wrn78xxm-1000 wrn78xxm-1000 wrn78xxm-1000 wrn78xxm-1000 wrn78xxm-1000 wrn78xxm-1000 wrn78xxm-1000 wrn78xxm-1000 series series http ://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 1 of 4 selection selection selection selection selection selection selection selection guide guide guide guide guide guide guide guide part number input output efficiency (%,typ) voltage range (vdc) voltage (vdc) current (ma) vin(min) vin(max) wrn781.5m-1000 4.75- 1 8 1.5 1000 78 72 wrn781.8m-1000 4.75- 18 1.8 1000 82 76 wrn782.5m-1000 4.75- 18 2.5 1000 87 82 wrn7803m-1000 4.75- 20 3.3 1000 90 83 wrn7805m-1000 6.5-20 5.0 1000 93 85 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 m m m m m m m m - - - - - - - - 1000 1000 1000 1000 1000 1000 1000 1000 product series output voltage miniature sip3 package output current microdc r eserves the copyright wide wide wide wide input, input, input, input, non- non- non- non- isolated isolated isolated isolated regulated regulated regulated regulated s s s s ingle ingle ingle ingle o o o o utput utput utput utput sip sip sip sip 3 3 3 3 dc/dc dc/dc dc/dc dc/dc c c c c onverter onverter onverter onverter features features features features features features features features efficiency up to 93 % operating tem.range: -40 c ~ 85 c pin-out compatible with wrn78xx linear short circuit protection , thermal shutdown low ripple and noise micro miniature sip3 package,meet ul94-vo requirement no heatsink required industry standard pinout mtbe>2000khours description description description description description description description description the wrn 78xx m - 10 00 series high efficiency switching r egulators are ideally suited to replace 78xx linear regulators and are pin compatible. the efficiency of up to 93% means that very little energy is wasted as heat so there is no need tor any heat sinks with their additional space and mounting costs. output output output output output output output output specification specification specification specification specification specification specification specification s s s s s s s s ltem ltem ltem ltem 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 3) 25 45 mvp-p short circuit protection continuous, automatic recovery thermal shutdown internal ic junction 150 c output current limit 3000 ma switching frequency full load,input voltage range 335 385 435 khz dynamic load stability 100 mv quiescent current vin from min to max and at 0% load 7 10 ma temperature coefficient -40 c ~ +85 c ambient 0.02 %/ max capacitance load 1000 f * wrn7803m-1000 is 3.5%(max) common common common common common common common common specification specification specification specification specification specification specification specification s s s s s s s s ltem ltem ltem ltem test test test test conditions conditions conditions conditions min. min. min. min. typ. typ. typ. typ. max. max. max. max. units units units units storage humidity range 95 % operating temp. range power derating (above 71 ) -40 85 storage temp. range -55 125 operating case temp. 100 lead temperature 1.5mm from case for 10 seconds 300 cooling free air convection case material plastic (ul94-v0) mtbf ( 25 c mil-hdbk-217f ) 2000 k hours weight 2.0 g 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. if you need other model, please confirm the power, input voltage and output voltage, then phone us. product product product product product product product product id id id id id id id id description description description description description description description description
wrn78xxm-1000 wrn78xxm-1000 wrn78xxm-1000 wrn78xxm-1000 wrn78xxm-1000 wrn78xxm-1000 wrn78xxm-1000 wrn78xxm-1000 series series http ://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 2 of 4 e e e e e e e e xternal xternal xternal xternal xternal xternal xternal xternal capacitor capacitor capacitor capacitor capacitor capacitor capacitor capacitor table table table table table table table table p p p p art art art art number number number number c1,c3 c1,c3 c1,c3 c1,c3 (ceramic (ceramic (ceramic (ceramic capacitor) capacitor) capacitor) capacitor) c2,c4 c2,c4 c2,c4 c2,c4 (ceramic (ceramic (ceramic (ceramic capacitor) capacitor) capacitor) capacitor) wrn781.5m-1000 10uf/ 2 5v 22uf/6.3v wrn781.8m-1000 10uf/ 2 5v 22uf/6.3v wrn782.5m-1000 10uf/ 2 5v 22 uf/10v wrn7803m-1000 10uf/ 2 5v 22 uf/16v wrn7805m-1000 10uf/ 2 5v 22 uf/16v typical typical typical typical typical typical typical typical characteristics characteristics characteristics characteristics characteristics characteristics characteristics characteristics temperature temperature temperature temperature derating derating derating derating graph graph graph graph (figure (figure (figure (figure 1) 1) 1) 1) test test test test test test test test 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 1 1 1 efficiency efficiency efficiency efficiency and and and and output output output output voltage voltage voltage voltage ripple ripple ripple ripple test test test test (figure (figure (figure (figure 3) 3) 3) 3) 2 2 2 2 start-up start-up start-up start-up and and and and load load load load transient transient transient transient response response response response test test test test (figure (figure (figure (figure 4) 4) 4) 4) the copyright and authority for the interpretation of the products are reserved by m icrodc specifications subject to change without notice typical typical typical typical typical typical typical typical application application application application application application application application circuit circuit circuit circuit circuit circuit circuit circuit (figure 2) note: 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 tantalum or low esr electrolytic capacitors may also suffice. 3.no parallel connection or plug and play.
wrn78xxm-1000 wrn78xxm-1000 wrn78xxm-1000 wrn78xxm-1000 wrn78xxm-1000 wrn78xxm-1000 wrn78xxm-1000 wrn78xxm-1000 series series http ://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 3 of 4 output output output output output output output output ripplw ripplw ripplw ripplw ripplw ripplw ripplw ripplw reduction reduction reduction reduction reduction reduction reduction reduction to to to to reduce reduce reduce reduce output output output output ripple,it ripple,it ripple,it ripple,it is is is is recommended recommended recommended recommended to to to to add add add add a a a a lc lc lc lc filter filter filter filter in in in in output output output output port port port port l:recommended l:recommended l:recommended l:recommended parameter parameter parameter parameter 10 10 10 10 h~47 h~47 h~47 h~47 h. h. h. h. (figure (figure (figure (figure 5) 5) 5) 5) characteristics characteristics characteristics characteristics characteristics characteristics characteristics characteristics efficiency vs vin(full load) ripple vs vin(full load) efficiency vs load ( vin=vin-nominal ) ripple vs load ( vin=vin-nominal ) efficiency ripple efficiency ripple(mv) efficiency ripple(mv)
wrn78xxm-1000 wrn78xxm-1000 wrn78xxm-1000 wrn78xxm-1000 wrn78xxm-1000 wrn78xxm-1000 wrn78xxm-1000 wrn78xxm-1000 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 note: 1. all specifications measured at ta=25 , h u midity<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. recommended recommended recommended recommended footprint footprint footprint footprint note:grid 2.54*mm tube tube tube tube outline outline outline outline dimensions dimensions dimensions dimensions note: unit:mm[inch] general tolerances: 0.50mm:[0.020inch] l=530mm[20.866inch] packaging quantity:43 pcs l=220mm[8.661inch] packaging quantity:17 pcs 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; short tube outer packaging dimensions(with three inner packaging boxes): l*w*h=600*215*325mm; mechanical mechanical mechanical mechanical dimensions dimensions dimensions dimensions note: unit:mm[inch] pin section tolerances: 0.10mm[ 0.004inch] general tolerances: 0.25mm[ 0.010inch] footprint details pin function 1 +vin 2 gnd 3 +vout
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