nxj1 series isolated 1w single output sm dc/dc converters kdc_nxj1.a01 page 1 of 10 all enquiries: www.murata-ps.com/support www.murata-ps.com for full details go to www.murata-ps.com/rohs $ www.murata-ps.com selection guide order code 1 nominal input voltage output voltage rated input current output current load regulation (typ) load regulation (max) output ripple & noise (typ) output ripple & noise (max) ef?ciency (min) ef?ciency (typ) switching frequency (typ) isolation capacitance mttf 2 v v ma ma % % mvp-p % % khz pf khrs NXJ1S0303MC 3.3 3.3 400 333 10.5 11.5 75 105 66 69.5 80 2 2430 nxj1s0305mc 3.3 5 400 200 8.5 10 25 45 70 72 90 2.5 3065 nxj1s0505mc 5 5 250 200 12 13.5 20 50 69 73.5 205 2.5 1988 nxj1s1205mc 12 5 110 200 6 8.5 22 45 69 72 110 2.5 2244 nxj1s1212mc 12 12 115 83 4.5 5 15 40 65 71 125 2.5 3473 nxj1s1215mc 12 15 120 67 4 5 15 40 69 71 135 2.5 3208 input characteristics parameter conditions min. typ. max. units voltage range continuous operation, 3v input types 2.97 3.3 3.63 v continuous operation, 5v input types 4.5 5.0 5.5 continuous operation, 12v input types 10.8 12 13.2 input re?ected ripple current 3v input 6 ma p-p 5v input 2 12v input 2 isolation characteristics parameter conditions min. typ. max. units isolation voltage flash tested for 1 minute 4200 vdc resistance viso= 1000vdc 10 g output characteristics parameter conditions min. typ. max. units rated power t a =-40c to 85c 1.0 w voltage set point accuracy see tolerance envelope line regulation high v in to low v in 0505 variant 1.15 1.2 %/% all other variants 1.1 1.2 temperature characteristics parameter conditions min. typ. max. units speci?cation all output types -40 85 c storage -50 125 product temperature rise above ambient all output types 16 cooling free air convection absolute maximum ratings input voltage v in , nxj1s03 types 5.5v input voltage v in , nxj1s05 types 7v input voltage v in , nxj1s12 types 15v 1. components are supplied in tape and reel packaging, please refer to package speci?cation section. orderable part numbers are nxj1s0505mc-r7 (180 pieces per reel), or nxj1s0505mc-r13 (800 pieces per reel). 2. calculated using mil-hdbk-217 fn2 calculation model with nominal input voltage at full load. 3. please refer to short circuit application notes. all speci?cations typical at t a =25c, nominal input voltage and rated output current unless otherwise speci?ed. product overview the nxj1 series is a new range of low cost, lower pro?le, fully automated manufacture surface mount dc/dc converters. the nxj1 series automated manufacturing process with substrate embedded transformer, offers increased product reliability and repeatability of performance in a halogen free, ilga inspectable package. the nxj1 series, industry standard footprint is compatible with existing designs. the nxj1 series has a msl rating 2, and is com- patible with a peak re?ow solder temperature of 245 c as per j-std-020 and j-std-075. features ? patents pending ? lower pro?le ? ul60950 recognition pending ? ansi/aami es60601-1, 2 moop, 1mopp recognition pending ? 4.2kvdc isolation hi pot test ? substrate embedded transformer ? automated manufacture ? industry standard footprint ? short circuit protection 3 ? halogen free
nxj1 series isolated 1w single output sm dc/dc converters kdc_nxj1.a01 page 2 of 10 all enquiries: www.murata-ps.com/support www.murata-ps.com technical notes isolation voltage hi pot test, flash tested, withstand voltage, proof voltage, dielectric withstand voltage & isolation test voltage are all terms that relate to the same thing, a test voltage, applied for a speci?ed time, across a component designed to provide electrical isolation, to verify the integrity of that isola tion. murata power solutions nxj1 series of dc/dc converters are all 100% production tested at their stated isolation voltage. this i s 4.2kvdc for 1 minute. a question commonly asked is, what is the continuous voltage that can be applied across the part in normal operation? for a part holding no speci?c agency approvals, such as the nxj1 series, both input and output should normally be maintained wi thin selv limits i.e. less than 42.4v peak, or 60vdc. the isolation test voltage represents a measure of immunity to transient voltages and the part should never be used as a n element of a safety isolation system. the part could be expected to function correctly with several hundred volts offset applied continuously across the isolation barrier; bu t then the circuitry on both sides of the barrier must be regarded as operating at an unsafe voltage and further isolation/insulation systems must form a barrier between these circui ts and any user-accessible circuitry according to safety standard requirements. repeated high-voltage isolation testing it is well known that repeated high-voltage isolation testing of a barrier component can actually degrade isolation capability, to a lesser or greater degree depending on materials, construction and environment. the nxj1 series has a pcb embedded isolated transformer, using fr4 as an insolation barrier betwe en primary and secondary windings. while parts can be expected to withstand several times the stated test voltage, the isolation capability does depend on the fr4 insulation properties. any material, including fr4 is susceptible to eventual chemical degradation when subject to very high applied voltages thus implying that the number of tests should be st rictly limited. we therefore strongly advise against repeated high voltage isolation testing, but if it is absolutely required, that the voltage should be reduced by 20% from speci ?ed test voltage. this consideration equally applies to agency recognized parts rated for better than functional isolation where the insulation i s always supplemented by a further insulation system of physical spacing or barriers. safety approval ansi/aami es60601-1 the nxj1 series is pending recognition by underwriters laboratory (ul) to meet ansi/aami es60601-1 medical safety standard prov iding the following moop (means of operator protection), and mopp (means of patient protection). 2 moop and 1 mopp based upon a working voltage of 200vrms. ul 60950 the nxj1 series is pending recognition by underwriters laboratory (ul) to ul 60950 for reinforced insulation to a working volta ge of 200vrms. fusing the nxj1 series of converters are not internally fused so to meet the requirements of ul an anti-surge input line fuse should a lways be used with ratings as de?ned below. input voltage, 3.3v: 1a input voltage, 5v: 0.5a input voltage, 12v: 0.25a all fuses should be ul recognized and rated to at least the maximum allowable dc input voltage.
nxj1 series isolated 1w single output sm dc/dc converters kdc_nxj1.a01 page 3 of 10 all enquiries: www.murata-ps.com/support www.murata-ps.com characterisation test methods ripple & noise characterisation method ripple and noise measurements are performed with the following test con?guration. c1 1f x7r m ultilayer ceramic capacitor, voltage rating to be a minimum of 3 times the output voltage of the dc/dc converter c2 10f tantalum capacitor, voltage rating to be a minimum of 1.5 times the output voltage of the dc/dc converter with an esr of l ess than 100m at 100 khz c3 100nf multilayer ceramic capacitor, general purpose r1 450 resistor, carbon ?lm, 1% tolerance r2 50 bnc termination t1 3t of the coax cable through a ferrite toroid rload resistive load to the maximum power rating of the dc/dc converter. connections should be made via twisted wires measured values are multiplied by 10 to obtain the speci?ed values. differential mode noise test schematic oscilloscope y input supply c1 c2 c3 r1 t1 r2 input output dc/dc converter r load + + - - rohs compliance, msl and psl information this series is compatible with pb-free soldering systems and is also backward compatible with sn/pb soldering systems. the nxj1 series has a process, moisture, and re?ow sensitivity classi?cation of msl2 psl r7f as de?ned in j-std-020 and j-std-075. this translates to: msl2 = 1 year ?oor life, psl r7f = peak re?ow temperature 245c with a limitation on the time above liquidus (217c) which for this series is 90sec max. the pin termination ?nish on this product series is gold with a plating thickness of 0.12 microns.
nxj1 series isolated 1w single output sm dc/dc converters kdc_nxj1.a01 page 4 of 10 all enquiries: www.murata-ps.com/support www.murata-ps.com tolerance envelopes the voltage tolerance envelope shows typical load regulation characteristics for this product series. the tolerance envelope is the maximum output voltage variation due to changes in output loading. NXJ1S0303MC nxj1s0305mc nxj1s0505mc nxj1s1205mc nxj1s1212mc nxj1s1215mc 4% 6% 4% 8% 0% 5% output load current (%) output load current (%) output voltage output voltage -10% -5% -5% 1% 100 100 75 75 50 50 25 25 10 10 9% output load current (%) -8% -2% 100 75 50 25 10 0% 3% output load current (%) output load current (%) -4% -2% -1% 2% 100 100 75 75 50 50 25 25 10 10 0% output load current (%) -3% 0% 100 75 50 25 10 output voltage output voltage output voltage output voltage 4% 6%
nxj1 series isolated 1w single output sm dc/dc converters kdc_nxj1.a01 page 5 of 10 all enquiries: www.murata-ps.com/support www.murata-ps.com efficiency vs load 3v input 5v input 12v input 0 10 20 30 40 50 60 70 80 0 102030405060708090100 efficiency (%) load (%) NXJ1S0303MC nxj1s0305mc 0 10 20 30 40 50 60 70 80 0 102030405060708090100 efficiency (%) load (%) nxj1s0505mc 0 10 20 30 40 50 60 70 80 0 102030405060708090100 efficiency (%) load (%) nxj1s1205mc nxj1s1212mc nxj1s1215mc
nxj1 series isolated 1w single output sm dc/dc converters kdc_nxj1.a01 page 6 of 10 all enquiries: www.murata-ps.com/support www.murata-ps.com temperature derating the derating graphs are based on the following air?ow conditions, for a component mounted on a 25mm x 25mm copper covered pcb a nd are provided for information only. actual performance in an application is likely to differ from these results, and a customer should evaluate the thermal e nvironment the nxj1 is used in, to achieve a recommended maximum component surface temperature of 85c for the nxj1s0303sc or 105c for all other variants. NXJ1S0303MC nxj1s0305mc nxj1s0505mc nxj1s1205mc nxj1s1212mc nxj1s1215mc 0 0.2 0.4 0.6 0.8 1 50 60 70 80 still air 100 lfm 200 lfm 400 lfm 0 0.2 0.4 0.6 0.8 1 50 60 70 80 still air 100 lfm 200 lfm 400 lfm 0 0.2 0.4 0.6 0.8 1 50 60 70 80 still air 100 lfm 200 lfm 400 lfm 0 0.2 0.4 0.6 0.8 1 50 60 70 80 still air 100 lfm 200 lfm 400 lfm 0 0.2 0.4 0.6 0.8 1 50 60 70 80 still air 100 lfm 200 lfm 400 lfm power (w) ambient temperature ( c) power (w) ambient temperature ( c) power (w) ambient temperature ( c) power (w) ambient temperature ( c) power (w) ambient temperature ( c) 0 0.2 0.4 0.6 0.8 1 50 60 70 80 still air 100 lfm 200 lfm 400 lfm power (w) ambient temperature ( c)
nxj1 series isolated 1w single output sm dc/dc converters kdc_nxj1.a01 page 7 of 10 all enquiries: www.murata-ps.com/support www.murata-ps.com application notes short circuit performance advisory notes minimum load the nxj1 series is not hermetically sealed, customers should ensure that parts are fully dried before input power application. the minimum load to meet datasheet speci?cation is 10% of the full rated load across the speci?ed input voltage range. lower than 10% minimum loading will result in an increase in output voltage, which may rise to typically double the speci?ed output voltage if the output load falls to less than 5%. capacitive loading & start up typical start up times for this series, with a typical input voltage rise time of 2.2s with resistive only load, and with adde d output capacitance of 47f, are shown in the table below. output ripple reduction by using the values of inductance and capacitance stated, the output ripple at the rated load is lowered to 5mv p-p max. component selection capacitor: it is required that the esr (equivalent series resistance) should be as low as possible, ceramic types are recommend ed. the voltage rating should be at least twice (except for 15v output), the rated output voltage of the dc/dc converter. inductor: the rated current of the inductor should not be less than that of the output of the dc/dc converter. at the rated cur rent, the dc resistance of the inductor should be such that the voltage drop across the inductor is <2% of the rated voltage of the dc/dc converter. the srf (self resonant fr equency) should be >20mhz. dc dc l c load power source inductor capacitor l, h smd through hole c, f NXJ1S0303MC nxj1s0305mc nxj1s0505mc nxj1s1205mc nxj1s1212mc nxj1s1215mc resistive load resistive load and 47f part number start-up time (s) NXJ1S0303MC 40 190 nxj1s0305mc 95 1700 nxj1s0505mc 50 1100 nxj1s1205mc 35 600 nxj1s1212mc 80 2650 nxj1s1215mc 100 4000 typical start-up wave form nxj1 short circuit protection is not continuous and varies with output voltage and temperature as shown in the following graph: 0.1 1 10 100 1000 25 35 45 55 65 75 time (s) ta (c) NXJ1S0303MC nxj1s0305mc nxj1s0505mc nxj1s1205mc nxj1s1212mc nxj1s1215mc
nxj1 series isolated 1w single output sm dc/dc converters kdc_nxj1.a01 page 8 of 10 all enquiries: www.murata-ps.com/support www.murata-ps.com emc filtering and spectra filtering the module includes a basic level of ?ltering. the following plots show typical spectra with en 55022 curve a quasi-peak emc li mit, with the addition of an input capacitor of 2.2f and input inductor of 22h. 0303 0305 0505 1205 1212 1215 0 10 20 30 40 50 60 70 80 1.00e+05 1.00e+06 1.00e+07 1.00e+08 dbuv frequency (hz) 0 10 20 30 40 50 60 70 80 1.00e+05 1.00e+06 1.00e+07 1.00e+08 dbuv frequency (hz) 0 10 20 30 40 50 60 70 80 1.00e+05 1.00e+06 1.00e+07 1.00e+08 dbuv frequency (hz) 0 10 20 30 40 50 60 70 80 1.00e+05 1.00e+06 1.00e+07 1.00e+08 dbuv frequency (hz) 0 10 20 30 40 50 60 70 80 1.00e+05 1.00e+06 1.00e+07 1.00e+08 dbuv frequency (hz) 0 10 20 30 40 50 60 70 80 1.00e+05 1.00e+06 1.00e+07 1.00e+08 dbuv frequency (hz)
nxj1 series isolated 1w single output sm dc/dc converters kdc_nxj1.a01 page 9 of 10 all enquiries: www.murata-ps.com/support www.murata-ps.com package specifications mechanical dimensions pin connections pin function 1 -vin 3 +vin 7 -vout 8 +vout 14 nc nc - no connection. recommended footprint details all dimensions in mm(inches), controlling dimension is mm. tolerances (unless otherwise stated) 0.25 (0.010). weight: 1.12g 2.54 [0.100] 7.62 [0.300] 3.05 [0.120] (8.13 [0.320]) 13.72 [0.540] sma pickup point 1.52 [0.060] 1 14 sma pickup point (top of pcb) 3.110.19 [0.1220.007] # 10.46 [0.412] 37 8 0.1 (0.004) s seating plane s x5 pins x 5 places 0.61 [0.024] 2.54 [0.100] 7.62 [0.300] x5 places 2.30 [0.091] x5 places 1.00 [0.039] 9.40 [0.370] recommended isolation barrier dimension information variant dim # NXJ1S0303MC 4.360.35mm [0.1720.014] nxj1s0305mc nxj1s0505mc 4.160.35mm [0.1640.014] nxj1s1205mc nxj1s1212mc nxj1s1215mc all dimensions in mm(inches), controlling dimension is mm. tolerances (unless otherwise stated) 0.25(0.010).
nxj1 series isolated 1w single output sm dc/dc converters kdc_nxj1.a01 page 10 of 10 all enquiries: www.murata-ps.com/support www.murata-ps.com/support murata power solutions, inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. the descriptions contained her ein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. speci?cations are subject to chan ge without notice. ? 2015 murata power solutions, inc. murata power solutions, inc. 11 cabot boulevard, mans?eld, ma 02048-1151 u.s.a. iso 9001 and 14001 registered this product is subject to the following operating requirements and the life and safety critical application sales policy : refer to: http://www.murata-ps.com/requirements/ tape & reel specifications reel outline dimensions reel packaging details tape outline dimensions 14.3 [0.563]# 0.6 [0.024] max 5.0 [0.197] 11.0 [0.433]# direction of unreeling 1.75 [0.069] 11.5 [0.453] 24.3 [0.957] max 4.0 [0.157] 2.0 [0.079] ?1.5 +0.10 -0.00 [ ?0.059 +0.004 -0.000 16.0 [0.630] ?1.5 [?0.059] min 22.25 [0.876] min cover tape 3 max [ ?20.2 [?0.795] min ?332 [13.071] max or ?180 [7.087] max 1.5 [0.059] min ## 30.4 [1.197] max# ?13.0 +0.5 -0.2 [ ?0.512 +0.020 -0.008 ] tape & reel speci?cations shall conform with current eia-481 standard unless otherwise stated all dimensions in mm(inches) controlling dimension is mm # measured at hub ## six equi-spaced slots on 180mm/7 reel tape & reel speci?cations shall conform with current eia-481 standard unless otherwise stated all dimensions in mm(inches) 0.1mm (0.004 inches) controlling dimension is mm components shall be orientated within the carrier tape as indicated # measured on a plane 0.3mm above the bottom pocket carrier tape pockets shown are illustrative only - refer to carrier tape diagram for actual pocket details. reel quantity: 7 - 180 or 13 - 800 100 [3.937] min leader section 400 [15.748] min goods enclosure section trailer section 160 [6.299] min
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