Looking for IC that can give stable negative power ?

As mentioned . I am looking for IC that can give stable negative power without 7660 because of it's instability. Thank you !

Not sure what you mean by instability. If you mean unregulated, there are many other charge pump ICs from Linear Technology and Maxim, and some of them have on-board regulators.

Your question is missing many (All?) details.
What is the input positive voltage?
What is the output negative voltage?
What is the output current?

ak

Agreed! The ICL7660 is a great little device... If you are trying to get more than a couple of mA's out then the datasheet advises using 100uf caps instead of the normal 10uf... Some of the LTCxxx charge pumps will go as high as 100mA.