UNISONIC TECHNOLOGIES CO., LTD ULD3380 Preliminary LINEAR INTEGRATED CIRCUIT HIGH EFFICIENCY PWM BUCK LED DRIVER CONTROLLER 6 DESCRIPTION 5 The UTC ULD3380 is a PWM mode step-down converter. By well controlling the external MOSFET and regulating a constant output current. The output duty cycle of the UTC ULD3380 can be up to 100% for wider input voltage application. The UTC ULD3380 is available in a SOT-26 package. 4 1 2 3 SOT-26 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 ULD3380G-AG6-R Package SOT-26 Packing Tape Reel ULD3380G-AG6-R (1)Packing Type (1) R: Tape Reel (2)Package Type (2) AG6: SOT-26 (3)Green Package (3) G: Halogen Free and Lead Free MARKING 6 5 4 3380G 1 2 3 www.unisonic.com.tw Copyright © 2014 Unisonic Technologies Co., Ltd 1 of 4 QW-R109.034.C ULD3380 Preliminary PIN CONFIGURATIONS PIN DESCRIPTION PIN NO. 1 2 3 4 5 6 PIN NAME VCC GND GATE ACTL VC SENSE LINEAR INTEGRATED CIRCUIT DESCRIPTION Power supply Ground of the chip. Gate driver for external MOSFET switch. Analog dimming control. Compensation pin. LED current sense input pin. BLOCK DIAGRAM VCC + - 17V/7.5V 35V + - + - SENSE UVLO Internal Bias & Vref All Blocks VCC OK VCCOVP EN CC VC Current Waveform modulation VREF + - + - R Q Driver stage GATE R S OSC ACTL Dimming Function GND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 4 QW-R109-034.b ULD3380 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 2) 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 255 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 GATE Pin Maximum Voltage SYMBOL VST VIN(MIN) IQC After Start-Up, VCC=24V TYP MAX UNIT 17 19 V 7.5 9.0 V 1.65 5.0 mA IST(MAX) Maximum ICC at low end of VCC 250 300 μA ISHDN VOVP VSENSE fSW DMAX tON(MIN) VGATE Before Start-Up, VCC=15V VCC Pin 0.1 35.5 160 47 5.0 36.5 12 12 12 0.75 0.5 75 0.2 13.1 13 13.1 0.95 0.7 μA V mV kHz % ns V V V V V ns A GATE Voltage High VGATE_H GATE Voltage Low VGATE_L GATE Drive Rise and Fall Time GATE Drive Source and Sink Peak 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 MIN 15 6.0 32.5 38 VC=3V No Load at GATE Pin IGATE=-20mA IGATE=-100μA IGATE=20mA IGATE=100μA 1nF Load at GATE 1nF Load at GATE 300 11.1 11 11.1 0.55 0.3 IACTL 0 VVC TSD UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw TEST CONDITIONS 0 1.1 1.2 0.1 1.25 150 55 100 25 1.3 1.3 1.4 μA V V V V °C 3 of 4 QW-R109-034.b ULD3380 LINEAR INTEGRATED CIRCUIT TYPICAL APPLICATION CIRCUIT L1 1mH R1 1MΩ 3.3nF 2 1 C4 C5 1nF 10Ω 12V 2 1 ACTL 4 VCC 5 6 VC SENSE 2 3 GND GATE ZD1 R6 22Ω 4N60 R7 L2 0.5Ω 680μH VIN: 90 ~264VAC VOUT: 28V IOUT: 320mA D2 ES1J Q1 D1 ES2J LED+ 1 1 2 R3 10K 1 C3 4.7μF 1 UTC ULD3380 R4 C6 47μF/50V ZD2 54V + 2 R2 511K 3 C2 4.7μF C1 4.7μF 2 Preliminary 1 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-R109-034.b LED-