the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice. k78xx-2000(l) a/2 -2011 page 1 of 4 k78xx-2000(l) series wide input non-isolated & regulated single output rohs features product program input voltage(vdc) output efficiency (%)(typ.) part number nominal range voltage (vdc) current (ma) vin (min.) vin (max.) k7801-2000(l) 12 4.75-18 1.5 2000 79 76 k78x2-2000(l) 12 4.75-18 1.8 2000 81 79 k7802-2000(l) 12 4.75-18 2.5 2000 85 83 K7803-2000(l) 12 4.75-18 3.3 2000 87 86 k7805-2000(l) 12 7-18 5 2000 91 88 k78x6-2000(l) 12 8.5-18 6.5 2000 92 91 add suffix l for 90 bend pins, for example: k7805-2000l. output specifications item test conditions min. typ. max. units output voltage accuracy 100% full load, input voltage range 2 3 line regulation vin=min. to max, at full load 0.5 0.75 load regulation 10% to 100% load 0.5 1.0 % ripple & noise* 20mhz bandwidth (refer to figure 6) 25 45 mvp-p short circuit input power 0.5 1.8 w short circuit protection continuous, auto-recovery thermal shutdown internal ic junction 150 c output current limit 5000 ma switching frequency full load, input voltage range 300 340 380 khz quiescent current 5 10 ma temperature coefficient -40 c ~ +85 c ambient 0.03 %/ c max capacitance load 1000 f *test ripple and noise by parallel cable method. common specifications operating temp. range -40~+85 (above 71 c power derating) operating case temp. +100 (max) storage temp. range -55~+125 cooling free air convection lead temperature** 300 (max) storage humidity range 95% case material plastic(ul94-v0) mtbf > 2000k hours (25 ,mil-hdbk-217f) weight 4.0g conducted emissions (refer to figure 5) en55022 class b radiated emissions en55022 class b esd en61000-4-2 level 3 6kv/8kv perf. criteria b efficiency up to 92%,no heatsink required 2a large current output operating temperature : -40 c ~ +85 c short circuit protection, thermal shutdown low ripple and noise micro miniature sip package, meet ul94-v0 requirement ultra low power loss industry standard pinout pin-out compatible with lm78xx linear mtbe>2000,000hours applications upgraded k78xx-2000(l) series switching regulators are ideal replacement for k78xx linear regulators and ldos. the efficiency of up to 92% 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. they are widely used in industrial control, instrumentation, and electric power applications. model selection k7805-2000 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: 86-20-28203030 fax:86-20-28203068 http://www.mornsun-power.com **1.5mm from case for 10 seconds
the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice. k78xx-2000(l) a/2 -2011 page 2 of 4 typical charecteristics external capacitor table operating temp.( ) c temperature derating graph (figure 1) part number c1 (ceramic capacitor) c2 (ceramic capacitor) k7801-2000(l) 10 f/25v 22 f/6.3v k78x2-2000(l) 10 f/25v 22 f/6.3v k7802-2000(l) 10 f/25v 22 f/6.3v K7803-2000(l) 10 f/25v 22 f/6.3v k7805-2000(l) 10 f/25v 22 f/16v k78x6-2000(l) 10 f/25v 22 f/16v typical application circuit (figure 2) note: 1. c1 and c2 are required and should be fitted close to the converter pins. 2. the capacitance of c1and c2 sees external capacitor table, it can be increased properly if required, and tantalum or low esr electrolytic capacitors may also suffice. 3. no parallel connection or plug and play. input filter circuit connect +vin gnd 10uf 10uh-47uh 10uf vin vo gnd +vout gnd (figure 3) output filter circuit connect +vin gnd 10uf 10uh-47uh 22uf vin vo gnd 10uf rl (figure 4) emc recommended circuit +vin gnd 2.2uf 1mh 1uf vin vo gnd 1mh 330uf +vout gnd (figure 5) +vin gnd gnd k78xx-2000(l) 1 2 3 +vout c1 c2
the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice. k78xx-2000(l) a/2 -2011 page 3 of 4 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 6) 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 7) characteristics curve efficiency ripple efficiency vs.vin (full load) 50 55 60 65 70 75 80 85 90 95 100 4.755 66.57.28 91012151820 vin(v) efficiency(%) k7801-2000 k78x2-2000 k7802-2000 K7803-2000 k7805-2000 k78x6-2000 ripple vs. vin(full load) 0 5 10 15 20 25 30 35 40 45 4.755 66.57.28 91012151820 vin(v) ripple(mv) k7801-2000 k78x2-2000 k7802-2000 K7803-2000 k7805-2000 k78x6-2000 efficiency vs. load(vin=12v) 50 55 60 65 70 75 80 85 90 95 100 200400 600800100012001400160018002000 load(ma) efficiency(%) k7801-2000 k78x2-2000 k7802-2000 K7803-2000 k7805-2000 k78x6-2000 ripple vs. load(vin=12v) 0 5 10 15 20 25 30 35 40 45 200 400 600 800100012001400160018002000 load(ma) ripple(mv) k7801-2000 k78x2-2000 k7802-2000 K7803-2000 k7805-2000 k78x6-2000
the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice. k78xx-2000(l) a/2 -2011 page 4 of 4 outline dimensions & footprint details 1 3 2 +vin gnd +vout footprint details note: unit:mm[inch] pin section tolerances: 0.10mm[ 0.004inch] general tolerances: 0.25mm[ 0.010inch] note: unit :mm[inch] general tolerances: 0.50mm[ 0.020inch] l=530mm[20.866inch] devices per tube quantity: 44pcs l=220mm[8.661inch] devices per tube quantity: 17pcs 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 pin function 11.20 [0.441] 2 6 . 2 0 [ 0 . 0 3 1 ] 2 0 . 2 0 [ 0 . 7 9 5 ] 6.20 [0.244] k78xx-2000l 11.60 [0.457] 2 3 . 6 0 [ 0 . 9 2 9 ] 2 0 . 6 0 [ 0 . 8 1 1 ] 11.20 [0.441] 16.20 [0.638] k78xx-2000 k78xx-2000l k78xx-2000 5 . 2 0 [ 0 . 2 0 5 ] mechanical dimensions recommended footprint tube outline dimensions (bottom view) 5.08 [0.200] 4.10 [0.161] 17.50 [0.689] 0 . 5 0 [ 0 . 0 2 0 ] 9 . 0 0 [ 0 . 3 5 4 ] 11.50 [0.453] 0 . 3 0 [ 0 . 0 1 2 ] 0.50 [0.020] 2 . 1 5 [ 0 . 0 8 5 ] 123 9.00 [0.354] 1 1 . 5 0 [ 0 . 4 5 3 ] 5 . 0 8 [ 0 . 2 0 0 ] 1 7 . 5 0 [ 0 . 6 8 9 ] 0 . 3 0 [ 0 . 0 1 2 ] 1 9 . 0 0 [ 0 . 7 4 8 ] 0 . 5 0 [ 0 . 0 2 0 ] 4.10 [0.161] 1 2 3 1 .00 [ 0.039] 2 . 1 5 [ 0 . 0 8 5 ] 5.08 [0.200] 11.50 [0.453] 9 . 0 0 [ 0 . 3 5 4 ] 123 note: grid:2.54*2.54mm. k78xx-2000 3 2 1 5 . 0 8 [ 0 . 2 0 0 ] 1.35 [0.053] 1 .00 [ 0.039] 1 1 . 5 0 [ 0 . 4 5 3 ] 17.50 [0.689] k78xx-2000l (bottom view) note: unit:mm[inch] pin section tolerances: 0.10mm[ 0.004inch] general tolerances: 0.25mm[ 0.010inch] note: 1. all specifications measured at ta=25 c, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 2. only typical models listed, other models may be different, please contact our technical person for more details. 3. in this datasheet, all the test methods of indications are based on corporate standards.
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