What is a led driver, high power led, LED driver IC, LED Controllers

 100 - 277Vac, 29.4W, 350 - 700mA, 28-42V, [0-10V, TRI...], IP20 LED Driver

https://www.futureelectronics.com/p/semiconductors--Led-lighting-components--led-driver-modules-rev--constant-current-acdc-led-drivers/psb30w-0700-42-erp-power-2119366