unisonic technologies co., ltd l3080 preliminary cmos ic www.unisonic.com.tw 1 of 4 copyright ? 2016 unisonic technologies co., ltd qw-r125-043.a 30v/800ma integrated power led driver ? description the utc l3080 is a continuous conduction mode inductive step-down converter, designed for driving single or multiple series connected leds. using a few external components. the utc l3080 has a build-in power switch, based on different input voltage, the utc l3080 can drive several 1w or 3w leds. the device has the function of t hermal shutdown protection and led short-circuit/open-circuit protection. ? features * up to 800ma output current * high efficiency (up to 97%) * wide input voltage range: 5v~30v * typical 5% output current accuracy * single dim pin on/off and brightne ss control using dc voltage or pwm signal * led open-circuit protection * led short-circuit protection * internal thermal shutdown protection. * adjustable constant led current 1 sot-89-5 ? ordering information ordering number package packing L4120G-AB5-R sot-89-5 tape reel (1) r: tape reel (2) ab5: sot-89-5 (3) g: halogen free and lead free l3080l-ab5-r (1)packing type (2)package type (3)green package ? marking
l3080 preliminary cmos ic unisonic technologies co., ltd 2 of 4 www.unisonic.com.tw qw-r125-043.a ? pin configuration ? pin description pin no. pin name description 1 cs current sense input 2 gnd signal and power ground 3 dim enable switch, analog and pwm dimming input. 4 sw switch output. 5 v in input supply pin. ? block diagram +
l3080 preliminary cmos ic unisonic technologies co., ltd 3 of 4 www.unisonic.com.tw qw-r125-043.a ? absolute maximum rating (t a =25c, unless specified otherwise) parameter symbol ratings unit supply voltage v in 40 v drain voltage of the internal power switch sw 40 v current sense input (respect to v in ) cs -6.0 v logic level dimming input dim -0.3 ~ 6 v switch output current i sw 1 a power dissipation p d 0.8 w 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 oper ation is not implied. 2. human body model, 100pf capacitor discharged through a 1.5k ? resistor. ? thermal data parameter symbol ratings unit junction to ambient ja 160 c/w ? electrical characteristics (note 1, 2) (the following specifications apply for v in =12v, t a =25c, 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 v in rising 100 mv current sense mean current sense threshold voltage v cs v in -v cs 100 mv sense threshold hysteresis v cs_hys 15 % operating frequency maximum operation frequency f sw 1 mhz operating current quiescent supply current with output off i off v dim <0.3v 60 a 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 0.1 v dim pull up resistor to internal supply voltage r dim 150 k ? dim brightness dimmer dc brightness control range v dim_dc 0.5 2.5 v duty cycle range of low frequency dimming d pwm_lf 3000:1 duty cycle range of high frequency dimming d pwm_hf 10:1 output power switch sw on resistance r sw 0.6 ? continuous sw current i swmean 0.8 a sw leakage current i leak 0.5 5 a thermal shutdown thermal shutdown threshold t sd 150 c thermal shutdown hysteresis t sd-hys 20 c notes: 1. typical param eters are measured at 25 ? c and represent the parametric norm. 2. datasheet min/max specificati on limits are guaranteed by design, test, or statistical analysis.
l3080 preliminary cmos ic unisonic technologies co., ltd 4 of 4 www.unisonic.com.tw qw-r125-043.a ? typical application circuit 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.
|
