I am using this part in my design to get -2.5V but I am getting -4.2V.
The EN pin is connected to Vin. The input and output capacitors are Multilayer-ceramic 10uF one on each side. I applying -5V at Vin generated by LT1964ES5-5.
Can you please let me know what could be the issue? The circuit is attached
Can you please resend a clearer photo of you schematic? Apologies I can't clearly analyze the photo that you've sent.Thanks,Alex