KMP_7625XEN MURATA | Alldatasheet
Document overview
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Technical content
KMP_7625XENC_B03 Page 1 of 4 Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232www.murata-ps.com 76250ENC, 76253/XXENC EN Approved MAX250/251/253 Compatible Converter Transformers For full details go to www.murata-ps.com/rohs
FEATURES
/square6 RoHS compliant /square6 Maxim MAX250/MAX251/MAX253 compatible /square6 BS EN 60950 approved /square6 Isolation to 6kVDC /square6 Toroidal construction /square6 Industry-standard pinout /square6 UL 94 V-0 package materials /square6 Fully encapsulated /square6 Compatible with RoHS soldering systems /square6 Backward compatible with Sn/Pb soldering systems
DESCRIPTION
The 76250ENC converter transformer is specifically designed for use with Maxim chipsets to provide isolated RS232 interfaces. A carefully controlled turns ratio ensures consistent performance whilst a toroidal construction minimises EMI. The 76253/XXENC converter transformers are specifically designed for use with the MAX253 chip set to provide isolated power supplies. The 5V version can supply 1W and the 3.3V version can supply 500mW. A centre tapped secondary winding allows for full bridge, half bridge or voltage doubling. The devices are fully approved to BS EN 60950 for use in telecoms applications. SELECTION GUIDE Order Code Input Voltage Output Voltage Max. Output Current Isolation Voltage Turns RatioV V mA V DC 76250ENC - - - 6000 1CT:1 76253/35ENC 3.3 5.0 100 6000 1:√5 76253/55ENC 5.0 5.0 200 6000 1:1.33 76250ENC CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Primary Inductance, LP (1&5) 10kHz, 100mV 1.0 2.0 2.5 mH Leakage Inductance, LL (1&5)2 100kHz, 100mV 35 40 μH Interwinding Capacitance, CWW (1&2) 100kHz, 100mV 1.5 3.0 pF Volt-time Product, ET (1&5) 50 Vμs 76253/35ENC CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Primary Inductance, LP (1&5) 100kHz, 250mV 140 200 μH Secondary Inductance, LS (2&6) 100kHz, 250mV 700 1000 μH Leakage Inductance, LL (1&5)2 100kHz, 250mV 5.0 7.0 μH Interwinding Capacitance, CWW (1&2) 100kHz, 250mV 2.7 3.5 pF Volt-time Product, ET (1&5) 25 35 Vμs 76253/55ENC CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Primary Inductance, LP (1&5) 100kHz, 250mV 80 150 μH Secondary Inductance, LS (2&6) 100kHz, 250mV 142 267 μH Leakage Inductance, LL (1&5)2 100kHz, 250mV 7.0 10.0 μH Interwinding Capacitance, CWW (1&2) 100kHz, 250mV 2.7 3.5 pF Volt-time Product, ET (1&5) 30 40 Vμs ABSOLUTE MAXIMUM RATINGS Operating free air temperature range 76250EN 0°C to 70°C Operating free air temperature range 76253/XXEN -40°C to 85°C Storage temperature range -50°C to 125°C Lead temperature 1.5mm from case for 10 seconds 300°C Peak current, IPK 76250EN 300mA Peak current, IPK 76253/XXEN 400mA Isolation voltage (flash tested for 1 second) 6000VDC SOLDERING INFORMATION3 Peak wave solder temperature 300˚C for 10 seconds Pin finish Matte tin All specifications typical at TA=25°C 1 Refer to mechanical dimensions for pin locations shown in brackets. 2 With pins 2 & 6 short circuited. 3 For further information, please visit www.murata-ps.com/rohs
KMP_7625XENC_B03 Page 2 of 4 Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232www.murata-ps.com 76250ENC, 76253/XXENC EN Approved MAX250/251/253 Compatible Converter Transformers TYPICAL CHARACTERISTICS (VOLTAGE CURVES) VOLTAGE CURVES Output Voltage (V) Output Voltage (V) Output Current (mA) Output Current (mA) EFFICIENCY CURVES Efficiency (%) Efficiency (%) Output Current (mA) Output Current (mA) VOLTAGE DEVIATION Voltage deviation from nominal 25ºC output (%) Voltage deviation from nominal 25ºC output (%) Temperature (ºC) Temperature (ºC) All curves are derived from testing with the Maxim MAX235 IC using the circuit shown in application note MPAN-03 (download at http://www.murata-ps.com/data/apnotes/mpan-03.pdf). 0 20 40 60 80 100 0 100 200 300 400 76253/35ENC 76253/55ENC 0 20 40 60 80 100 100 0 100 200 300 400 100 76253/35ENC 76253/55ENC -50 -25 0 25 50 75 100 110 105 100 -50 -25 0 25 50 75 100 76253/35ENC 76253/55ENC 110 105 100
KMP_7625XENC_B03 Page 3 of 4 Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232www.murata-ps.com 76250ENC, 76253/XXENC EN Approved MAX250/251/253 Compatible Converter Transformers PACKAGE SPECIFICATIONS MECHANICAL DIMENSIONS TUBE DIMENSIONS RECOMMENDED FOOTPRINT DETAILS * 76250EN Pin not fitted. Unless otherwise stated all dimensions in mm (inches) ±0.25mm (±0.01). Tube length: 480±2.00mm (18.90±0.079"). Tube quantity: 30 Tube material: Antistatic coated clear pvc. Holes may be omitted for variants with fewer than 6 pins. Unless otherwise stated all dimensions in mm (inches) ±0.25 (0.01). 2.54 (0.100) 2.54 (0.100) x6 HOLES* Primary 4.10 (0.161) 12.50 (0.492) 12.00 (0.472) 2.54 (0.1) 7.50 (0.295) 15.00 (0.59) 15.00 (0.59) 76250ENC XYYWW Ø0.56±0.05 (Ø0.022±0.002) Primary Secondary Secondary 1 Pin Connections 76250EN (Top View) Pin Connections 76253/XXEN (Top View)
KMP_7625XENC_B03 Page 4 of 4 Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232www.murata-ps.com 76250ENC, 76253/XXENC EN Approved MAX250/251/253 Compatible Converter Transformers 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. © 2008 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 REGISTERED 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. All products in this series are 100% production tested at their stated isolation voltage. This series is recognised by the British Standards Institution to a working voltage of 300Vrms for Reinforced Insulation systems. 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 materi- als, construction and environment. We therefore strongly advise against repeated high voltage isolation testing, but if it is absolutely required, that the voltage be reduced by 20% from the specified test voltage.