UNISONIC TECHNOLOGIES CO., LTD USL1650 Preliminary LINEAR INTEGRATED CIRCUIT HIGH EFFICIENCY PWM BUCK LED DRIVER CONTROLLER DESCRIPTION The UTC USL1650 is a PWM mode step-down converter (with a high voltage power MOSFET with SOP8 package). By well regulating a constant output current. The output duty cycle of the UTC USL1650 can be up to 100% for wider input voltage application. The UTC USL1650 is available in a SOP-8 package. FEATURES * Universal input voltage range with off-line topology * Programmable constant LED current * Output LED string short protection * Output LED string open protection * Dimmable LED current by ACTL * OCP * Built-in OTP ORDERING INFORMATION Ordering Number USL1650G-S08-R USL1650G-S08-R Package SOP-8 Packing Tape Reel (1)Packing Type. (1) R: Tape Reel (2)Package Type (2) S08: SOP-8 (3)Green Package (3) G: Halogen Free and Lead Free MARKING www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd 1 of 4 QW-R125-029.c USL1650 Preliminary PIN CONFIGURATIONS PIN DESCRIPTION PIN NO. 1 2 3 4 5 6 7, 8 PIN NAME VCC VIN ACTL VC SENSE GND NC LINEAR INTEGRATED CIRCUIT DESCRIPTION Power supply. Power MOS drain. Analog dimming control. Compensation pin. LED current sense input pin. Ground of the chip. BLOCK DIAGRAM VCC 1 + - 17V/7.5V 35V SENSE 5 VC + - + - UVLO Internal Bias & Vref All Blocks VCC OK VCCOVP EN 2 VIN CC 4 Current Waveform modulation VREF + - + - R Q Driver stage R S OSC ACTL 3 Dimming Function 6 GND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 4 QW-R125-029.c USL1650 Preliminary LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Supply Input Voltage VCC 40 V GATE Voltage VGATE 14 V ACTL Voltage (Note 1) VACTL 8 V VC Voltage VVC 6 V SENSE Voltage VSENSE -0.3~6 V Power Dissipation TA=25°C PD 0.392 W Junction Temperature TJ 150 °C Storage Temperature TSTG -65~+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. If the ACTL pin is connected with a serial 1MΩ resistor, the maximum voltage can go up to 36V. RECOMMENDED OPERATING CONDITIONS (Note) PARAMETER SYMBOL RATINGS Supply Input Voltage VCC 17~32 Junction Temperature Range TJ -40~125 Note: The device is not guaranteed to function outside its operating conditions. THERMAL DATA PARAMETER Junction to Ambient UNIT V °C SYMBOL θJA RATING 225 UNIT °C/W ELECTRICAL CHARACTERISTICS (VCC=24VDC, TA=25°C, unless otherwise specified) PARAMETER Input Start-Up Voltage Minimum Operation Voltage After Star t-Up Input Quiescent Current Maximum Startup Current in VCC Hiccup Operation Input Shutdown Current Over Voltage Protection Current Sense Voltage Switching Frequency Oscillator Maximum Duty Cycle Minimum Turn-On Time Power MOSFET Static Drain-Source On-State Resistance Drain-Source Voltage Drain-Source Leakage Current ACTL LED Dimming Analog Dimming ACTL Pin Input Current Analog Dimming Range High Level Analog Dimming Threshold Voltage Low Level VC Threshold for PWM Switch Off Thermal Protection Thermal Shutdown Temperature SYMBOL VST VIN(MIN) IQC IST(MAX) ISHDN VOVP VSENSE fSW DMAX tON(MIN) RDS(ON) VDSS IDSS After Start-Up, VCC=24V Maximum ICC at Low End of VCC Before Start-Up, VCC=15V VCC Pin MIN 15 6.0 32.5 38 TYP MAX UNIT 17 19 V 7.5 9.0 V 1.65 5.0 mA 250 300 μA 0.1 35.5 160 47 5.0 36.5 μA V mV kHz % ns 11.5 15.5 VC=3V 55 100 300 VGS=10V, ID=0.5A VGS=0V VDS=650V, VGS=0V 650 10 IACTL 1 0 VVC 0 1.1 TSD 150 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw TEST CONDITIONS 1.2 0.1 1.25 5 1.3 1.3 1.4 Ω V μA μA V V V V °C 3 of 4 QW-R125-029.c USL1650 LINEAR INTEGRATED CIRCUIT 2 1 TYPICAL APPLICATION CIRCUIT 2 1 2 1 2 1 Preliminary 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 4 of 4 QW-R125-029.c