LM4040AEX3-2.1+ LM4040AEX3-2.1+T LM4040AEX3-2.1-T LM4040AEX3-2.5 LM4040AEX3-2.5+ LM4040AEX3-2.5+T LM4040AEX3-2.5-T LM4040AEX3-3 LM4040AEX3-3.0 LM4040AEX3-3.0/V+T