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UNISONIC TECHNOLOGIES CO., LTD L3060 Preliminary CMOS IC www.unisonic.com.tw 1 of 5 Copyright © 2015 Unisonic Technologies Co., Ltd QW-R125-037.a 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 Package Packing L3060G-AF5-R SOT-25 Tape Reel (1) R: Tape Reel (2) AF5: SOT-25 (3) G: Halogen Free and Lead Free L3060G-AF5-R (1)Packing Type (2)Package Type (3)Green Package

UNISONIC TECHNOLOGIES CO., LTD 2 of 5 www.unisonic.com.tw Q W - R 1 2 5 - 0 3 7 . a  MARKING 3060G  PIN CONFIGURATION 321 DIMGNDSW VIN CS  PIN DESCRIPTION PIN NO. PIN NAME DESCRIPTION 1 SW Switch output. 2 GND Signal and power ground. 3 DIM Enable switch, analog and PWM dimming input.

4 CS Current sense input, sampling resistor connected between CS and VIN

5 V IN Input supply pin. Must be locally bypassed.  BLOCK DIAGRAM

UNISONIC TECHNOLOGIES CO., LTD 3 of 5 www.unisonic.com.tw Q W - R 1 2 5 - 0 3 7 . a  ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Supply Voltage V IN -0.3~40 V Drain Voltage of the Internal Power Switch S W -0.3~40 V Current Sense Input (Respect to VIN) C S +0.3~(-6.0) V Logic Level Dimming Input D IM -0.3~6 V Switch Output Current I SW 0.6 A Power Dissipation P D 0.2 W ESD Susceptibility (Note 2) ESD 2 KV Operation Junction Temperature Range T J -40~150 °C Storage Temperature T STG -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 SYMBOL RATINGS UNIT VDD Supply Voltage V IN 0~30 V Operating Temperature T OPR -40~+85 °C  THERMAL DATA PARAMETER SYMBOL RATINGS UNIT Junction to Ambient θJA 300 ℃/W

UNISONIC TECHNOLOGIES CO., LTD 4 of 5 www.unisonic.com.tw Q W - R 1 2 5 - 0 3 7 . a  ELECTRICAL CHARACTERISTICS (Note 1, 2) (The following specifications apply for VIN=12V, TA=25°C, unless specified otherwise.) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Input Voltage V IN 5 30 V Under Voltage Lock Out V UVLO V IN Falling 4.7 V UVLO Hysteresis V UVLO, HYS VIN Rising 100 mV Current Sense Mean Current Sense Threshold Voltage V CS V IN-VCS 97 100 103 mV Sense Threshold Hysteresis V CS_HYS ±15 % CS Pin Input Current I CS V IN-VCS=50mV 8 μA Operating Frequency Maximum Operation Frequency F SW 1 MHz Operating Current Quiescent Supply Current with Output Off I OFF V DIM<0.3V 100 μA DIM Input Internal Supply Voltage V DIM DIM Floating 5 V DIM Input Voltage High V DIM_H 2.5 V DIM Input Voltage Low V DIM_L 0.3 V DIM Pull Up Resistor to Internal Supply Voltage R DIM 150 K Ω DIM Input Leakage to Ground I DIM_L V DIM=0 33 μA DIM Brightness Dimmer DC Brightness Control Range V DIM_DC 0.5 2.5 V Max. DIM Frequency f DIM f OSC=500kHz 50 kHz Duty Cycle Range of Low Frequency Dimming f DIM=100Hz 0.05% 1 Brightness Control Ratio DPWM_LF 2000:1 Duty Cycle Range of High Frequency Dimming f DIM=20KHz 10% 1 Brightness Control Ratio DPWM_HF 10:1 Output Power Switch SW On Resistance R SW 0.8 Ω Continuous SW Current I SWmean 0.5 A SW Leakage Current I LEAK 0.5 5 µA Thermal Shutdown Thermal Shutdown Threshold T SD 150 °C Thermal Shutdown hysteresis T SD-hys 20 °C 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 5 of 5 www.unisonic.com.tw Q W - R 1 2 5 - 0 3 7 . a  TYPICAL APPLICATION CIRCUIT VIN CS SW GND UTC L3060 VIN (DC)=5V~30V RS=0.15Ω 2.2µF 47µH DIM 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.