TPSM82912: Complemetary part required

Part Number: TPSM82912

Tool/software:

Dear Sir

I have to use TPSM82912/3 in my design and also i need module for nrgative voltage like this part for +2.5V 500mA load

Can you suggest the any part no that can be used for negative voltage -2.5V 500mA output.

The input voltage range is from 8VDC to 20 VDC nominal voltage is 18VDC