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, 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. 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 * 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 * VCC over-voltage and under-voltage protection * Auto fault recovery ORDERING INFORMATION Ordering Number UCL2300G-S08-R www.unisonic.com.tw Copyright © 2014 Unisonic Technologies Co., Ltd Package SOP-8 Packing Tape Reel 1 of 5 QW-R125-034.a UCL2300 Preliminary MARKING PIN CONFIGURATION CS 1 8 OUT GND 2 7 ST COMP 3 6 VCC LN 4 5 FB PIN DESCRIPTION PIN NO. 1 2 3 4 5 6 7 8 LINEAR INTEGRATED CIRCUIT PIN NAME CS GND COMP LN FB VCC ST OUT DESCRIPTION Current sense pin. Connect a resistor to GND to sense the power MOSFET current. Ground. Loop compensation node. Line voltage sample input. Feedback voltage input Pin. Power supply pin. Chip enable pin. Pulse out pin. Connected to the ‘Source’ of external power MOSFET. BLOCK DIAGRAM UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 5 QW-R125-034.a UCL2300 Preliminary LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT VCC Pin Input Voltage VCC -0.3~22 V Current Sense Pin Input Voltage CS -0.3~6 V Compensation Pin Voltage COMP -0.3~6 V Line Voltage Sample Input LN -0.3~6 V Feedback Pin Input Voltage FB -0.3~6 V ST Pin Maximum Supply Current IST_MAX 5 mA External Power MOSFET Drive Voltage OUT -0.3~18 V Maximum Work Current of Internal Power MOSFET IOUT 3 A Power Dissipation (Note 1) PDMAX 0.45 W Junction to Ambient θJA 145 °C/W Junction Temperature TJ -40~+150 °C Storage Temperature TSTG -55~+150 °C Notes: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. 2. The maximum power dissipation decrease if temperature rise, it is decided by TJMAX, θJA, and environment temperature (TA). The maximum power dissipation is the lower one between PDMAX=(TJMAX-TA)/ θJA and the number listed in the maximum table. RECOMMENDED OPERATION CONDITIONS PARAMETER Power Supply Voltage UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw SYMBOL VCC RATINGS 11.5~17.5 UNIT V 3 of 5 QW-R125-034.a UCL2300 Preliminary LINEAR INTEGRATED CIRCUIT ELECTRICAL CHARACTERISTICS (Notes 1, 2) (Unless otherwise specified, VCC=14V and TA=25°C) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Startup Voltage VST Startup Voltage VST_ON 1mA, VCC=10V 16 17 18 V VST Hysteresis Voltage VST_HYS VCC=14V 2 V ST Startup Current IST_ON VCC=10V 20 35 μA ST Operating Current IST_OP VCC=14V 35 60 μA Supply Voltage Section VCC Startup Voltage VCC_ON VCC Rising 10 11 12 V VCC Undervoltage Protection Threshold VCC_UVLO VCC Falling 5.2 5.8 6.5 V VCC Hold Voltage VCC_HOLD VCC Falling 7 7.5 8 V VCC Turn Off Current ICC_UVLO VCC Rising, VCC=10V 40 70 μA VCC Quiescent Current IQ No Switch, VCC=14V 320 600 μA VCC Operating Current ICC FOP=60kHz 300 μA VCC Over Voltage Protection Threshold VCC_OVP 21 V FB Feedback FB Falling Edge Threshold Voltage VFB_FALL FB Falling 0.4 V FB Hysteresis Voltage VFB_HYS FB Rising 0.6 V FB Over Voltage Protection Threshold VFB_OVP 5.5 V Minimum Off Time TOFF_MIN 4.0 μs Maximum Off Time TOFF_MAX 90 μs Current Sense Section Leading Edge Blanking Time for Current Sense TLEB_CS 350 ns Switch off Delay Time TDELAY 180 ns Loop Compensation Internal Reference Voltage VREF 0.294 0.300 0.306 V COMP Low Clamp Voltage VCOMP_LO 1.5 V COMP Linear Operating Voltage Range VCOMP 1.5 3.5 V COMP Protection Threshold VCOMP_OVP 4.5 V Linear Voltage Sampling LN Linear Working Range VLN 0 2.5 V Driver Stage Internal Tube Driven MOS Resistance RDS_ON VCC=14V 1200 mΩ Notes: 1. Production testing of the chip is performed at 25°C. 2. The maximum and minimum parameters specified are guaranteed by test, the typical value are guaranteed by design, characterization and statistical analysis UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 5 QW-R125-034.a UCL2300 Preliminary LINEAR INTEGRATED CIRCUIT TYPICAL APPLICATION CIRCUIT ES20 750kΩ 910kΩ 1nF 180kΩ 750kΩ NP NS 16.5V/0.6A 470μF 1N4007 220nF 910kΩ 100nF AC UTC UCL2300 90~264V 4 LN ST 7 1 CS OUT 8 3 COMP VCC 6 1μF 0.82Ω 12kΩ 2 GND FB 5 4N60 4.7μF 330kΩ NA BAS21 180kΩ UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 5 QW-R125-034.a