WRN78VXX-1000 WRN78VXX-1000 WRN78VXX-1000 WRN78VXX-1000 WRN78VXX-1000 WRN78VXX-1000 WRN78VXX-1000 WRN78VXX-1000 series series http ://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 1 of 3 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) wrn78v1.8-1000 5 - 42 1.8 1000 80 71 wrn78v03-1000 7 - 42 3.3 1000 89 79 wrn78v05-1000 8 - 42 5 1000 93 85 wrn78v09-1000 12 - 42 9 1000 95 90 wrn78v12-1000 15-42 12 1000 96 92 wrn78v15-1000 18-42 15 1000 96 94 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 v v v v v v v v 05 05 05 05 05 05 05 05 - - - - - - - - 1000 1000 1000 1000 1000 1000 1000 1000 product series very wide input range output voltage output current microdc reserves the copyright very very very very 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 96 % ,no need for heat sink pin-out compatible with wrn78xx linear low profile (l*w*h=11.6 10.2 7.5mm) very wide input range(5v~42v) s hort circuit protection , thermal shutdown non standard outputs available as specials low ripple and noise description description description description description description description description the wrn 78 v xx- 10 00 series switching r egulators are ideally suited to replace 1amp wrn 78xx linear regulators and are pin compatible. the efficiency of up to 96% means that very little energy is wasted as heat and the high input voltage is a useful feature. specification specification specification specification specification specification specification specification s s s s s s s s typical typical typical typical typical typical typical typical at at at at at at at at 25 25 25 25 25 25 25 25 ,10% ,10% ,10% ,10% ,10% ,10% ,10% ,10% minimum minimum minimum minimum minimum minimum minimum minimum load,unless load,unless load,unless load,unless load,unless load,unless load,unless load,unless otherwise otherwise otherwise otherwise otherwise otherwise otherwise otherwise specified specified specified specified specified specified specified specified 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 in put voltage range all series vo+3 42 v output voltage range all series 1.8 15 v output current all series 0 1 . 0 a output current limit all series 3.0 a short circuit input current(vin=24v) all series 65ma no load input current 1 ma short circuit protection continuous, automatic recovery output voltage accuracy(100% load) all series 2 3 % line regulation(100% load,vin max) all series 0.2 % load regulation(10 to 100% full load) all series 0.4 % dynamic load stability 100%<->50% load 100%<->10% load 75 200 mv ripple & noise (20mhz bw limited) vin = 24v, vout = 1.8v-15 v 75 100 mvp-p with 10 f mlcc output capacitor full load 30 mvp-p temperature coefficient -40 c ~ +85 c ambien t 0.015 %/ max capacitance load with normal start-up time,no external components 470 f switching frequency 350khz operating temperature range -40 85 maximum case temperature 100 storage temperature range -55 125 case thermal impedance 70 /w thermal shutdown internal ic junction 160 conducted emissions (with filter) radiated emissions (with filter) esd radiated immunity fast transient conducted immunity magnetic field immunity en55022 en55022 en61000-4-2 en61000-4-3 en61000-4-4 en61000-4-6 en61000-4-8 class b class b class a class a class a class a class a package weight 2g packing quantity 42 pcs per tube product product product product product product product product id id id id id id id id description description description description description description description description
WRN78VXX-1000 WRN78VXX-1000 WRN78VXX-1000 WRN78VXX-1000 WRN78VXX-1000 WRN78VXX-1000 WRN78VXX-1000 WRN78VXX-1000 series series http ://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 2 of 3 derating-graph derating-graph derating-graph derating-graph derating-graph derating-graph derating-graph derating-graph a a a a m m m m bient bient bient bient temperature temperature temperature temperature application application application application application application application application examples examples examples examples examples examples examples examples high high high high efficiency efficiency efficiency efficiency regulated regulated regulated regulated outputs outputs outputs outputs c1: c1: c1: c1: optional, optional, optional, optional, c2: c2: c2: c2: required required required required (further (further (further (further decoupling decoupling decoupling decoupling filtering filtering filtering filtering may may may may be be be be necessary necessary necessary necessary between between between between the the the the two two two two converters) converters) converters) converters) specifications specifications specifications specifications specifications specifications specifications specifications typical typical typical typical typical typical typical typical application application application application application application application application circuit circuit circuit circuit circuit circuit circuit circuit certifications general safety standby power en 60950-1:2006+a11 2009+a1 2010 en62301 2005 mtbf (+25 ) (+68 ) using mil - hdbk 217f using mil - hdbk 217f 8600 x 10 3 hours. 388 0 x 10 3 hours. high high high high efficiency efficiency efficiency efficiency regulated regulated regulated regulated outputs outputs outputs outputs use use use use soft soft soft soft start start start start supply supply supply supply high high high high efficiency efficiency efficiency efficiency regulated regulated regulated regulated outputs outputs outputs outputs -low -low -low -low voltage voltage voltage voltage ac ac ac ac input,regulated input,regulated input,regulated input,regulated dc dc dc dc output output output output c2: c2: c2: c2: optional optional optional optional -regulated -regulated -regulated -regulated and and and and protected protected protected protected dc dc dc dc output output output output - - - - triple triple triple triple outputs outputs outputs outputs - - - - wide wide wide wide input input input input range range range range 8v 8v 8v 8v to to to to 42v 42v 42v 42v - - - - high high high high system system system system efficiency, efficiency, efficiency, efficiency, suitable suitable suitable suitable for for for for 12v, 12v, 12v, 12v, 24v 24v 24v 24v or or or or 36v 36v 36v 36v battery battery battery battery powered powered powered powered devices devices devices devices
WRN78VXX-1000 WRN78VXX-1000 WRN78VXX-1000 WRN78VXX-1000 WRN78VXX-1000 WRN78VXX-1000 WRN78VXX-1000 WRN78VXX-1000 series series http ://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 3 of 3 package package package package package package package package style style style style style style style style and and and and and and and and pinning pinning pinning pinning pinning pinning pinning pinning (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm) note: unit:mm[inch] pin section tolerances: 0.10mm[ 0.004inch] general tolerances: 0.25mm[ 0.010inch] 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; footprint details pin function 1 +vin 2 gnd 3 +vout xx.x 0.5mm xx.xx 0.25mm pin connections
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