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| LF300RW Series Wide Input, 3W SMT Single & Dual Output DC/DC Converters Electrical Specifications Specifications typical @ +25C, nominal input voltage & rated output current, unless otherwise noted. Specifications subject to change without notice. Key Features: * 3W Output Power * UL Approved (File E245422) * Wide 2:1 Inputs * Miniature SMT Case * Tight Line/Load Regulation * 1,500 VDC Isolation * -40C to +70C Operation * 21 Standard Models * 1.0 MH MTBF Minimum * Industry Standard Pin-Out Input Parameter Input Start Voltage Reverse Polarity Input Current Short Circuit Input Power Input Filter Conditions 12 VDC Input 24 VDC Input 48 VDC Input Min. 4.5 8.0 16.0 Typ. 6.0 12.0 24.0 Max. 8.0 16.0 32.0 0.5 1,500 Units VDC A mW (Pi) Filter Conditions Dual Output, Balanced Load For Vin = Min to Max Iout = 20% to 100% Min. Typ. 0.5 0.5 0.1 0.3 50 Max. 1.0 1.0 0.3 1.0 75 100 10 500 6.0 0.02 Units % % % % mV P - P mV P - P mV rms % S % %/C Output Parameter Output Voltage Accuracy Output Voltage Accuracy Line Regulation Load Regulation Ripple & Noise (20 MHz) (Note 1) Ripple & Noise (20 MHz) Ripple & Noise (20 MHz) Output Power Protection Transient Response Time (Note 2) Transient Response Deviation Temperature Coefficient Output Short Circuit 120 25% Load Step Change Continuous Conditions 60 Seconds 1,000 VDC 100 kHz, 1V Min. 1,500 1,000 Typ. Max. 250 2.0 0.01 General RoHS Compliant Parameter Isolation Voltage Isolation Resistance Isolation Capacitance Switching Frequency 65 300 100 Units VDC M pF kHz Units Environmental Parameter Operating Temperature Range Operating Temperature Range Storage Temperature Range Cooling Humidity Conditions Min. Typ. -40 +25 -40 +25 -40 Free Air Convection RH, Non-condensing Ambient Case Max. +71 +90 +125 95 C C C % MicroPower Direct 292 Page Street Suite D Stoughton, MA 02072 USA T: (781) 344-8226 F: (781) 344-8481 E: sales@micropowerdirect.com W: www.micropowerdirect.com Physical Case Size Case Material Weight 1.27 x 0.74 x 0.40 Inches (32.3 x 28.8 x 10.2 mm) Non-Conductive Black Plastic (UL94-V0) 0.35 Oz (10g) Conditions Min. Typ. 1.0 MIL HDBK 217F, 25C, Gnd Benign UL 1950, EN 60950, IEC 60950 UL, cUL; File No. E245422 Conditions 12 VDC Input 24 VDC Input 48 VDC Input 1.5 mm From Case For 10 Sec. All Models Min. -0.7 -0.7 -0.7 Typ. Max. Units MHours Reliability Specifications Parameter MTBF Safety Standards Safety Approvals Absolute Maximum Ratings Parameter Input Voltage Surge (1 Sec) Lead Temperature Internal Power Dissipation Max. 25.0 50.0 100.0 260 2500 Units VDC C mW Caution: Exceeding Absolute Maximum Ratings may damage the module. These are not continuous operating ratings. Model Selection Guide Model Number LF301RW LF302RW LF303RW LF304RW LF305RW LF306RW LF307RW LF311RW LF312RW LF313RW LF314RW LF315RW LF316RW LF317RW LF321RW LF322RW LF323RW LF324RW LF325RW LF326RW LF327RW Voltage (VDC) Nominal 12 12 12 12 12 12 12 24 24 24 24 24 24 24 48 48 48 48 48 48 48 Range 9.0 - 18.0 9.0 - 18.0 9.0 - 18.0 9.0 - 18.0 9.0 - 18.0 9.0 - 18.0 9.0 - 18.0 18.0 - 36.0 18.0 - 36.0 18.0 - 36.0 18.0 - 36.0 18.0 - 36.0 18.0 - 36.0 18.0 - 36.0 36.0 - 75.0 36.0 - 75.0 36.0 - 75.0 36.0 - 75.0 36.0 - 75.0 36.0 - 75.0 36.0 - 75.0 Output Fuse Rating Efficiency Reflected Slow-Blow Voltage Current Current (%, Typ) Ripple (mA) (VDC) (mA, Max) (mA, Min) Full-Load No-Load (mA, Typ) 257 20 25 3.3 700.0 70.0 75 750 316 20 25 5.0 600.0 60.0 79 750 305 20 25 12.0 250.0 25.0 82 750 305 20 25 15.0 200.0 20.0 82 750 321 20 25 5.0 300.0 30.0 78 750 309 20 25 12.0 125.0 12.5 81 750 309 20 25 15.0 100.0 10.0 81 750 127 5 15 3.3 700.0 70.0 76 350 156 5 15 5.0 600.0 60.0 80 350 151 5 15 12.0 250.0 25.0 83 350 151 5 15 15.0 200.0 20.0 83 350 158 5 15 5.0 300.0 30.0 79 350 152 5 15 12.0 125.0 12.5 82 350 152 5 15 15.0 100.0 10.0 82 350 63 3 10 3.3 700.0 70.0 76 200 78 3 10 5.0 600.0 60.0 80 200 75 3 10 12.0 250.0 25.0 83 200 75 3 10 15.0 200.0 20.0 83 200 79 3 10 5.0 300.0 30.0 79 200 79 3 10 12.0 125.0 12.5 82 200 76 3 10 15.0 100.0 10.0 82 200 Input Current (mA) Notes: 1. When measuring output ripple, it is recommended that an external 0.47 F ceramic capacitor be placed from the +Vout pin to the -Vout pin for single output units and from each output to common for dual output units. For noise sensitive applications, the use of 3.3 F capacitors will reduce the output ripple. 2. Transient recovery is measured to within a 1% error band for a load step change of 75% to 100%. 3. Operation at no-load will not damage these units. However, they may not meet all specifications. 4. Dual output units may be connected to provide a 24 VDC or 30 VDC output. To do this, connect the load across the positive (+Vout) and negative (-Vout) outputs and float the output common. 5. The converter should be connected to a low ac-impedance source. An input source with a highly inductive impedance may affect the stability of the converter. In applications where the converter output loading is high and input power is supplied over long lines, it may be necessary to use a capacitor on the input to insure startup. In this case, it is recommended that a low ESR (ESR <1.0 at 100 kHz) capacitor be mounted close to the converter. For 12V input units a 3.3 F is recommended, and for 24V & 48V units a 1.5 F. 6. It is recommended that a fuse be used on the input of a power supply for protection. See the table above for the correct rating. Derating Curve Capacitive Load Single Output F Max 4,700 Dual Output F Max 180 Pin Connections Pin 1 2 3 10 11 12 13 14 15 22 23 24 Single -Vin -Vin NC NC NC NC +Vout NC -Vout NC +Vin +Vin Dual -Vin -Vin NC Common NC -Vout +Vout NC Common NC +Vin +Vin Mechanical Dimensions Board Layout NC: No Connection Notes: * All dimensions are typical in inches (mm) * Tolerance x.xx = 0.01 (0.25) * Pin 1 is marked by a "dot" or indentation on the unit MicroPower Direct www.micropowerdirect.com 292 Page Street Ste D Stoughton, MA 02072 * TEL: (781) 344-8226 * FAX: (781) 344-8481 * E-Mail: sales@micropowerdirect.com |
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