2012/02/23 ver.1 page 1 sp6801 universal high brightness led driver description applications the sp6801 is a pwm high efficiency led driver. it operates in wide range input voltage from 10v up to 600v. the device drive s an external mosfet at a fixed frequency. the frequency is programmable up to 300khz with a single resi stor. the dimming control for sp6801 can be either pwm input or linear input. the led string is driven at a constant current without the need for loop compensation. sp6801 requires only fe w external components to achieve constant led current making it ideas for low cost led driver. the sp6801 is available in sop-8 package. ac/dc or dc/dc led driver applications backlighting for flat panel displays general purpose constant current source automotive chargers features pin configuration(sop-8) part marking >90% efficiency 10v to 600v dc input range constant current led driver linear and pwm dimming capability internal thermal overload protection
2012/02/23 ver.1 page 2 sp6801 universal high brightness led driver typical applcation circuit pin description pin symbol description 1 vin supply voltage input 2 cs current sense. this pin senses the voltage across a resistor, to control pwm output. this pin also provides current amplitude informatio n for current-mode control 3 gnd ground 4 gate gate driver output to drive the external mos fet 5 dim dimming control 6 vdd power supply pin for internal circuits 7 ld linear dimming by changing the current limit threshold at current sense comparator 8 rosc this is used to charge an internal capacitor , to determine the switching frequency ordering information part number package part marking SP6801S8RGB sop-8 sp6801 SP6801S8RGB : tape reel ; pb C free ; halogen -free
2012/02/23 ver.1 page 3 sp6801 universal high brightness led driver block diagram absoulte maximum ratings (t a =25 unless otherwise specified) parameter symbol value unit dc supply voltage v in 600 v vdd to ground vdd 12 v cs, gate, dim, ld vdd+0.3v v operating temperature t opr -40 85 maximum junction temperature t j(max) -40~125 storage temperature t s -65 150 thermal resistance junction C case (*) r ? jc 150 /w power dissipation p d 630 mw the ic has a protection circuit against static elec tricity. do not apply high static electricity or hi gh voltage that exceeds the performance of the protection circuit to the ic.
2012/02/23 ver.1 page 4 sp6801 universal high brightness led driver electrical characteristics (t a =25 , v in =12v, unless otherwise specified) symbol parameter conditions min. typ. max. unit supply voltage ( v in pin ) i sd shut down mode supply current dim to ground, 0.5 1 ma vin dc input supply voltage 10 600 v uvlo (on ) start threshold voltage v dd rising 6.45 6.7 6.95 v uvlo under voltage lockout hysteresis v dd falling 500 mv internal regulator ( v dd pin ) v dd internal regulated voltage vin=10v~600v, i dd =0, gate open 7.0 7.5 8.0 v v dd load regulation i dd =0~1ma, v dim =v dd, rosc=226k , gate=500pf 100 mv v dd maximum v dd voltage apply external voltage 10 v i dd(ext) current available for external circuit vin=15~100v 0.7 ma oscillator ( rosc pin ) rosc=1 m ? 20 25 30 khz f osc frequency rosc=226 k ? 80 100 120 khz current sensing ( cs pin ) vcs( th ) current sense pull-in threshold voltage t a =-40 ~85 225 250 275 mv t blank current sense blanking interval v cs =0.55v ld, v ld, =v dd 150 215 280 ns t delay delay to output v ld =0.15v, vcs=0~0.22v after t blank, vin=12v 300 ns gate driver output ( gate pin ) v ol output low level io=-10ma 0 0.3 v v oh output high level io=10ma v dd -0.3 v dd v tr rising time load cap=500pf, v dd =7.5v 30 50 ns tf falling time load cap=500pf, v dd =7.5v 30 50 ns pwm dimming ( dim pin ) v en(lo) pwm dimming input low voltage vin=10v~600v 0.8 v v en(hi) pwm dimming input high voltage vin=10v~600v 2 v r en pwm dimming pull down resistance v en =5v 50 100 150 k ? linear dimming (ld pin) v ld linear dimming voltage vin=12v, t a <85 250 mv
2012/02/23 ver.1 page 5 sp6801 universal high brightness led driver sop-8 package outline
2012/02/23 ver.1 page 6 sp6801 universal high brightness led driver information provided is alleged to be exact and con sistent. sync power corporation presumes no respon sibility for the penalties of use of such information or for any vio lation of patents or other rights of third parties which may result from its use. no license is granted by allegation or otherwise un der any patent or patent rights of sync power corpo ration. conditions mentioned in this publication are subject to change without notice. this publication surpasses and re places all information previously supplied. sync power corporation produc ts are not authorized for use as critical component s in life support devices or systems without express written approval of sync power corporation. ?the sync power logo is a registered trademark of s ync power corporation ?2011 sync power corporation C printed in taiwan C all rights reserved sync power corporation 7f-2, no.3-1, park street nankang district (nksp), taipei, taiwan 115 phone: 886-2-2655-8178 fax: 886-2-2655-8468 http://www.syncpower.com
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