[SOLVED] 16x2 LCD - 3.3v modification IC?

[trastikata]

Hi,

I have some 16x2 LCDs and want to modify few of them to 3.3v specifications. The only difference between the 5v and the 3.3v version is the missing U3, C1, C2 and disconnected J1.

So any idea what U3 as indicated on the picture might be?

Thanks

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Ok, found it - U3 is 7660 voltage converter (TL7660, LMC7660, ICL7660 etc.) and the caps are 10uF.

 

[pjmelect]

R8 is also a different value.