the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice. KC24AH -xxx a/4-2012 page 1 of 3 KC24AH series pwm dim constant current output led driver rohs features product program input voltage(v) output part number nominal range voltage (vdc) current (ma) dimming control efficiency (%,max) KC24AH-300 24 6.5-36 2-30 0-300 pwm 96 KC24AH-350 24 6.5-36 2-30 0-350 pwm 96 KC24AH-500 24 6.5-36 2-30 0-500 pwm 96 KC24AH-600 24 6.5-36 2-30 0-600 pwm 96 KC24AH-700 24 6.5-36 2-30 0-700 pwm 96 common specifications item test condition min. typ. max. units utmost input voltage 10 seconds 5.5 40 recommended input voltage 6.5 24 36 vdc input filter capacitor(2 f) output voltage range vin=36v 2 30 input-output voltage drop 4.5 6.5 vdc output current range see the selection guide ,while vin-vout>4.5v output current accuracy vin=24v, 5 leds 7 12 output current stability vin=24v, 1led to 5 leds 8 15 % temperature coefficient -40 c to+71 c ambient 0.03 %/ c efficiency at full load 96 % short circuit protection continuous 300ma / 350ma -40 85 operating temperature range 500ma/ 600ma/ 700ma -40 71 storage temperature range -55 125 maximum case temperature 100 c maximum capacitive load 470 f mtbf mil-hdbk-217f(+25 c) 2,000,000 hours case material plastic (ul94-v0) dimensions 22.8*10.2*9.5 mm weight 3.5 g pwm dimming and on/off control (let it open if not use) on open or 2.8vKC24AH series is a step-down constant current source designed for driving high power leds. the output currents available are 300ma, 350ma, 500ma, 600ma, 700ma. the KC24AH series is fully featured with very high efficiency, wide input voltage range, high ambient operating temperature,pwm dimming and remote on/off . model selection KC24AH-350 product series output current package style input voltage mornsun science & technology co.,ltd. address: no. 5, kehui st. 1, kehui development center, science ave., guangzhou science city, luogang district, guangzhou,p.r.china. tel: 86-20-38601850 fax:86-20-38601272 http://www.mornsun-power.com
the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice. KC24AH -xxx a/4-2012 page 2 of 3 digital dimming control pwm digital control signal 0 1 output current pwm digital control signal 0 1 output current(led appears bright) 0 1 pwm digital control signal 0 1 output current(led appears dim) 0 1 this is a pwm type digital dimming, which you can control the output current by adjusting the pulse width of the pwm signal. io_set=io_norm d io_set refres to the wanted output current value. io_norm refers to the rated output current d refers to the pulse width of the pwm signal for example: we assume the rated output current is 300ma and wanted output current is 150ma, then the pulse width should be 0.5 from the equation above. that is say if we keep the pulse width of pwm signal at 0.5, the output current will be kept at 150ma. it is natural for the driver to generate a audibly noise in dimming process, because the frequency of the control circuit is within human audibly range (20hz~20khz). in order to avoid the human eye can observe the led flashes, the pwm dimming frequency is recommended to set above 100hz. typical application circuits pwm dimming control circuit 1st led last led KC24AH-xxx +vin gnd 1 4 3 6 5 KC24AH-xxx 1 4 3 6 5 1st led last led 1st led last led ptc ptc figure 1 figure 2 +vin gnd in actual use, if necessary to protect led, a ptc of positive temperature coefficient may be connect to the input end of every channel or all channels, as shown in figure 2. emc recommended circuit 1st led last led KC24AH-xxx +vin gnd 1 4 3 6 5 c1 filter2t c2 (figure 3) emi filter circuit + vin gnd +vout -vout load tvs c0 c1 c2 c3 c4 c5 r1 r2 lcm vin dim gnd vo+ vo- k c 2 4 a h - 7 0 0 2 1 dim * (figure 4) emi/rfi conducted en55015 recommended circuit note:1.dim pin is the module s pwm dimming pin as shown in figure 4. 2.while adding circuit ,it may extend the pwm dimming output reaction time.
the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice. KC24AH -xxx a/4-2012 page 3 of 3 emc level: item standard level predicate remark emi conducted en 55015 power port qualification add external circuit ? 4kv add external circuit ? 1kv add external circuit ? 1kv add external circuit recommended parameter: components specifications tvs smcj48a,1500w bringtking lcm uu9.8p4m15-00 15mh (emei) c0 470 f/50v capxon c1 4.7 f/50v 1210 (torch) c2 1.0 f/50v 1210 (torch) c3 470pf/100v 0805 (torch) c4 270pf/100v 0805 (torch) c5 100pf/100v 0805 (torch) r1 r2 680 0805(can replaced by inductance or magnetic bead) outline dimensions & pin connections 1 4 3 5 6 (bottom view) footprint details pin 1 4 6 5 vin gnd on/off/pwm +vout function 3 -vout comments dc supply leave open if not use do not connect to -vout led cathode connection led anode connection mechanicaldimensions recommendedfootprint tube outlinedimensions note: unit: mm[inch] generaltolerances: 0.5mm[ 0.020inch] note unitmm[inch] pin diameter tolerances: 0.10mm[ 0.004inch] general tolerances: 0.25mm[ 0.010inch] : : 25.50[1.004] 11.50[0.453] 1 7 . 5 0 [ 0 . 6 8 9 ] 1 1 . 5 0 [ 0 . 4 5 3 ] 22.80[0.898] 1 0 . 2 0 [ 0 . 4 0 2 ] 7 . 6 2 [ 0 . 3 0 0 ] 2 . 5 4 [ 0 . 1 0 0 ] 17.78[0.700] 9 . 5 0 [ 0 . 3 7 4 ] 4.10 [0.161] 0 . 5 0 [ 0 . 0 2 0 ] ? 0.50 [0.020] ?? 1.00 [0.039] 1 4 3 5 6 l=530mm[20.866inch] devices per tube quantity: 50pcs l=220mm[8.661inch] devices per tube quantity: 20pcs short tube inner packaging dimensions: l*w*h=255*170*80mm short tube outer packaging dimensions(with six inner packaging boxes): l*w*h=375*280*270mm long tube inner packaging dimensions: l*w*h=580*200*100mm long tube outer packaging dimensions(with two inner packaging boxes): l*w*h=600*215*220mm long tube outer packaging dimensions(with three inner packaging boxes): l*w*h=600*215*325mm note gridmm : :2.54*2.54. (front view) note: 1. all specifications measured at ta=25 c, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 2. in this datasheet, all the test methods of indications are based on corporate standards.
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