SPX1587AR-5.0 SPX1587AR-ADJ SPX1587AR-L SPX1587AR-L 电源IC SPX1587AR-L/TR SPX1587AR-L-1.5 SPX1587AR-L-2.5 SPX1587AR-L-2-5/TR SPX1587AR-L-3.3 SPX1587AR-L-3.3/TR