technical enquiries email: mk@murata-ps.com, tel: +44 (0)1908 615232 nme 5v & 12v series isolated 1w single output dc/dc converters 2010-07-08 kdc_nme.f01 page 1 of 6 www.murata-ps.com for full details go to www.murata-ps.com/rohs $ www.murata-ps.com selection guide order code nominal input voltage output voltage output current input current at rated load ef? ciency isolation capacitance mttf 1 package style v v ma ma % pf khrs nme0505dc 5 5 200 289 69 30 3415 dip nme0509dc 5 9 111 260 77 37 3078 nme0512dc 5 12 83 256 78 33 2205 nme0515dc 5 15 66 250 80 40 1532 nme0524dc 5 24 42 248 80 48 nme0505sc 5 5 200 289 69 30 3415 sip nme0509sc 5 9 111 260 77 37 3078 nme0512sc 5 12 83 256 78 33 2205 nme0515sc 5 15 66 250 80 40 1532 nme0524sc 5 24 42 248 80 48 nme1205dc 12 5 200 120 69 33 2493 dip nme1209dc 12 9 111 115 74 48 2311 nme1212dc 12 12 83 105 76 55 1780 NME1215DC 12 15 66 110 75 52 1313 nme1205sc 12 5 200 120 69 33 2493 sip nme1209sc 12 9 111 115 74 48 2311 nme1212sc 12 12 83 110 76 55 1780 nme1215sc 12 15 66 111 75 52 1313 input characteristics parameter conditions min. typ. max. units voltage range continuous operation, 5v input types 4.5 5.0 5.5 v continuous operation, 12v input types 10.8 12.0 13.2 re? ected ripple current 26 48 ma p-p output characteristics parameter conditions min. typ. max. units rated power 2 t a =-40c to 120c 1.0 w voltage set point accuracy see tolerance envelope line regulation high v in to low v in 1.0 1.2 %/% load regulation 2 10% load to rated load, 5v output types 14 15 % 10% load to rated load, 9v output types 9 10 10% load to rated load, 12v output types 7.5 9.5 10% load to rated load, 15v output types 7.0 8.5 10% load to rated load, 24v output types 5.5 7.5 ripple and noise bw=dc to 20mhz, 5v output types 85 110 mv p-p bw=dc to 20mhz, 9v output types 60 75 bw=dc to 20mhz, 12v output types 50 65 bw=dc to 20mhz, 15v output types 40 55 bw=dc to 20mhz, 24v output types 140 180 absolute maximum ratings lead temperature 1.5mm from case for 10 seconds 300c internal power dissipation 450mw input voltage v in , nme05 types 7v input voltage v in , nme12 types 15v 1. calculated using mil-hdbk-217f fn2 with nominal input voltage at full load. 2. see derating curve. all speci? cations typical at t a =25c, nominal input voltage and rated output current unless otherwise speci? ed. features rohs compliant single isolated output 1kvdc isolation ef? ciency up to 80% wide temperature performance at full 1 watt load, C40c to 85c power density 1.53w/cm 3 ul 94v-0 package material footprint from 0.69cm 2 industry standard pinout 5v & 12v input 5v, 9v, 12v and 15v output no heatsink required internal smd construction fully encapsulated with toroidal magnetics no external components required mttf up to 3.4 million hours custom solutions available pin compatible with lme & nml series pcb mounting description the nme series of dc/dc converters is particular- ly suited to isolating and/or converting dc power rails. the galvanic isolation allows the device to be con? gured to provide an isolated negative rail in systems where only positive rails exist. the wide temperature range guarantees startup from C40c and full 1 watt output at 85c. for lower ripple, refer to output ripple reduction section.
technical enquiries email: mk@murata-ps.com, tel: +44 (0)1908 615232 nme 5v & 12v series isolated 1w single output dc/dc converters 2010-07-08 kdc_nme.f01 page 2 of 6 www.murata-ps.com general characteristics parameter conditions min. typ. max. units switching frequency 5v input types 110 khz 12v input types 145 isolation characteristics parameter conditions min. typ. max. units isolation test voltage flash tested for 1 second 1000 vdc resistance viso= 1000vdc 10 g temperature characteristics parameter conditions min. typ. max. units speci? cation all output types -40 85 c storage -50 130 case temperature above ambient 5v output types 41 all other output types 32 cooling free air convection temperature derating graph 150 100 50 0 -40 0 0.5 1.0 1.5 safe operating area 85c ambient temperature (c) output power (w) 120c tolerance envelope +10% output load current (%) output voltage +5% -7.5% -2.5% +2.5% typical load line v nom 100 75 50 25 10 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 isol ation. murata power solutions nme series of dc/dc converters are all 100% production tested at their stated isolation voltage. this is 1kvdc for 1 second. 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 nme 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 nme series has toroidal isolation transformers, with no additional insulation between primary and secondary windings of enameled wire. while parts can be expected to withstand several times the stated test voltage, the isolation capability does depend on the wire insu lation. any material, including this enamel (typically polyurethane) is susceptible to eventual chemical degradation when subject to very high applied voltages thus implying that the number of tests should be strictly limited. we therefore strongly advise against repeated high voltage isolation testing, but if it is absolutely required, that the voltage b e reduced by 20% from speci? ed test voltage. this consideration equally applies to agency recognized parts rated for better than functional isolation where the wire enamel insulation is always supplemented by a further insulation system of physical spacing or barriers. 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.
technical enquiries email: mk@murata-ps.com, tel: +44 (0)1908 615232 nme 5v & 12v series isolated 1w single output dc/dc converters 2010-07-08 kdc_nme.f01 page 3 of 6 www.murata-ps.com application notes minimum load 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 and start up typical start up times for this series, with a typical input voltage rise time of 2.2s and output capacitance of 10f, are sho wn in the table below. the product series will start into a capacitance of 47f with an increased start time, however, the maximum recommended output capacitance is 10f. 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 + + - - typical start-up wave form start-up time s nme0505sc 991 nme0509sc 3524 nme0512sc 5630 nme0515sc 7750 nme0524sc 19850 nme1205sc 682 nme1209sc 2102 nme1212sc 4030 nme1215sc 6193
technical enquiries email: mk@murata-ps.com, tel: +44 (0)1908 615232 nme 5v & 12v series isolated 1w single output dc/dc converters 2010-07-08 kdc_nme.f01 page 4 of 6 www.murata-ps.com application notes (continued) 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 reso nant frequency) should be >20mhz. dc dc l c load power source inductor capacitor l, h smd through hole c, f nme0505sc 47 82473c 11r473c 4.7uf nme0509sc 47 82473c 11r473c 1uf nme0512sc 68 82683c 11r683c 1uf nme0515sc 100 82104c 11r104c 0.47uf nme0524xc 100 82104c 11r104c 0.47 nme1205sc 100 82104c 11r104c 4.7uf nme1209sc 47 82473c 11r473c 1uf nme1212sc 68 82683c 11r683c 0.47uf nme1215sc 100 82104c 11r104c 0.47uf
technical enquiries email: mk@murata-ps.com, tel: +44 (0)1908 615232 nme 5v & 12v series isolated 1w single output dc/dc converters 2010-07-08 kdc_nme.f01 page 5 of 6 www.murata-ps.com package specifications mechanical dimensions pin connections - 8 pin dip pin function 1-v in 4+v in 5+v out 7-v out pin connections - 4 pin sip pin function 1-v in 2+v in 3-v out 4+v out 0.45 (11.48) 0.236 (6.00) 0.0118 (0.30) 0.0078 (0.20) 0.074 (1.89) 0.109 (2.77) 0.3 (7.62) 0.049 (1.25) 0.393 (10.0) 0.022 (0.55) 0.018 (0.45) 0.181 (4.60) 0.142 (3.60) 0.022 (0.55) 0.018 (0.45) xyyww nme0505sc 0.267 (6.80) 0.181 (4.60) 0.142 (3.60) 0.022 (0.55) 0.018 (0.45) 0.453 (11.50) 0.386 (9.80) xyyww nme0505dc 0.0118 (0.30) 0.0078 (0.20) 0.043 (1.09) 0.0763 (1.94) 0.3 (7.62) 0.3 (7.62) 0.2 (5.08) 14 5 7 1234 all dimensions in inches 0.01 (mm 0.25mm). all pins on a 0.1 (2.54) pitch and within 0.01 (0.25) of true position. weight: 1.30g (sip) 1.48g (dip) dip package sip package
technical enquiries email: mk@murata-ps.com, tel: +44 (0)1908 615232 nme 5v & 12v series isolated 1w single output dc/dc converters 2010-07-08 kdc_nme.f01 page 6 of 6 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 cha nge without notice. ? 2010 murata power solutions, inc. murata power solutions, inc. 11 cabot boulevard, mans? eld, ma 02048-1151 u.s.a. iso 9001 and 14001 registered www.murata-ps.com/locations package specifications (continued) recommended footprint details tube outline dimensions rohs compliance information this series is compatible with rohs soldering systems with a peak wave solder temperature of 300c for 10 seconds. the pin termination ? nish on the sip package type is tin plate, hot dipped over matte tin with nickel preplate. the dip types are matt e tin over nickel preplate. both types in this series are backward compatible with sn/pb soldering systems. for further information, please visit www.murata-ps.com/rohs 8 pin dip tube 4 pin sip tube 8 pin dip package 4 pin sip package
) 0 - & 4 ?
?
) 0 - & 4 tube quantity : 35 unless otherwise stated all dimensions in inches (mm) 0.5mm. tube length (8 pin dip) : 20.47 (520mm 2mm). tube length (4 pin sip) : 20.47 (520mm 2mm).
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