BQ29414PWR TS12001-C021DFNR S-8254AAWFT-TB-U UCC3957M-2G4 MAX6442KAEHTD3+T MAX6442KAMSSD3+T BQ29415DCTR TS12001-C023DFNR S-8254AAXFT-TB-G UCC3957M-3G4 MAX6442KAEHTD7+T MAX6442KAMSTD3+T BQ29415PWR TS12001-C024DFNR S-8254AAYFT-TB-U UCC3957M-4G4 MAX6442KAEHSD3+T MAX6442KAMSSD7+T MAX6782TEA+T S-8254AAZFT-TB-G