LM2940L-5.0 LM2940L-5.0-TA3-T LM2940L-5.0V LM2940L-5.0V(TO-252) LM2940L-5.0V-AA3-R LM2940L-50-AA3-R LM2940L50AA3-R LM2940L-50-TA3 LM2940L-50-TN3-R LM2940L-50-TQ2-R