APM2321 Datasheet, Anpec Electronics

Pin Description
* -20V/-0.9A , RDS(ON)=370mΩ(typ.) @ V =-4.5V GS RDS(ON)=560mΩ(typ.) @ V =-2.5V GS
* Super High Dense Cell Design for Extremely Low RD.

D GS Top View of SOT-23 S
* Power Management in Notebook Computer , Portable Equipment and Battery Powered Systems.