UNISONIC TECHNOLOGIES CO., LTD L3060 Preliminary CMOS IC 30V/500mA HIGH DIMMING RATIO LED CONSTANT CURRENT DRIVER DESCRIPTION The UTC L3060 is a continuous conduction mode inductive step-down converter, designed for driving single or multiple series connected LEDs efficiently from a voltage source higher than the total LEDs chain voltage. The device provides an externally adjustable output current of up to 500mA for a single LED. A dedicated DIM pin accepts either a DC voltage (0.5V~2.5V) dimming or a wide range of pulsed dimming. Applying a voltage of 0.3V or lower to the DIM pin turns the output off and switches the device into a low current standby state. The UTC L3060 has a build-in power switch, based on different input voltage, UTC L3060 can drive several 1W or 2W LEDs. FEATURES * 5V~30V input voltage range * Simple low parts count * Typical ±3% output current accuracy * Up to 500mA output current * Single DIM pin on/off and brightness control using DC voltage or PWM signal * High efficiency up to 97% * Adjustable constant LED current * Protection features: LED open-circuit protection LED short-circuit protection Internal thermal shutdown protection. ORDERING INFORMATION Ordering Number L3060G-AF5-R Package SOT-25 Packing Tape Reel L3060G-AF5-R (1)Packing Type (1) R: Tape Reel (2)Package Type (2) AF5: SOT-25 (3)Green Package (3) G: Halogen Free and Lead Free www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd 1 of 5 QW-R125-037.a L3060 Preliminary CMOS IC MARKING 5 4 3060G 1 2 3 PIN CONFIGURATION VIN CS 4 5 2 3 SW GND DIM PIN DESCRIPTION PIN NO. 1 2 3 4 5 1 PIN NAME SW GND DIM CS VIN DESCRIPTION Switch output. Signal and power ground. Enable switch, analog and PWM dimming input. Current sense input, sampling resistor connected between CS and VIN Input supply pin. Must be locally bypassed. BLOCK DIAGRAM + UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 5 QW-R125-037.a L3060 Preliminary CMOS IC ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Supply Voltage VIN -0.3~40 V Drain Voltage of the Internal Power Switch SW -0.3~40 V Current Sense Input (Respect to VIN) CS +0.3~(-6.0) V Logic Level Dimming Input DIM -0.3~6 V Switch Output Current ISW 0.6 A Power Dissipation PD 0.2 W ESD Susceptibility (Note 2) ESD 2 KV Operation Junction Temperature Range 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. Human body model, 100pF capacitor discharged through a 1.5kΩ resistor. RECOMMENDED OPERATING RANGE PARAMETER VDD Supply Voltage Operating Temperature SYMBOL VIN TOPR RATINGS 0~30 -40~+85 UNIT V °C SYMBOL θJA RATINGS 300 UNIT ℃/W THERMAL DATA PARAMETER Junction to Ambient UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 5 QW-R125-037.a L3060 Preliminary CMOS IC ELECTRICAL CHARACTERISTICS (Note 1, 2) (The following specifications apply for VIN=12V, TA=25°C, unless specified otherwise.) PARAMETER SYMBOL TEST CONDITIONS MIN TYP Input Voltage VIN 5 Under Voltage Lock Out VUVLO VIN Falling 4.7 UVLO Hysteresis VUVLO, HYS VIN Rising 100 Current Sense Mean Current Sense Threshold Voltage VCS VIN-VCS 97 100 Sense Threshold Hysteresis VCS_HYS ±15 CS Pin Input Current ICS VIN-VCS=50mV 8 Operating Frequency Maximum Operation Frequency FSW Operating Current Quiescent Supply Current with Output Off IOFF VDIM<0.3V 100 DIM Input Internal Supply Voltage VDIM DIM Floating 5 DIM Input Voltage High VDIM_H 2.5 DIM Input Voltage Low VDIM_L DIM Pull Up Resistor to Internal Supply Voltage RDIM 150 DIM Input Leakage to Ground IDIM_L VDIM=0 33 DIM Brightness Dimmer DC Brightness Control Range VDIM_DC 0.5 Max. DIM Frequency fDIM fOSC=500kHz Duty Cycle Range of Low Frequency Dimming fDIM=100Hz 0.05% DPWM_LF Brightness Control Ratio 2000:1 Duty Cycle Range of High Frequency Dimming fDIM=20KHz 10% DPWM_HF Brightness Control Ratio 10:1 Output Power Switch SW On Resistance RSW 0.8 Continuous SW Current ISWmean SW Leakage Current ILEAK 0.5 Thermal Shutdown Thermal Shutdown Threshold TSD 150 Thermal Shutdown hysteresis TSD-hys 20 Notes: 1. Typical parameters are measured at 25˚C and represent the parametric norm. 2. Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MAX 30 UNIT V V mV 103 mV % μA 1 MHz μA 0.3 2.5 50 1 V V V KΩ μA V kHz 1 0.5 5 Ω A µA °C °C 4 of 5 QW-R125-037.a L3060 CMOS IC TYPICAL APPLICATION CIRCUIT VIN (DC)=5V~30V C1 2.2µF D1 5 SW 1 VIN CS L1 4 47µH UTC L3060 2 GND RS=0.15Ω Preliminary DIM 3 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-R125-037.a