LF300RU Series Very Wide Input, 3W SMT Single & Dual Output DC/DC Converters Electrical Specifications Specifications typical @ +25°C, nominal input voltage & rated output current, unless otherwise noted. Specifications subject to change without notice. Input Key Features: Parameter • 3W Output Power Input Start Voltage • Wide 4:1 Inputs • Tight Line/Load Regulation Reverse Polarity Input Current Short Circuit Input Power Input Filter • 1,500 VDC Isolation Output • -40ºC to +71ºC Operation Parameter Output Voltage Accuracy Output Voltage Balance 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 • Miniature SMT Case • 14 Standard Models • 1.0 MH MTBF Minimum • Industry Standard Pin-Out RoHS Compliant Conditions 24 VDC Input 48 VDC Input Max. 8.5 17.0 1.0 2,000 π (Pi) Filter (Meets EN55022 Class A) Conditions Min. 4.5 8.5 Min. Typ. 6.0 12.0 Typ. ±0.5 ±0.5 ±0.2 ±0.3 50 Max. ±1.0 ±2.0 ±1.0 ±1.0 75 100 15 150 ±2 ±0.01 Continuous (Autorecovery) 500 ±6 ±0.02 Dual Output, Balanced Load For Vin = Min to Max Iout = 10% to 100% 120 25% Load Step Change Units VDC A mW Units % % % % mV P - P mV P - P mV rms % µS % %/ºC General Parameter Isolation Voltage Isolation Resistance Isolation Capacitance Switching Frequency Conditions 60 Seconds 1,000 VDC 100 kHz, 1V Min. 1,500 1,000 Typ. Max. 350 300 500 Units VDC MΩ pF kHz Environmental MicroPower Direct 292 Page Street Suite D Stoughton, MA 02072 USA T: (781) 344-8226 F: (781) 344-8481 E: [email protected] W: www.micropowerdirect.com Parameter Operating Temperature Range Operating Temperature Range Storage Temperature Range Cooling Humidity Conditions Min. Typ. -40 +25 -40 -40 Free Air Convection RH, Non-condensing Ambient Case Max. +71 +90 +125 Units 95 % ºC ºC ºC Physical Case Size Case Material Weight 1.27 x 0.58 x 0.40 Inches (32.3 x 14.8 x 10.2 mm) Non-Conductive Black Plastic (UL94-V0) 0.31 Oz (8.8g) Reliability Specifications Parameter MTBF Conditions MIL HDBK 217F, 25ºC, Gnd Benign Min. 1.0 Typ. Max. Units MHours Min. -0.7 -0.7 Typ. Max. 50.0 100.0 260 2,500 Units Absolute Maximum Ratings Parameter Input Voltage Surge (1 Sec) Lead Temperature Internal Power Dissipation Conditions 24 VDC Input 48 VDC Input 1.5 mm From Case For 10 Sec. All Models VDC ºC mW Caution: Exceeding Absolute Maximum Ratings may damage the module. These are not continuous operating ratings. Model Selection Guide Model Number LF301RU LF302RU LF303RU LF304RU LF305RU LF306RU LF307RU LF311RU LF312RU LF313RU LF314RU LF315RU LF316RU LF317RU Input Voltage (VDC) Current (mA) Nominal Range Full-Load No-Load 24 9.0 - 36.0 138 20 24 9.0 - 36.0 158 20 24 9.0 - 36.0 154 20 24 9.0 - 36.0 154 20 24 9.0 - 36.0 160 20 24 9.0 - 36.0 154 20 24 9.0 - 36.0 154 20 48 18.0 - 75.0 68 10 48 18.0 - 75.0 78 10 48 18.0 - 75.0 75 10 48 18.0 - 75.0 75 10 48 18.0 - 75.0 78 10 48 18.0 - 75.0 75 10 48 18.0 - 75.0 75 10 Voltage (VDC) 3.3 5.0 12.0 15.0 ±5.0 ±12.0 ±15.0 3.3 5.0 12.0 15.0 ±5.0 ±12.0 ±15.0 Notes: 1. When measuring output ripple, it is recommended that an external 0.47 µF 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 µF 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. No-load operation will not damage these units, however, they may not meet specifications. 4. Dual output units may provide a 10V, 24V or 30V 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 start-up. In this case, it is recommended that a low ESR (ESR <1.0Ω at 100 kHz) capacitor be mounted close to the converter. For 24V input units a 4.7 µF is recommended, and for 48V units a 2.2 µF. 6. Maximum capacitive load for single output units is 3,000 µF, for dual output models it is 180 µF for each output. 7. 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. Output Current (mA, Max) 750 600 250 200 ±300 ±125 ±100 750 600 250 200 ±300 ±125 ±100 Reflected Ripple Cur. Current (mA) (mA, Min) 75.0 10 60.0 10 25.0 10 27.0 10 ±30.0 10 ±12.5 10 ±10.0 10 75.0 5 60.0 5 25.0 5 27.0 5 ±30.0 5 ±12.5 5 ±10.0 5 Efficiency (%, Typ) 75 79 81 81 78 81 81 76 80 83 83 80 83 83 Fuse Rating Slow-Blow (mA) 1,000 1,000 1,000 1,000 1,000 1,000 1,000 500 500 500 500 500 500 500 Derating Curve Mechanical Dimensions Remote ON/OFF Parameter Supply On Supply Off Standby Input Current Control Common Condition Units 2.5 to 5.5 or Open Circuit VDC -0.7 to 0.8 VDC 10 mA Referenced to Negative Input (-Vin) Remote ON/OFF Notes: 1. Maximum sink current at the on/off pin (pin 1) during a logic low is 300 µA. 2. Maximum allowable leakage current of a switch connected to the on/off terminal (Pin 1) at logic high (2.5V to 100V) is 200 µA. Board Layout Pin Connections Pin 1 2 3 10 11 12 13 14 15 22 23 24 Single Dual -Vin -Vin -Vin -Vin On/Off On/Off NC Common NC NC NC -Vout +Vout +Vout NC NC -Vout Common NC NC +Vin +Vin +Vin +Vin 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: [email protected]