LME0505DC MURATA | Alldatasheet
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KDC_LMEC_E03 Page 1 of 5 Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232www.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 Ḥ SELECTION GUIDE Order Code Nominal Input Voltage Output Voltage Output Current Efficiency Isolation Capacitance MTTF1 Package Style V V mA % pF kHrs LME0505DC 5 5 50 70 29 2279 DIPLME0509DC 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 SIPLME0509SC 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 DIPLME1209DC 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 SIPLME1209SC 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 additional external capacitance for reliable start up. INPUT CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units OUTPUT CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Rated Power2 TA=0°C to 70°C 0.25 W Voltage Set Point Accuracy See tolerance envelope Line regulation High V IN to low VIN 1.0 1.2 %/% Load Regulation2 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 GΩ GENERAL CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Switching frequency All input types 100 kHz ABSOLUTE MAXIMUM RATINGS Short-circuit protection3 1 second Lead temperature 1.5mm from case for 10 seconds 300°C Input voltage VIN, LME05 types 7V Input voltage VIN, 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 specifications typical at T A=25°C, nominal input voltage and rated output current unless otherwise specified.
FEATURES
/square6 RoHS compliant /square6 Single output rail /square6 1kVDC isolation /square6 High efficiency for low power applications /square6 SIP & DIP package styles /square6 Power density 0.36W/cm3 /square6 UL 94V-0 package material /square6 Footprint from 0.69cm2 /square6 5V & 12V input /square6 5V, 9V, 12V & 15V output /square6 No heatsink required /square6 Internal SMD construction /square6 Fully encapsulated with toroidal magnetics /square6 No external components required /square6 MTTF up to 2.2 million hours /square6 Custom solutions available /square6 Pin compatible with NKE, NME & NML series /square6 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 615232www.murata-ps.com LME Series Isolated 250mW Single Output DC/DC Converters TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Specification All output types 0 70 °CStorage -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 VNOM 100755025 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 specified time, across a component designed to provide electrical isolation, to verify the integrity of that isolation. 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 specific agency approvals, such as the LME series, both input and output should normally be maintained within 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 an 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; but 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 circuits 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 insulation. 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 be reduced by 20% from specified 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. 150100500 0.125 0.250 0.375 Safe Operating Area Ambient Temperature (°C) Output Power (W) 70°C 125°C RoHS COMPLIANT INFORMATION This series is compatible with RoHS soldering systems with a peak wave solder temperature of 300°C for 10 seconds. The pin termination finish 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 615232www.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 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 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) 1234
KDC_LMEC_E03 Page 4 of 5 Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232www.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 herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. © 2009 Murata Power Solutions, Inc. USA: Mansfield (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: München, 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, Mansfield, 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).