Unisonic Technologies UCL2300
UCL2300 is a high precision primary-side regulation controller with single stage Active PFC, specially designed for universal input offline flyback or buck-boost constant current LED lighting. The controller with on-chip PFC circuit achieves high power factor and low THD. The UTC UCL2300 adopts proprietary primary side current sensing scheme.DESCRIPTION
The UTC Operating in critical conduction mode, the power MOSFET switching loss is reduced and the inductor is fully utilized. It can precisely control the LED current without secondary side sense and feedback circuits. The system size and cost are optimized, as well as the system reliability. The UTC UCL2300 utilizes patented line and load voltage compensation method to achieve excellent line and load regulation. And the line compensation factor can also be tuned externally for flexibility. The UTC UCL2300 offers rich protection functions to improve the system reliability, including LED open circuit protection, LED short circuit protection, VCC over voltage protection, VCC under voltage protection, CS resistor open protection and cycle by cycle current limit. All the protection functions are auto-recovery. SOP-8●
FEATURES
* Single-stage active PFC for high power factor and low THD * Primary side control constant current operation, No opto-coupler required * Ultrafast LED s...