the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice. k78uxx-500(l) a/2-2012 page 1 of 4 k78uxx-500(l) series wide input non-isolated & regulated single output rohs product program input voltage(vdc) output efficiency(%)(typ.) current(ma) part number nominal range voltage (vdc) min. max. vin (min.) vin (max.) k78u03-500(l) 9.0~72.0 3.3 10 500 82 75 k78u05-500(l) 9.0~72.0 5.0 10 500 87 81 k78ux6-500(l) 9.0~72.0 6.5 10 500 91 84 k78u09-500(l) 14.0~72.0 9.0 10 500 92 86 k78u12-500(l) 17.0~72.0 12.0 10 500 93 89 k78u15-500(l) 20.0~72.0 15.0 10 500 94 90 k78u24-300(l) 48 36.0~72.0 24.0 6 300 95 91 note: add suffix l for 90 ben d pins , for example: k78u05 - 500l. output specifications item test conditions min. typ. max. units output voltage accuracy 100% full load 2 3 line regulation vin=min. to max. at full load 0.4 1.0 load regulation* from 10% to 100% load 0.3 0.6 % ripple& noise 20mhz bandwidth ,from 10% to 100% load (refer to figure 2 ) 20 60 mvp-p short circuit input power vin=nominal 0.72 1.2 w short circuit protection continuous, automatic thermal shutdown 160 c switching frequency 100% full load 120 800 khz output current limit vin=nominal 700 1200 quiescent current vin=nominal , min. load 1 5 ma temperature coefficient -40 c ~ +85 c ambient 0.015 %/ c 100 mv tendencies load from 10% to 100% load 1.0 1.5 ms max capacitance load 100 f note: gnd pin can not vacant, or it will damage the module. common specifications item test conditions min. typ. max. units storage humidity 95 % operating temperature power derating (above 71 c) -40 85 operating case temp. 65 100 storage temperature -55 125 lead temperature 1.5mm from case for 10 seconds 300 c cooling free air convection case material plastic (ul94-v0) 25 mil-hdbk-217f 3500 mtbf 71 mil-hdbk-217f 1500 k hours hop swap not supported thermal resistance 60 c/w emi conducted refer to figure 5 rfi conducted en55022, class b electrostatic discharge iec/en 61000-4-2 level 4 safety approvals en-60950-1 standards weight 4 g features efficiency up to 95% ultra wide input voltage range can up to 8:1 operating temperature: -40 c ~ +85 c pin-out compatible with lm78xx linear short circuit protection, thermal shutdown low ripple and noise micro miniature sip package, meet ul94- v0 requirement no heatsink required industry standard pinout mtbe>2,000,000hours applications the k78uxx-500(l) series high efficiency switchin g regulators are ideally suited to replace lm78xx linear regulators and are pin compatible. it has ultra wide input voltage range ,t he efficiency of up to 95% means that very little energy is wasted as heat so there is no need for any heatsinks with their additional space and mounting costs. model selection k78u05-500 ultra wideinputvoltage outputvoltage outputcurrent productseries 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. k78uxx-500(l) a/2-2012 page 2 of 4 typical charecteristics typical application circuit operating temp.( ) c temperature derating graph figure 1 k78uxx-500(l) 1 2 3 +vin gnd +vout gnd c1 figure 2 note: 1. the regulator proposed to establish the input voltage by soft-start, no plug and play, if the input voltage changes from low voltage to high voltage abruptly, the regulator might be damaged. 2. if the applications is high-voltage input, the regulator must add an external capacitor c1( 47 f/100v),to prevent voltage spikes caused by damage to the module. 3. no parallel connection. application example modules protect recommended circuit high voltage input, multiple outputs, with greater load k78u12-500(l) 1 2 3 +vin gnd gnd k7805-1000(l) 10 f +5v/850ma c1 c2 +12v/100ma reverseprotection (figure 3) note: 1. the input current amount of the back-grade regulator and the pre-class load should be less than or equal the max load current of the pre-class regulator. 2. if further filtering is required, please add components as per the above circuit(we recommend not to add components), if request, please make sure the capacitors c1 47 f,c2 10 f more close to the back-grade regulator. k78uxx-500l () +vin +vout gnd gnd 1 3 2 k78uxx-500l () +vin +vout- gnd gnd 1 3 2 schottky diode vout= 0.3v (figure4) emc recommended circuit +vin gnd 1.0f f-3.3 0.5mh-2mh 0.68 f-2.2f vin +vout gnd 270f-4 70 f r l 0.5mh-2mh 1 2 3 (figure 5) test configurations (ta=25 c) 1 full load output ripple & noise measured graph 2 load transient response waveform (figure 6) (figure 7)
the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice. k78uxx-500(l) a/2-2012 page 3 of 4 characteristics curve efficiency ripple efficiency vs input voltage curve (full load) 50 55 60 65 70 75 80 85 90 95 100 91521273339455157636972 input voltage(v) efficiency(%) k78u03-500 k78u05-500 k78ux6-500 k78u09-500 k78u12-500 k78u15-500 k78u24-300 ripple vs load curve(vin=vmax) 0 5 10 15 20 25 30 0102030405060708090100 load(%) ripple(mv) k78u03-500 k78u05-500 k78ux6-500 k78u09-500 k78u12-500 k78u15-500 k78u24-300 efficiency vs load curve(vin=vin-nominal) 50 55 60 65 70 75 80 85 90 95 100 102030405060708090100 load(%) efficiency(%) k78u03-500 k78u05-500 k78ux6-500 k78u09-500 k78u12-500 k78u15-500 k78u24-300 ripple vs load curve(vin=vin-nominal) 0 5 10 15 20 25 30 0102030405060708090100 load(%) ripple(mv) k78u03-500 k78u05-500 k78ux6-500 k78u09-500 k78u12-500 k78u15-500 k78u24-300 efficiency vs load curve(vin=vmin) 50 55 60 65 70 75 80 85 90 95 100 102030405060708090100 load(%) efficiency(%) k78u03-500 k78u05-500 k78ux6-500 k78u09-500 k78u12-500 k78u15-500 k78u24-300 ripple vs load curve(vin=vmin) 0 5 10 15 20 25 30 0102030405060708090100 load(%) ripple(mv) k78u03-500 k78u05-500 k78ux6-500 k78u09-500 k78u12-500 k78u15-500 k78u24-300
the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice. k78uxx-500(l) a/2-2012 page 4 of 4 outline dimensions & footprint details 1 3 2 +vin gnd +vout footprint details 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 11.60[0.457] 2 7 . 1 0 [ 1 . 0 6 7 ] 2 0 . 6 [ 0 . 8 1 1 ] 6.60 [0.260] k78uxx-500l 11.40[0.449] 2 3 . 4 0 [ 0 . 9 2 1 ] 2 0 . 4 0 [ 0 . 8 0 3 ] 11.00[0.433] 16.00[0.630] k78uxx-500 k78uxx-500l k78uxx-500 4 . 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 . 5 0 [ 0 . 0 2 0 ] 0.55 [0.022] 2 . 1 5 [ 0 . 0 8 5 ] 123 9.00 [0.354] 1 7 . 5 0 [ 0 . 6 8 9 ] 0 . 3 0 [ 0 . 0 1 2 ] 1 9 . 0 0 [ 0 . 7 4 8 ] 1 .00 [ 0.039] 123 note: grid:2.54*2.54mm. k78uxx-500 3 2 1 1 .00 [0.039] k78uxx-500l (bottom view) (front view) (front view) note: unit:mm[inch] pin section tolerances: 0.10mm[ 0.004inch] general tolerances: 0.25mm[ 0.010inch] 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] 11.50 [0.453] 5.08 [0.200] 0.55 [0.022] 4 . 1 0 [ 0 . 1 6 1 ] 123 0 . 5 0 [ 0 . 0 2 0 ] note: 1. the load shouldn't be less than 10%, and the output external capacitor should not be too large (recommend <10 f), otherwise ripple will increase dramatically. 2. operation under 10% load will not damage the converter; however, they may not meet all specification listed 3. all specifications measured at ta=25 c, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 4. in this datasheet, all the test methods of indications are based on corporate standards.
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