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+1-847-639-6400 sales@coilcraft.com +44-1236-730595 sales@coilcraft-europe.com +886-2-2264 3646 sales@coilcraft.com.tw +86-21-6218 8074 sales@coilcraft.com.cn + 65-6484 8412 sales@coilcraft.com.sg © Coilcraft Inc. 2013 This product may not be used in medical or high risk applications without prior Coilcraft approval. Specification subject to change without notice. Please check web site for latest information. Document 713-1 The LPR4012 miniature shielded coupled inductors are only 1,1 mm high and 4 mm square. The excellent coupling coefficient (k = 0.95) makes them ideal for use as flyback transformers in DC-DC converters or as coupled inductors in buck regulators to provide multiple outputs. The wide selection of turns ratios makes them suitable for a variety of voltage step-up and step-down applications. They can also be used in autotransformer applications. The high Isat and low DCR ratings of these low profile parts provide high efficiency and excellent current handling in a rugged, low cost design. Custom inductance values and turn ratios are available upon request. Document 713-1 Revised 01/29/10 Primary (L1) SRF inductance2 Turns DCR max (Ohms) typ3 Isat (A)4 Irms (A)5 Part number1 ± 20% (µH) ratio L1 L2 (MHz) 10% drop 20% drop 30% drop 20°C rise 40°C rise 1. When ordering, please specify termination and packaging codes: LPR4012-223XMLC Termination: L = RoHS compliant Silver-palladium-platinum-glass frit. Special order: T = RoHS tin-silver-copper (95.5/4/0.5) or S = non-RoHS tin-lead (63/37). Packaging: C = 7″ machine-ready reel. EIA-481 embossed plastic tape (1000 parts per full reel). B = Less than full reel. In tape, but not machine ready. To have a leader and trailer added ($25 charge), use code letter D instead. D = 13″ machine-ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked (3500 parts per full reel). 2. Inductance is measured at 100 kHz, 0.1 Vrms, 0 Adc on an Agilent/HP 4284A LCR meter or equivalent. 3. SRF measured using an Agilent/HP 4191A or equivalent. When leads are connected in parallel, SRF is the same value. 4. DC current applied to L1, at which the inductance drops the specified amount from its value without current. 5. Current applied to L1 that causes the specified temperature rise from 25°C ambient. Refer to Doc 362 “Soldering Surface Mount Components” before soldering. Coupled Inductors – LPR4012 For Step-Up, Resonant & Flyback Applications
Coupled Inductors – LPR4012 Series US UK Taiwan China Singapore +1-847-639-6400 sales@coilcraft.com +44-1236-730595 sales@coilcraft-europe.com +886-2-2264 3646 sales@coilcraft.com.tw +86-21-6218 8074 sales@coilcraft.com.cn + 65-6484 8412 sales@coilcraft.com.sg © Coilcraft Inc. 2013 This product may not be used in medical or high risk applications without prior Coilcraft approval. Specification subject to change without notice. Please check web site for latest information. Document 713-2 0.060 1,52 0.0433 ±0.004 1,10 ±0,10 Dash number Dot indicates pin 1 0.155 ±0.003 3,94 ±0,076 0.155 ±0.003 3,94 ±0,076 XXXX Recommended Land Pattern 0.174 4,40 0.103 2,606 0.103 2,606 0.049 1,24 0.049 1,24 0.174 4,40 0.031 0,78 45° typ 1 4 2 3 1 4 L1 L2 Core material Ferrite Weight 54 – 64 mg Terminations RoHS compliant silver-palladium-platinum-glass frit. Other terminations available at additional cost. Ambient temperature –40°C to +85°C with Irms current, +85°C to +125°C with derated current Storage temperature Component: –40°C to +125°C. Tape and reel packaging: –40°C to +80°C Winding to winding isolation 100 V Resistance to soldering heat Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C / 85% relative humidity) Mean Time Between Failures (MTBF) 26,315,789 hours Failures in Time (FIT) 38 per one billion hours Packaging 1000/7″ reel; 3500/13″ reel Plastic tape: 12 mm wide, 0.25 mm thick, 8 mm pocket spacing, 1.32 mm pocket depth Recommended pick and place nozzle OD: 4 mm; ID: ≤ 2 mm PCB washing Only pure water or alcohol recommended Dimensions are in inches mm -40 -20 02 04 06 08 0 100 140120 Ambient temperature (°C) Pe rcent of rated c urrent 120 110 100 Isat Irms 25° C Current Derating D D D C C PWM C C SW Typical Flyback Converter Typical Buck Converter with auxiliary output VOUT VOUT VOUTAUX VIN VIN Document 713-2 Revised 01/29/10