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LM2596: Negative voltage over current-2

Part Number: LM2596

Hi Team,

Posting on behalf of our customer.

I will share this E2E post to our customer so he can reply when needed.

I tried to create a -5.0V output using the LM2596S-5.0/NOPB, but I'm having trouble. I built the circuit as shown in the datasheet, but the negative voltage isn't output.

DC input voltage : +12.0V
Taget voltage : -5.0V
Load contition : no load

When input power is applied, more than 500 mA flows, and the desired voltage is not generated. (Circuit 1)
Additionally, I tried creating a circuit like Figure 8-8 on page #14 of datasheet, but the output is +1.6V.
Thank you for your help.

Regards,

Danilo