LED DRIVER CONTROLLER

DESCRIPTION

Featured Device, UTC UL24U, is a PWM controller with

innovative technology. The controller drives a strings of LEDs and

can be dimming by an ON/OFF AC wall switch and provides a cost

effective  solution  for  light  control.  It  supports

power-factor-correction function in applications.

UTC UL24U provides several protection features. It includes a

cycle-by-cycle current limit to the power switch; over-current

protection at the LED load; V DD over-voltage protection. The

controller also features an internal over-temperature protection.

FEATURES

* Using ON/OFF wall switch to dimming

* High power factor for high brightness LEDs

* Low start-up current and operating current

* Under-voltage lockout (UVLO) with hysteresis

* Provides complete protection functions

-Maximum gate driver output clamp

-V DD pin Over-Voltage Protection

-Cycle-by-cycle current limit

-LEDs Over-Current Protection

-LEDs Open-Loop Protection

-LEDs Short-Circuit Protection

-Internal Over-Temperature Protection