the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice. k78lxx-500 b/0-2012 page 1 of 5 k78lxx-500 series wide input non-isolated regulated output rohs features product program input voltage (vdc) output efficiency (%) typ. part number normal range voltage (vdc) current (ma) vin (min) vin (max) k78l03-500 12 4.5-30 3.3 500 90 77 k78l05-500 12 6.5-30 5.0 500 94 81 K78LX6-500 24 8-30 6.5 500 95 85 k78l09-500 24 11-30 9.0 500 95 89 k78l12-500 24 15-30 12 500 96 92 k78l15-500 24 18-30 15 500 96 93 output specifications item test conditions min. typ. max. units output voltage accuracy input voltage range at full load 2 3 line regulation* input voltage range at full load 0.3 0.5 load regulation normal input ,10% to 100% load 0.5 0.75 % ripple & noise 20mhz bandwidth (refer to figure 3) 20 35 mvp-p thermal shutdown internal ic junction 160 c output current limit normal input voltage 2000 quiescent current 5 13 ma temperature coefficient -40 c to +85 c ambient 0.02 %/ c max capacitance load 1000 f * k78l03-500 is 1.0% (max) common specifications item test conditions min. typ. max. units storage humidity range 95 % operating temp. range power derating (above 71 c) -40 85 operating case temperature 100 storage temp. range -55 125 lead temperature 1.5mm from case for 10 seconds 300 c cooling free air convection case material plastic (ul94-v0) mtbf 25 mil-hdbk-217f 2000 k hours weight 2.0 g efficiency up to 96% temperature range: -40 c to +85 c no heat sink required pin-out compatible with lm78xx linears thermal shutdown low ripple and noise sip package industry standard pinout mtbf>2,000,000 hours applications the k78lxx-500 series high efficiency switching regulators are ideally suited to replace 78xx linear regulators and are pin compatible. the efficiency of up to 96% means that very little energy is wasted as heat so there is no need for any heat sinks with their additional space and mounting costs. model selection k78l05-500 product series output voltage output current 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. k78lxx-500 b/0-2012 page 2 of 5 typical temperature curve external capacitor table operating temp.( ) c temperature derating graph (figure 1) part number c1 (ceramic capacitor) c2 (ceramic capacitor) k78l03-500 10 f/50v 22 f/16v k78l05-500 10 f/50v 22 f/16v K78LX6-500 10 f/50v 10 f/16v k78l09-500 10 f/50v 10 f/16v k78l12-500 10 f/50v 10 f/25v k78l15-500 10 f/50v 10 f/25v standard application circuit 1.c1 and c2 are required and should be fitted close to the converter pins. 2.the capacitance of c1 ,c2 sees external capacitor table,it can be increased properly if required, and. 3. tantalum or low esr electrolytic capacitors may also suffice no parallel connection or plug and play. 4.output can not short-circuit,or it may cause permanent damage to the device. note: +vin gnd gnd k78lxx-500 1 2 3 +vout c1 c2 + + (figure 2) test configurations (ta=25 c) 1 efficiency and output voltage ripple test scope ceramic 3 +vin gnd +vout c2 c1 25.4mm 1 2 . 5 4 m m dc/dc converter 2 25.4mm 12.7mm 1f 10f tantalum copper strip copper strip l o a d (figure 3) 2 start-up and load transient response test 3 +vin gnd +vout c2 c1 50.8 mm 1 2 . 5 4 m m dc/dc converter 2 scope copper strip l o a d copper strip (figure 4)
the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice. k78lxx-500 b/0-2012 page 3 of 5 output ripple reduction to reduce output ripple, it is recommended to add a lc filter in output port. l: recommended parameter 10 h ~ 47 h. 3 +vin gnd +vout 1 dc/dc converter c1 22f 2 c2 l o a d l (figure 5) characteristic curve (ta=25 c) 1 efficiency and output voltage ripple efficiency vs load(vin=rating) 0 10 20 30 40 50 60 70 80 90 100 20 40 60 100140180220260300340380420460500550 load(ma) efficiency(%) k78l03-500 k78l05-500 K78LX6-500 k78l09-500 k78l12-500 k78l15-500 0 5 10 15 20 25 30 35 40 45 50 20 60100140180220260300340380420460500550 load ripple(mv) k78l03-500 k78l05-500 K78LX6-500 k78l09-500 k78l12-500 k78l15-500 efficiency vs output load (vin=norm) output voltage ripple vs output load (vin=norm) efficiency vs vin(full load) 45 50 55 60 65 70 75 80 85 90 95 100 4.56.5 8 101112151618202224262830 vin(v) efficiency(%) k78l03-500 k78l05-500 K78LX6-500 k78l09-500 k78l12-500 k78l15-500 ripple vs vin(full load) 0 5 10 15 20 25 30 35 40 45 50 4.56.5 8 1011 12 1518 2022 24 2628 30vin(v) ripple(mv) k78l03-500 k78l05-500 K78LX6-500 k78l09-500 k78l12-500 k78l15-500 efficiency vs input voltage (full load) output voltage ripple vs input voltage (full load) 2 start-up waveform k78l03-500 k78l05-500 vin=12vdc, out=3.3v/500ma, cin=10 f, co=22 f vin=12vdc, out=5v/500ma , cin =10 f, co=22 f ch1:1v/div, time:5ms/div ch1:1v/div, time:5ms/div
the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice. k78lxx-500 b/0-2012 page 4 of 5 K78LX6-500 k78l09-500 vin=24vdc, out=6.5v/500ma, cin=10 f, co=10 f vin=24vdc, out=9v/500ma, cin=10 f, co=10 f ch1:2v/div, time:5ms/div ch1:2v/div, time:5ms/div k78l12-500 k78l15-500 vin=24vdc, out=12v/500ma, cin=10 f, co=10 f vin=24vdc, out=15v/500ma, cin=10 f, co=10 f ch1:2v/div, time:10ms/div ch1:5v/div, time:10ms/div 3 load transient response k78l03-500 k78l05-500 vin=12vdc, vout=3.3v, cin=10 f, co=22 f vin=12vdc, vout=5v , cin =10 f, co=22 f ch1: vout, 200mv/div ch1: vout, 200mv/div ch2: i load , 500ma/div ch2: i load , 500ma/div time: 500 s/div time: 500 s/div K78LX6-500 k78l09-500 vin=24vdc, vout=6.5v, cin=10 f, co=10 f vin=24vdc, vout=9v, cin=10 f, co=10 f ch1:vout, 200mv/div ch1: vout,200mv/div ch2:i load , 500ma/div ch2: i load ,500ma/div time: 500 s/div time: 500 s/div
the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice. k78lxx-500 b/0-2012 page 5 of 5 k78l12-500 k78l15-500 vin=24vdc, vout=12v, cin=10 f, co=10 f vin=24vdc, vout=15v, cin=10 f, co=10 f ch1: vout, 200mv/div ch1: vout, 200mv/div ch2: i load , 500ma/div ch2: i load , 500ma/div time: 500 s/div time: 500 s/div package style and pinning 0 . 5 0 [ 0 . 0 2 0 ] 5.08 [0.200] 11.60 [0.457] 1 . 8 0 [ 0 . 0 7 1 ] 0 . 3 0 [ 0 . 0 1 2 ] 7 . 5 0 [ 0 . 2 9 5 ] note unitmminch pinsectiontolerances general tolerances: : :[] : 0.10mm[ 0.004inch] 0.25mm[ 0.010inch] mechanicaldimmensions recommendedfootprint tube outline dimensions 1 .00 [0.039] 123 123 1 0 . 2 0 [ 0 . 4 0 2 ] 4 . 1 0 [ 0 . 1 6 1 ] 0.50 [0.020] 9.60 [0.378] 1 2 . 4 0 [ 0 . 4 8 8 ] 1 6 . 9 0 [ 0 . 6 6 5 ] 4.90 [0.193] note: grid 2.54*2.54mm . ( ) frontview () bottom view footprintdetails pin function gnd +vout +vin 1 2 3 shorttubeinnerpackagingdimensions: l*w*h=255*170*80mm; shorttubeouterpackaging dimensions (withsixinnerpackagingboxes): l*w*h=375*280*270mm; long tubeinnerpackagingdimensions: l*w*h=580*200*100mm; long tubeouterpackagingdimensions(withtwoinnerpackagingboxes) l*w*h=600*215*220mm; long tubeouterpackagingdimensions(with threeinnerpackagingboxes) l*w*h=600*215*325mm. note: unitmm[inch] generaltolerance : 0.50mm[ 0.020inch] l=530mm[20.866 inch]packagingquantity:43pcs l=220mm[8.661inch] pcs packagingquantity:17 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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