LM2940-3.3 LM2940-5 LM2940-5.0 LM2940-5.0 MDE LM2940-5.0-MW8 LM2940-5.0V LM2940-5.0VT/R LM2940-50CKCSE3 LM2940-50IKCSE3 LM29405-5.0