not till there is 100% confirmation that they are the same form, fit and function. So far, only know that they are the same sot23-5 package.

Which exact Dell model are you reviewing?

'3W=' = Richtek.

Thanks so much as always for your help. The two models that I have are attached. The one that I'm trying to repair is the 9360.

[mon2]

See attached. Part reference is PU202.

Part # RT9069-33GB

https://www.digikey.ca/en/products/d...9-33GB/5270908


You should be able to source replacements from other vendors. Is a simple 3v3 LDO. Confirm the pinout and max current support against the original by Richtek.

[mcplslg123]

First you should remove the part and measure resistance to GND on output pin before proceeding for replacement.

[roxboy1984]

See attached. Part reference is PU202.

Part # RT9069-33GB

https://www.digikey.ca/en/products/d...9-33GB/5270908


You should be able to source replacements from other vendors. Is a simple 3v3 LDO. Confirm the pinout and max current support against the original by Richtek.

Do you by chance know the Vendor of the "K2L31" ? or possibly have a boardview for the LA-H931P?

[mon2]

Hi. No, the 2 parts are not the same.

The original component on the board is a 3v3 LDO which is capable of accepting a rather high voltage as the input and output the 3v3 voltage rail.

The component you have with the 'K2' prefix is a USB load switch which acts like a solid state relay. The reference datasheet for the 'K2' component is available here:

https://datasheet.lcsc.com/lcsc/2111...0_C2919834.pdf

BV for XPS9360? Yes, have it but is marked as 'LA-D841P'. It was used to identify the PU202 component. Will post it in the schematic forum once at the office if still of interest. The LA-D841P BV file may already be available in the schematic forum.