SPX1587AT-5.0 SPX1587AT-ADJ SPX1587AT-L SPX1587AT-L 电源IC SPX1587AT-L/MTR SPX1587AT-L/TR SPX1587AT-L-1.5 SPX1587AT-L-1.5/TR SPX1587AT-L-1.8/TR SPX1587AT-L-1-8