the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice. k78xxt-1000 a/0-2011 page 1 of 5 k78xxt-1000 series wide input, non-isolated & regulated smd package single output patent protection rohs features product program input voltage (v) output voltage (v) efficiency (%)(typ.) part number nominal range input current (ma) normal adjust range output current (ma) vin (min.) vin(max.) k7801t-1000* 12 5.0-18 165 1.5 fixed 1000 76 73 k78x2t-1000* 12 5.0-18 190 1.8 1.5-3.6 1000 78 75 k7802t-1000* 12 5.0-18 245 2.5 1.5-3.9 1000 82 82 k7803t-1000 12 5.0-18 320 3.3 1.8-5.5 1000 84 84 K7805T-1000 12 7.0-18 460 5.0 2.5-6.5 1000 90 88 k78x6t-1000* 12 8.5-18 580 6.5 fixed 1000 92 91 note:to adjust the output voltage must be met vin-vo>2v. *designing. input current measured at nominal input voltage and rated output load. in put specifications item test conditions min. typ. max. units input filter capacitor (10 f) start current(rms) 0.95 1.1 a output specifications item test conditions min. typ. max. units output voltage accuracy 2 3 line regulation input voltage range at full load 0.2 0.5 load regulation nominal input,10% to 100% load 0.4 1.0 % 20mhz bandwidth 20 35 ripple and noise* 20mhz bandwidth (refer to figure 6) 10 15 mvp-p short circuit protection mode hiccup mode short circuit protection continuous, automatic recovery inside wasted 0.5 w thermal shutdown internal ic junction 150 c output current limit 1.8 a switching frequency pwm type 1.4 mhz transient peak deviation 75 100 mv transient recovery time input voltage range, 10% to 100% load 100 s quiescent current 1 3 ma temperature coefficient -40 c ~ +85 c ambient 0.02 %/ c max capacitance load 1000 f on open or 1.2K7805T-1000 output current package style output voltage product series 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 lead temperature 1.5mm from case for 10 seconds 260 o c cooling free air convection
the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice. k78xxt-1000 a/0-2011 page 2 of 5 common specifications typical temperature curve item test conditions min. typ. max. units case material plastic (ul94-v0) mtbf (mil-hdbk-217f,+25 c) 1000 k hours hop swap not supported thermal resistance 90 /w weight 2.3 g emc specifications en55022, class a(without external circuit) ce en55022, class b(refer to figure 4) re en55022, class a(refer to figure 5) esd iec/en61000-4-2 air 8kv / contact 6kv perf. criteria b eft iec/en61000-4-4 2kv perf. criteria b surge iec/en61000-4-5 2kv perf. criteria b(refer to figure 4) typical application circuit o u t p u t p o w e r ( % ) 0 20 40 60 80 100 120 -40 0 40 85 120 operating temp.() c 71 safe operating area temperature derating graph (figure2) recommended reflow soldering profile K7805T-1000 1 7,9 5 vin gnd vout c2 c1 6 10 on/off r1 r2 gnd 470pf c4 (figure 1) 1. c1, c2 is required for best performance 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 tantalum or low esr electrolytic capacitors may also suffice. 3. no parallel connection or plug and play. external capacitor table part number c1 (ceramic capacitor) c2 (ceramic capacitor) k7803t-1000 10 f/25v 22 f/16v K7805T-1000 10 f/25v 22 f/16v (figure 3) adjustment resistor values the r1, r2 in the above table are used to set the output voltage. if no need to adjust the output voltage, connect a ceramic capacitor to gnd with 470pf typical value for increase immunity. insure the output voltage is in the adjust range or else may cause permanent damage to the device. fine-tune output voltage must appease vin-vo>2v. part number k7803t-1000 K7805T-1000 vo (nominal) 3.3(v) 5.0(v) vadj(v) r1(k ) r2(k ) r1(k ) r2(k ) 1.8 15.4 - - - 2.5 87 - 9.7 - 3.0 339 - 30.5 - 3.3 - - 48.8 - 3.6 - 121 75 - 3.9 - 51.0 115 - 4.5 - 16.6 338 - 4.9 - 8.0 1835 - 5.0 - 6.5 - - 5.1 - 5.2 - 426 5.5 - 1.1 - 58.7 6.0 - - - 16.9 6.5 - - - 3.2 0 50 100 150 200 250 time (sec.) 90 max (>220 c) sec 220 c 10 max sec peak.temp 240 c t e m p e r a t u r e ( c )
the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice. k78xxt-1000 a/0-2011 page 3 of 5 emc recommended circuit K7805T-1000 1 7,9 5 +vin gnd c1 6 10 on/off 470pf c2 tvs l1 rl +vo gnd (figure 4) specifications tvs smcj18a,1500w l1 68 h c1 680 f/50v electrolytic capacitors K7805T-1000 1 7,9 5 +vo gnd c3 6 10 on/off 470pf c4 rl l2 gnd +vin (figure 5) specifications l2 516 h c3 1 f/50v ceramic capacitor test configurations (ta=25 c) 1 efficiency and output voltage ripple test scope c e r a m i c 7, 9 5 vin gnd +vout c2 c1 25.4mm 1 2 . 5 4 m m dc/dc converter 470pf 6 c4 25.4mm 12.7mm 1f 10f copper strip copper strip t a n t a l u m ceramic l o a d (figure 6) 2 start-up and load transient response test scope ceramic 7,9 5 vin gnd +vout c2 c1 50.8 mm 1 2 . 5 4 m m dc/dc converter 470pf 6 c4 copper strip copper strip l o a d (figure 7) application example 7,9 5 vin gnd +vout 1 dc/dc converter c1 22f 6 c4 470pf l o a d l c2 (figure 8) to reduce output ripple, it is recommended to add a lc filter to output port. l: recommended parameter 10 h ~ 47 h.
the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice. k78xxt-1000 a/0-2011 page 4 of 5 characteristic curve efficiency ripple efficiency vs.vin(full load) 80 82 84 86 88 90 92 56789101112131415161718 vin(v) efficiency(%) k7803t-1000 K7805T-1000 ripple vs.vin(full load) 0 5 10 15 20 25 30 5678 9101112131415161718 vin(v) rippple(mv) k7803t-1000 K7805T-1000 efficiency vs.load(vin=vin-nominal) 74 76 78 80 82 84 86 88 90 92 0 1002003004005006007008009001000 load(ma) efficiency(%) k7803t-1000 K7805T-1000 ripple vs.load(vin=vin-nominal) 0 5 10 15 20 25 01002003004005006007008009001000 load(ma) ripple(mv) k7803t-1000 K7805T-1000 emc testing wave shape ce(without external circuit) ce(refer to figure 4)
the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice. k78xxt-1000 a/0-2011 page 5 of 5 outline dimensions & recommended footprint &packaging pin footprint details note: unit:mm[inch] pin tolerances:0.10mm[0.004inch] general tolerances:0.25mm[0.010inch] note: unit :mm[inch] general tolerances: 0.50mm[ 0.020inch] devices per reel quantity:500pcs devices per tube quantity: 2000pcs devices per tube quantity: 4000pcs inner packagingdimensions: l*w*h=365*350*105mm outer packagingdimensions: l*w*h=390*360*245mm. ; function note: unit :mm[inch] general tolerances: 0.50mm[ 0.020inch] l=530mm[20.866inch] devices per tube quantity: 33pcs l=220mm[8.661inch] devices per tube quantity: 13pcs taping dimension: taping reel dimension: 1 5 7,9 6 10 vadj vin gnd on/off vout ??? ? 1.50 [0.059] ? 1.50 [0.059] ? 13.00 [0.512] ? 21.50 [0.846] 109 7 6 1 5 1 1 . 0 2 [ 0 . 4 3 4 ] 2.54 [0.100] 1.80 [0.071] 2.54 [0.100] 1.00 [0.039] 7.25 [0.285] 7.00 [0.276] 2.54 [0.100] 12.10 [0.476] 8.50 [0.335] 10.16 [0.400] 15.24 [0.600] 109 7 6 1 5 1.13 [0.044] 5 max 0.25 [0.010] 14.70[0.579] 10.20[0.402] 5.60 [0.220] 6.50 [0.256] 8 . 2 0 [ 0 . 3 2 3 ] 1 0 . 2 0 [ 0 . 4 0 2 ] 2.00 [0.079] 1.75 [0.069] 11.50 [0.453] 0.50 [0.020] 7.65 [0.301] 16.00 [0.630] 12.40 [0.488] 1 5 . 6 5 [ 0 . 6 1 6 ] 29.40 [1.157] ? 100.00[3.937] ? 3 3 0 . 0 0 [ 1 2 . 9 9 2 ] a a 2 4 . 0 0 [ 0 . 9 4 5 ] mechanical dimensions recommended footprint tube outline dimensions tapingreel dimensions (side view) (top view) 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: 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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