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LF121DI Fiches technique(PDF) 2 Page - MicroPower Direct, LLC |
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LF121DI Fiches technique(HTML) 2 Page - MicroPower Direct, LLC |
2 / 2 page Model Selection Guide Mechanical Dimensions Notes: 1. Load regulation is measured for an output change of 20% to 100%. 2. When measuring output ripple, it is recommended that an external 0.33 µF ceramic capacitor be placed from the +Vout pin to the -Vout pin. For noise sensitive applications, the use of 0.47 µF capacitors will reduce the output ripple. 3. Operation at no-load will not damage these units. However, they may not meet all specifications. 4. 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 5V input units a 2.2 µF is recommended, for 12V input units, a 1.0 µF, and for 24V input units, a 0.47 µF. 5. Dual output units may be connected to provide a 10 VDC, 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. 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. Model Number Input Output Load Regulation (%, Max) Efficiency (%, Typ) Fuse Rating Slow-Blow (mA) Voltage (VDC) Current (mA) Voltage (VDC) Current (mA, Max) Current (mA, Min) Nominal Range Full-Load No-Load LF101DI 5 4.5 - 5.5 277 30 ±5.0 ±100.0 ±2.0 10 72 500 LF102DI 5 4.5 - 5.5 255 30 ±12.0 ±42.0 ±0.8 7 78 500 LF103DI 5 4.5 - 5.5 258 30 ±15.0 ±34.0 ±0.7 7 79 500 LF111DI 12 10.8 - 13.2 112 12 ±5.0 ±100.0 ±2.0 8 74 200 LF112DI 12 10.8 - 13.2 105 12 ±12.0 ±42.0 ±0.8 5 80 200 LF113DI 12 10.8 - 13.2 104 12 ±15.0 ±34.0 ±0.7 5 81 200 LF121DI 24 21.6 - 26.4 57 7 ±5.0 ±100.0 ±2.0 8 72 100 LF122DI 24 21.6 - 26.4 53 7 ±12.0 ±42.0 ±0.8 5 79 100 LF123DI 24 21.6 - 26.4 53 7 ±15.0 ±34.0 ±0.7 5 80 100 Pin Description Pin Description 1-Vin 7 NA 2 +Vin 8 +Vout 3NA 10 NA 5 Common 11 NA 6 -Vout 12 NA NA = Not available for connection Pin Connections ±5V Out µF Max ±12 & ±15V Out µF Max 10 2.2 Capacitive Load Board Layout Derating Curve 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 Notes: • All dimensions are typical in inches (mm) • Tolerance: Inches x.xx = ±0.01 Millimeters x.x = ±0.25 x.xx = ±0.13 Pin: ±0.002 (±0.05) • Pin 1 is marked by a “dot” or indentation on the unit. The curved edge of the case indicates the Pin 1 side. |
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