SY8286RAC << nm-b701 ( DONOR BOARD) i found this on lenovo legion
SY8288RAC <<LA-J871P shorted 1v pch rail.. upon replacing pch.. short still not removed.. upon removing this regulator shorts gone.. but I don't have this ic
are they compatible? acer didn't even used a syllergy IC some new kinds of regulator
Attached Files
The
SY8286RAC and
SY8288RAC are both switching regulators from SILERGY, but they are not necessarily interchangeable because their internal specifications may vary slightly in terms of output voltage, current rating, or control features. It's important to consider these parameters before attempting a replacement.
Here’s a breakdown of both ICs:
- SY8286RAC: Typically, this is used as a synchronous buck converter with fixed or adjustable output, designed for powering various rails in laptops and similar devices.
- SY8288RAC: This is also a synchronous buck converter but may have different current or voltage specifications compared to the SY8286RAC, even though they come from the same manufacturer.
If the
SY8288RAC regulates a critical power rail like the 1V PCH rail, using a slightly different IC (like the SY8286RAC) could lead to improper voltage regulation, potentially damaging components further.
Since you mentioned that the
short disappeared when you removed the
SY8288RAC, it likely means that the IC was the cause of the issue. However, substituting it with the SY8286RAC without carefully checking compatibility could be risky.
What you can do:
- Compare the datasheets for both ICs to check for key parameters like voltage rating, current capacity, switching frequency, and pinout.
- If they have similar or identical specifications, you could attempt the replacement. However, if they are too different, you’ll need to find the exact match (SY8288RAC or equivalent).
- For cases where Acer is using a non-SILERGY regulator, you'd need to match the critical specs (output voltage, current capability, and control mode) of that new regulator with a suitable replacement.
Let me know if you need help reviewing the datasheets!
