qm4003s.pdf datasheet:

QM4003S P-Ch 40V Fast Switching MOSFETsGeneral Description Product SummeryThe QM4003S is the highest performance trench P-ch MOSFETs with extreme high cell density , BVDSS RDSON ID which provide excellent RDSON and gate charge -40V 32m -8.6Afor most of the synchronous buck converter applications . Applications The QM4003S meet the RoHS and Green Product requirement , 100% EAS guaranteed with full High Frequency Point-of-Load Synchronous function reliability approved. Buck Converter for MB/NB/UMPC/VGA Networking DC-DC Power System Features Load Switch Advanced high cell density Trench technology SOP8 Pin Configuration Super Low Gate Charge DDD Excellent CdV/dt effect decline D 100% EAS Guaranteed Green Device Available G SSSAbsolute Maximum Ratings Symbol Parameter Rating Units VDS Drain-Source Voltage -40 V