LM2940DT-5.0 LM2940DTX-3.3 LM2940DTX-5.0 LM2940ES-12 LM2940G-10-AA3-R LM2940G-12V-AA3-R LM2940G-15-AA3-R LM2940G-5.0 LM2940G-5.0V LM2940G-50-AA3-R