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LM27762: Negative Vout- doesn't work.

Genius 17295 points
Part Number: LM27762

Hello,

My customer is facing a problem with LM27762 Vout- output.

Now in their system, the positive Vout+ is set to 2.5V and the negative Vout- is set to -2.5V.
When VIN is 3.3V, both Vout+ and Vout- work well.
But when VIN is 5V, the negative Vout- doesn’t work while the positive Vout+ works well.
Vout- is actually various. Sometimes it is 0.3V and sometime -1.6V or -2.5V etc.

I got the schematic and would like you to check it whether there is something wrong.
Could you please assign someone? I want to send it in separate E-mail.

Regards,

Oba