(Telecompaper) Mobile chipmaker ST-Ericsson's president and CEO, Didier Lamouche, has resigned from the company effective 31 March to pursue other opportunities. Lamouche joined ST-Ericsson in December 2011 from STMicroelectronics, when his operational role as ST's COO was suspended. He is also resigning from ST at the end of March. ST-Ericsson chairman Hans Vestberg said "Didier Lamouche came into ST-Ericsson when the company was in a very challenging situation and has been instrumental in bringing the company to the point where it is more focused on strategy execution, a much lower breakeven point and positive momentum where the new LTE modem-based products are ready for market introduction this year". The company did not say who would take over from Lamouche.