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charge pump circuit with lm2676 to get negative supply

Other Parts Discussed in Thread: LM2676

Is there any possible to add charge pump circuit with lm 2676 to get negative supply.i am generating +3.3v/0.5A from lm2676 now my circuit require negative supply -3.3v/10mA can i get from same ic. 

plz help me as soon as possible.

Regards,

Rahil.