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TPS61165: Reg. TPS61165 Power supply problem

Part Number: TPS61165

Dear Team,

We are under developing one 5 inch TFT cluster Project,

and its backlight are 6series and 3 parallel for the backlight LED. Kindly find the attachment.

And we have enclosed also schematic diagram also, our LCD backlight will glow at 18V(VLED+) but did't get this voltage but we get only 5V,

What can i do..Kindly let me know,

Vin-5V

Vout-we need 18V but it comes 5V

CTRL pin has a 3.3V.

Kindly check and let me know.

am waiting for your reply.

 

Thanks,

Suman Subburaj.