LED DRIVER WITH AVERAGE-MODE CONSTANT CURRENT CONTROL

DESCRIPTION

The UCL5108 is an average current mode control LED driver IC
operating in a constant off-time mode. UCL5108 does not produce a
peak-to-average error, and therefore greatly improves accuracy,line and
load regulation of the LED current without any need for loop
compensation or high-side current sensing. The output LED current
accuracy is ±2%. The UCL5108 can be powered from an 8.0 - 100V
supply. PWM & Linear dimming input is provided that accepts an
external control TTL compatible signal. The output current can be
programmed by an internal 250mV reference.
 

FEATURES

* Fast Average Current Control
* Internal 8 to 100V Linear Regulator
* Linear and PWM Dimming Capability
* Output Short Circuit Protection with Skip Mode
* Requires Few External Components for Operation