kdc_lmec_e03 page 1 of 5 technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232 www.murata-ps.com lme series isolated 250mw single output dc/dc converters www.murata-ps. com for full details go to www.murata-ps.com/rohs $ selection guide order code nominal input voltage output voltage output current ef?ciency isolation capacitance mttf 1 package style v v ma % pf khrs lme0505dc 5 5 50 70 29 2279 dip lme0509dc 5 9 28 75 37 1139 lme0512dc 5 12 21 75 41 624 lme0515dc 5 15 16 75 40 357 lme0505sc 5 5 50 70 29 2279 sip lme0509sc 5 9 28 75 37 1139 lme0512sc 5 12 21 75 41 624 lme0515sc 5 15 16 75 40 357 lme1205dc 12 5 50 70 38 536 dip lme1209dc 12 9 28 75 40 434 lme1212dc 12 12 21 75 43 330 LME1215DC 12 15 16 75 45 237 lme1205sc 12 5 50 70 38 536 sip lme1209sc 12 9 28 75 40 434 lme1212sc 12 12 21 75 43 330 lme1215sc 12 15 16 75 45 237 when operated with additional external load capacitance the rise time of the input voltage will determine the maximum external ca- pacitance value for guaranteed start up. the slower the rise time of the input voltage the greater the maximum value of the add itional external capacitance for reliable start up. 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 13.2 output characteristics parameter conditions min. typ. max. units rated power 2 t a =0c to 70c 0.25 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 15 % 10% load to rated load, all other types 10 ripple and noise bw=dc to 20mhz, all output types 100 mv p-p isolation characteristics parameter conditions min. typ. max. units isolation test voltage flash tested for 1 second 1000 vdc resistance viso= 500vdc 1 g general characteristics parameter conditions min. typ. max. units switching frequency all input types 100 khz absolute maximum ratings short-circuit protection 3 1 second lead temperature 1.5mm from case for 10 seconds 300c input voltage v in , lme05 types 7v input voltage v in , lme12 types 15v 1. calculated using mil-hdbk-217f with nominal input voltage at full load. 2. see derating curve. 3. supply voltage must be disconnected at the end of the short circuit duration. all speci?cations typical at t a =25c, nominal input voltage and rated output current unless otherwise speci?ed. features rohs compliant single output rail 1kvdc isolation high ef?ciency for low power applications sip & dip package styles power density 0.36w/cm 3 ul 94v-0 package material footprint from 0.69cm 2 5v & 12v input 5v, 9v, 12v & 15v output no heatsink required internal smd construction fully encapsulated with toroidal magnetics no external components required mttf up to 2.2 million hours custom solutions available pin compatible with nke, nme & nml series pcb mounting description the lme series of dc/dc converters are optimised for low-power operation. they are ideally suited to generating a negative supply where only a posi- tive rail exists.
kdc_lmec_e03 page 2 of 5 technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232 www.murata-ps.com lme series isolated 250mw single output dc/dc converters temperature characteristics parameter conditions min. typ. max. units speci?cation all output types 0 70 c storage -55 130 cooling free air convection temperature derating graph 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 isola tion. murata power solutions lme 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 lme series, both input and output should normally be maintained wit hin 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 lme 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. 150 100 50 0 0 0.125 0.250 0.375 safe operating area ambient temperature (c) output power (w) 70c 125c rohs compliant 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 matte 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
kdc_lmec_e03 page 3 of 5 technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232 www.murata-ps.com lme series isolated 250mw single output dc/dc converters 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 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 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 lme0505sc 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 lme0505dc 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
kdc_lmec_e03 page 4 of 5 technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232 www.murata-ps.com lme series isolated 250mw single output dc/dc converters 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. ? 2009 murata power solutions, inc. usa: mans?eld (ma), tel: (508) 339 3000, email: sales@murata-ps.com canada: toronto, tel: (866) 740 1232, email: toronto@murata-ps.com uk: milton keynes, tel: +44 (0)1908 615232, email: mk@murata-ps.com france: montigny le bretonneux, tel: +33 (0)1 34 60 01 01, email: france@murata-ps.com germany: mnchen, tel: +49 (0)89-544334-0, email: ped.munich@murata-ps.com japan: tokyo, tel: 3-3779-1031, email: sales_tokyo@murata-ps.com osaka, tel: 6-6354-2025, email: sales_osaka@murata-ps.com china: shanghai, tel: +86 215 027 3678, email: shanghai@murata-ps.com guangzhou, tel: +86 208 221 8066, email: guangzhou@murata-ps.com singapore: parkway centre, tel: +65 6348 9096, email: singapore@murata-ps.com murata power solutions, inc. 11 cabot boulevard, mans?eld, ma 02048-1151 u.s.a. tel: (508) 339-3000 (800) 233-2765 fax: (508) 339-6356 www.murata-ps.com email: sales@murata-ps.com iso 9001 & iso 14001 registered package specifications (continued) recommended footprint details tube outline dimensions 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).
unless otherwise stated all dimensions in inches (mm 0.5mm).
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