Help to find this pwm controller

[wawinfo]

Can someone help me find the correct part number or at least similar datasheet?
The code written on chip is "1F2=C1Z"

[wraper]

R7732LGE https://www.richtek.com/assets/product_file/R7732/R7732-01.pdf Actual device code is IF2= (page 2)

[fzabkar]

I think the code is F2=. The leading marking appears to be a vertical line.

http://markingcodes.com/search/c/f2%3D

[wraper]

I think the code is F2=. The leading marking appears to be a vertical line.

http://markingcodes.com/search/c/f2%3D

It's a vertical bar but it's actually a part of a part number marking, and R7732LGE actually has |F2=marking which is a bit unusual for Richtek as in 99% of cases their ICs have 3 or 2 symbol marking. F2= that website shows for it is incorrect. Neither Richtek puts vertical lines on their ICs to mark orientation, they put a small triangle in the corner of pin 1.

[fzabkar]

I think the code is F2=. The leading marking appears to be a vertical line.

http://markingcodes.com/search/c/f2%3D

It's a vertical bar but it's actually a part of a part number marking, and R7732LGE actually has |F2=marking which is a bit unusual for Richtek as in 99% of cases their ICs have 3 or 2 symbol marking. F2= that website shows for it is incorrect. Neither Richtek puts vertical lines on their ICs to mark orientation, they put a small triangle in the corner of pin 1.

Richtek's own documentation is confusing.

This photo of an R7731AGE has a vertical line (|DP=):

https://ae01.alicdn.com/kf/Hb52f2df9b55b4f0199511cedf37a0c18O/5-R7731AGE-R7731AG-R7731A-R7731-DP-IDP-SOT-23-6.jpg

This document assigns a product code of "DP=" to the IC:

https://www.rom.by/files/Richtek_Marking_Code.PDF

The datasheet, however, states that "IDP= : Product Code":

https://file.elecfans.com/web2/M00/05/54/pYYBAGDezJGAG4dsAAWHhTHwRhk477.pdf

[t1d]

Are you sure the part is defective? It sure looks like a bad solder joint on the top left pin, as oriented in the picture. Maybe re-solder (aka "reflow") all of the pins? HTH.