wrn78xx-2000(b) wrn78xx-2000(b) wrn78xx-2000(b) wrn78xx-2000(b) wrn78xx-2000(b) wrn78xx-2000(b) wrn78xx-2000(b) wrn78xx-2000(b) series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 1 of 4 product product product product product product product product program program program program program program program program part part part part number number number number input input input input voltage(vdc) voltage(vdc) voltage(vdc) voltage(vdc) output output output output efficiency efficiency efficiency efficiency (%,typ) (%,typ) (%,typ) (%,typ) nominal nominal nominal nominal range range range range voltage voltage voltage voltage (vdc) (vdc) (vdc) (vdc) current current current current (ma) (ma) (ma) (ma) vin vin vin vin (min.) (min.) (min.) (min.) vin vin vin vin (max.) (max.) (max.) (max.) wrn781.5-2000 12 4.75-18 1.5 2000 79 76 wrn781.8-2000 12 4.75-18 1.8 2000 81 79 wrn782.5-2000 12 4.75-18 2.5 2000 85 83 wrn7803-2000 12 4.75-18 3.3 2000 87 86 wrn7805-2000 12 7-18 5 2000 91 88 wrn786.5-2000 12 8.5-18 6.5 2000 92 91 wrn781.5-2000b 12 4.75-18 1.5 2000 79 76 wrn781.8-2000b 12 4.75-18 1.8 2000 81 79 wrn782.5-2000b 12 4.75-18 2.5 2000 85 83 wrn7803-2000b 12 4.75-18 3.3 2000 87 86 wrn7805-2000b 12 7-18 5 2000 91 88 wrn786.5-2000b 12 8.5-18 6.5 2000 92 91 add suffix "b" for 90 bend pins, for example: wrn 7805-2000 b . model model model model model model model model selection selection selection selection selection selection selection selection wr wr wr wr wr wr wr wr n78 n78 n78 n78 n78 n78 n78 n78 05 05 05 05 05 05 05 05 - - - - - - - - 2000 2000 2000 2000 2000 2000 2000 2000 (b) (b) (b) (b) product series output voltage output current bend 90 pins wide wide wide wide input input input input non-isolated non-isolated non-isolated non-isolated & & & & regulated regulated regulated regulated single single single single output output output output features features features features features features features features 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 sip3 package ul94-v0 requirement ultra low power loss industry standard pinout pin-out compatible with wrn78xx l inear mtbe>2000,000hours applications applications applications applications applications applications applications applications the wrn 78xx- 2 000( b ) series switching regulators are ideal replacement for wrn78xx linear regulators.. 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. microdc reserves the copyright output output output output output output output output specification specification specification specification specification specification specification specification s s s s s s s s item item item item test test test test conditions conditions conditions conditions min. min. min. min. typ. typ. typ. typ. max. max. max. max. units units units 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 output current limit 5000 ma switching frequency full load, input voltage range 300 340 380 khz quiescent current 5 10 ma temperature coefficient -40 ~ +85 ambient 0.03 %/ max capacitance load 1000 f *test ripple and noise by "p arallel cable " method. common common common common common common common common specification specification specification specification specification specification specification specification s s s s s s s s operating temp. range -40~+85 above 71 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 **1.5mm from case for 10 seconds note:
wrn78xx-2000(b) wrn78xx-2000(b) wrn78xx-2000(b) wrn78xx-2000(b) wrn78xx-2000(b) wrn78xx-2000(b) wrn78xx-2000(b) wrn78xx-2000(b) series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 2 of 4 typical typical typical typical typical typical typical typical charecteristics charecteristics charecteristics charecteristics charecteristics charecteristics charecteristics charecteristics (figure 1) external external external external external external external external capacitor capacitor capacitor capacitor capacitor capacitor capacitor capacitor tabl tabl tabl tabl tabl tabl tabl tabl part number c1 (ceramic capacitor) c2 (ceramic capacitor) wrn 7801-2000( b ) 10 f /25v 22 f /6.3v wrn 78x2-2000( b ) 10 f /25v 22 f /6.3v wrn 7802-2000( b ) 10 f /25v 22 f /6.3v wrn 7803-2000( b ) 10 f /25v 22 f /6.3v wrn 7805-2000( b ) 10 f /25v 22 f /16v wrn 78x6-2000( b ) 10 f /25v 22 f /16v typical typical typical typical typical typical typical typical application application application application application application application application circuit circuit circuit circuit circuit circuit circuit circuit 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 input input input input input input input filter filter filter filter filter filter filter filter circuit circuit circuit circuit circuit circuit circuit circuit connect connect connect connect connect connect connect connect (figure 3) output output output output output output output output filter filter filter filter filter filter filter filter circuit circuit circuit circuit circuit circuit circuit circuit connect connect connect connect connect connect connect connect (figure 4) emc emc emc emc emc emc emc emc recommended recommended recommended recommended recommended recommended recommended recommended circuit circuit circuit circuit circuit circuit circuit circuit (figure 5)
wrn78xx-2000(b) wrn78xx-2000(b) wrn78xx-2000(b) wrn78xx-2000(b) wrn78xx-2000(b) wrn78xx-2000(b) wrn78xx-2000(b) wrn78xx-2000(b) series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 3 of 4 otest otest otest otest otest otest otest otest configurations configurations configurations configurations configurations configurations configurations configurations (ta=25 (ta=25 (ta=25 (ta=25 (ta=25 (ta=25 (ta=25 (ta=25 ) ) ) ) ) ) ) ) 1 efficiency and output voltage ripple test (figure 6) 2 start-up and load transient response test (figure 7) characteristics characteristics characteristics characteristics characteristics characteristics characteristics characteristics curve curve curve curve curve curve curve curve
wrn78xx-2000(b) wrn78xx-2000(b) wrn78xx-2000(b) wrn78xx-2000(b) wrn78xx-2000(b) wrn78xx-2000(b) wrn78xx-2000(b) wrn78xx-2000(b) series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 4 of 4 outline outline outline outline outline outline outline outline dimensions dimensions dimensions dimensions dimensions dimensions dimensions dimensions & & & & & & & & footprint footprint footprint footprint footprint footprint footprint footprint details details details details details details details details mechanical mechanical mechanical mechanical mechanical mechanical mechanical mechanical dimensions dimensions dimensions dimensions dimensions dimensions dimensions dimensions recommended recommended recommended recommended recommended recommended recommended recommended footprint footprint footprint footprint footprint footprint footprint footprint wrn wrn wrn wrn 78xx-2000 78xx-2000 78xx-2000 78xx-2000 note: unit:mm[inch] pin section tolerances: 0.10mm[ 0.004inch] general tolerances: 0.25mm[ 0.010inch] wrn wrn wrn wrn 78xx-2000 78xx-2000 78xx-2000 78xx-2000 b b b b note: unit:mm[inch] pin section tolerances: 0.10mm[ 0.004inch] general tolerances: 0.25mm[ 0.010inch] wrn wrn wrn wrn 78xx-2000 78xx-2000 78xx-2000 78xx-2000 wrn wrn wrn wrn 78xx-2000 78xx-2000 78xx-2000 78xx-2000 b b b b note: grid:2.54*2.54mm. tube tube tube tube tube tube tube tube outline outline outline outline outline outline outline outline dimensions dimensions dimensions dimensions dimensions dimensions dimensions dimensions wrn78xx-2000 wrn78xx-2000 wrn78xx-2000 wrn78xx-2000 wrn78xx-2000b wrn78xx-2000b wrn78xx-2000b wrn78xx-2000b 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 note: 1. all specifications measured at ta=25 , 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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