LM2576TB-12 LM2576TB-12/LB LM2576TB-15 LM2576TB-15/LB LM2576TB-3.3 LM2576TB-3.3/LB LM2576TB-5.0 LM2576TB-5.0/LB LM2576TB-ADJ LM2576TB-ADJ/LB