TAIPEI, Sept 21 (Reuters) - Taiwan's central bank kept its policy rate unchanged as expected on Thursday, as inflationary pressures ease but the export-driven economy faces weak global demand.

The central bank left the rate at 1.875%, where it has stood since March.

All economists in a Reuters poll had predicted the central bank would keep rates on hold.

(Reporting by Liang-sa Loh and Faith Hung; Writing by Ben Blanchard; Editing by Jacqueline Wong)