constant current output: 300ma to 700ma wide input voltage: 9 ~ 36vdc wide output led string voltage: 2 ~ 32vdc high efficiency up to 95% dc/dc step-down converter built-in emi filter, comply with en55015 and fcc part15 without additional input filter and capacitors built-in pwm and remote on/off control protections: short circuit / over temperature cooling by free air convection compact size low cost, high reliability suitable for driving illumination led 3 years warranty fully encapsulated with ip67 level specification ldd-300l ldd-350l ldd-500l ldd-600l ldd-700l order no. current range voltage range current accuracy (typ.) output efficiency (max.) dc current input pwm dimming & on/off control environment emc working temp. working humidity storage temp., humidity temp. coefficient vibration operating case temp. (max.) mtbf dimension others note weight potting material short circuit filter remote on/off pwm frequency quiescent input in shutdown mode(max.) current over temperature protection ripple & noise(max.) note.2 switching freqency external capacitance load (max.) 95% at full load and 24vdc/36vdc input 300ma 10ma 9 ~ 36vdc 2.2uf 40khz ~ 1000khz 150mvp-p 5% at 24vdc input 2 ~ 32vdc 300ma 350ma 150mvp-p 350ma 500ma 150mvp-p 500ma 600ma 200mvp-p 600ma 700ma 200mvp-p 700ma 2000khrs min. mil-hdbk-217f (25 ) -40 ~ + 85 (refer to derating curve) 20% ~ 90% rh non-condensing -55 ~ +125 , 10 ~ 95% rh 0.03% / 10 ~ 500hz, 2g 10min./1 cycle, period for 60min. each along x, y, z axes 100 22.6*9.9*8.9mm or 0.89"*0.39"*0.33" inch (l*w*h) ldd-l:4g ; ldd-lw:7.3g expoxy(ul94-v0) 1.all parameters are specified at normal input(24vdc), rated load, 25 70% rh ambient. 2.ripple & noise are measured at 20mhz by using a 12" twisted pair terminated with a 0.1uf capacitor. 3.test condition: 24vdc input. full load note.3 no load capacitor leave open if not use power on with dimming: dim ~ -vin >3.5 ~ 8vdc or open circuit power off : dim ~ -vin < 0.5vdc or short 100 ~ 1khz 1ma at pwm dimming off and 24vdc input dc-dc constant current led driver l d d - l s e r i e s features : voltage range tj 150 typically(ic1) detect on main control ic regulated at rated output current protection type: can be continued, recovers automatically after fau lt condition is removed protection type : shut down, recovers automatically after temperatu re goes down ems immunity compliance to en55015, fcc part 15 class b compliance to en61000-4-2,3,4,6,8, light industry level, criter ia a emi conduction & radiation file name:ldd-l-spec 2012-03-01 ldd-350l blank : pin style w : wire style w
bottom view bottom view 1 1 3 3 4 4 5 6 7.62[0.30] 3.81 [ 0.15 ] 2.54 [0.10] 9.9 [0.39] side view side view 8.9 [0.33] 17.78 [0.7] 22.6 [0.89] pin no. 14 5 6 3 output +vin -vin -vout +vout pwm dim comment dc supply don't connect to -vout led - connection led + connection on/off and pwm dimming (leave open if not used) mechanical specification pin configuration pin no. 14 5 6 3 output +vin -vin -vout +vout pwm dim comment dc supply don't connect to -vout led - connection led + connection on/off and pwm dimming (leave open if not used) (red) (white) (black) (blue) (yellow) 9.9 ( 0.39 ) 5 2mm 5 6 100 10mm 8.9[0.35] 4 5 22.6[ 0.89] pwm dimming control 0 25 50 75 100 25 50 75 100 pwm signal output current during pwm dimming operation, the output current will change to pwm style. h max l0 off off off on on 100~1khz on duty cycle (%) i out (% ) tol : 3%(typ.) derating curve ta ( ) load (%) -40 0 25 50 71 85 50 25 75 100 100 71 for 600~700ma 85 for 300~500ma unit: mm (inch) blank type(ldd - - - - l): lw): w type(ldd note:pin size tolerance 0.60 0.05mm dc-dc constant current led driver l d d - l s e r i e s file name:ldd-l-spec 2012-03-01
65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% 1 2 3 4 5 6 7 8 9 10 300 ma 350 ma 500 ma 600 ma 700 ma 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% 300 ma 350 ma 500 ma 600 ma 700 ma 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% 1 2 3 4 5 6 7 300ma 350ma 500ma 600ma 700ma efficiency vs output voltage(number of leds) fig-1 12vdc input, 1~3 leds(vf=3v) fig-2 24vdc input, 1~7 leds(vf=3 v) fig-3 36vdc input, 1~10 leds(vf=3v) output voltage(leds) 1 2 output voltage(leds) output voltage(leds) efficiency (%) efficiency (%) efficiency (%) 3 75% 75% 75% 70% 70% 65% 70% 80% 80% 80% 85% 85% 85% 90% 90% 90% 95% 95% 95% 100% 100% 100% 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 9 10 standard application +vin +vout -vin h: >3.5~8vdc or open circuit l: <0.5vdc or short -vout 1st led last led h pwm dimming l ldd-l dc-dc constant current led driver l d d - l s e r i e s file name:ldd-l-spec 2012-03-01
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