UCL2300 Datasheet, PDF (1/5 Pages) Unisonic Technologies – PSR SINGLE-STAGE APFC OFFLINE LED DRIVER

UNISONIC TECHNOLOGIES CO., LTD
UCL2300
Preliminary
LINEAR INTEGRATED CIRCUIT
PSR SINGLE-STAGE APFC
OFFLINE LED DRIVER
 DESCRIPTION
The UTC 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. Operating in critical conduction mode,
the power MOSFET switching loss is reduced and the inductor is
fully utilized.
The UTC UCL2300 adopts proprietary primary side current
sensing scheme. 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, V_CC over voltage protection, V_CC under
voltage protection, CS resistor open protection and cycle by cycle
current limit. All the protection functions are auto-recovery.
 FEATURES
* Single-stage active PFC for high power factor and low THD
* Primary side control constant current operation, No
opto-coupler required
* Ultrafast LED start (<200ms @85V)
* ±3% LED current accuracy
* Excellent line and load regulation
* Critical conduction mode operation
* Source driving method
* Ultra-low (20μA) startup current
 ORDERING INFORMATION
* Ultra-low (300μA) Operating current
* High resistance feedback resistor for improved
efficiency
* LED open and short circuit protection
* CS resistor open and short circuit protection
* Transformer saturation protection
* Cycle-by-cycle current limit
* V_CC over-voltage and under-voltage protection
* Auto fault recovery
Ordering Number
UCL2300G-S08-R
Package
SOP-8
Packing
Tape Reel
www.unisonic.com.tw
Copyright © 2014 Unisonic Technologies Co., Ltd
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