# Help to identify an IC

**URL:** <https://forum.digikey.com/t/help-to-identify-an-ic/34347>\
**Category:** Integrated Circuits (ICs)\
**Tags:** richtek-usa-inc, power-management-pmic, part-identification\
**Created:** [August 22, 2023, 6:32pm UTC](https://forum.digikey.com/t/help-to-identify-an-ic/34347 "2023-08-22T18:32:06Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![euhenius](https://avatars.discourse-cdn.com/v4/letter/e/54ee81/32.png) [@euhenius](https://forum.digikey.com/u/euhenius)\
**Post date:** [August 22, 2023, 6:32pm UTC](https://forum.digikey.com/t/help-to-identify-an-ic/34347/1 "2023-08-22T18:32:06Z")

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Hi everyone.  
The IC itself looks like a buck converter, coz it connected to the big inductor. It is square shape and pins on the sides are 6 x 3 x 3 x 0. After looking under different angles I’m positive that the IC marked as:  
1st line: QR=7G  
2nd line: E4E

 ![20230820_125705](https://global.discourse-cdn.com/digikey/original/3X/c/7/c7782c293e2483f52ff8183bb2058e6e5319f99e.jpeg)  
 ![20230820_130245](https://global.discourse-cdn.com/digikey/original/3X/e/3/e3bf0356e146c7f1fb2f94bdc9f8c2f58f79bfc9.jpeg)  
 ![20230820_135124](https://global.discourse-cdn.com/digikey/original/3X/5/4/5401c4ae601755d97edaeb0bcbcf6ff8fb20b4ee.jpeg)

I found similar IC on the same board (same pins, components around, etc), but marked differently, so not sure are they interchangeable or not :  
1st line: QS=7F  
2nd line: W5A

P.S. Both ICs are on the HP Pavilion 15z-eh000 motherboard, which identified as DAG7HAMB8E0 REV:E

Thanks!

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**Author:** ![Jenny\_1307](https://avatars.discourse-cdn.com/v4/letter/j/c67d28/32.png) [@Jenny\_1307](https://forum.digikey.com/u/Jenny_1307)\
**Post date:** [August 22, 2023, 7:54pm UTC](https://forum.digikey.com/t/help-to-identify-an-ic/34347/2 "2023-08-22T19:54:22Z")

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Hello euhenius - welcome to the Forum community. Unfortunately, I was unable to identify your two ICs. It’s pretty difficult without knowing the chip manufacturer. Hopefully one of my colleagues has better luck.

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**Author:** ![rick\_1976](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/rick_1976/32/1571_2.png) [@rick\_1976](https://forum.digikey.com/u/rick_1976)\
**Post date:** [August 22, 2023, 8:06pm UTC](https://forum.digikey.com/t/help-to-identify-an-ic/34347/3 "2023-08-22T20:06:59Z")

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[RT6316BGQUF](https://www.digikey.com/en/products/detail/richtek-usa-inc/RT6316BGQUF/16376703?s=N4IgTCBcDaIEoBUBsBmAjEgQgcQIoFUAxEAXQF8g) seems like a strong possibility.