Document 713-1 Coupled Inductors - LPR4012 For Step-Up, Resonant & Flyback Applications 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. Part number1 Primary (L1) inductance2 Turns DCR max (Ohms) 20% (H) ratio L1 L2 SRF 4 Irms (A)5 typ3Isat (A) (MHz) 10% drop 20% drop 30% drop 20C rise 40C rise LPR4012-202AMR_ LPR4012-202BMR_ LPR4012-202DMR_ LPR4012-202LMR_ LPR4012-103BMR_ 2.0 2.0 2.0 2.0 10.0 1 : 1.5 1:2 1:3 1 : 10 1:2 0.240 0.240 0.240 0.240 0.600 0.325 0.480 1.15 11.62 1.55 61.5 49.4 31.0 7.43 19.5 1.70 1.70 1.70 1.70 0.62 1.73 1.73 1.73 1.73 0.64 1.74 1.74 1.74 1.74 0.65 1.10 1.10 1.10 1.10 0.52 1.45 1.45 1.45 1.45 0.70 LPR4012-103DMR_ LPR4012-223BMR_ LPR4012-223DMR_ 10.0 22.0 22.0 1:3 1:2 1:3 0.600 1.16 1.16 3.71 3.65 7.08 12.8 11.2 8.00 0.62 0.43 0.43 0.64 0.45 0.45 0.65 0.46 0.46 0.52 0.43 0.43 0.70 0.57 0.57 1. When ordering, please specify termination and packaging codes: LPR4012-223XMRC Termination: R = RoHS compliant matte tin over nickel over silver. Special order: Q = RoHS tin-silver-copper (95.5/4/0.5) or P = 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 at 25C applied to L1 that causes the specified inductance drop from its value without current. 5. Current applied to L1 that causes the specified temperature rise from 25C ambient. This information is for reference only and does not represent absolute maximum ratings. Refer to Doc 362 "Soldering Surface Mount Components" before soldering. US +1-847-639-6400 sales@coilcraft.com UK +44-1236-730595 sales@coilcraft-europe.com Taiwan +886-2-2264 3646 sales@coilcraft.com.tw China +86-21-6218 8074 sales@coilcraft.com.cn Singapore + 65-6484 8412 sales@coilcraft.com.sg Document 713-1 Revised 08/25/16 (c) Coilcraft Inc. 2016 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 Coupled Inductors - LPR4012 Series D L2 + VOUT C AUX - + + L1 SW VIN VOUT C D - - Typical Buck Converter with auxiliary output + + D L1 VIN C L2 VOUT C - PWM Core material Ferrite Weight 54 - 64 mg Terminations RoHS compliant matte tin over nickel over silver. Other terminations available at additional cost. Ambient temperature -40C to +85C with Irms current Maximum part temperature +125C (ambient + temp rise) Storage temperature Component: -40C to +125C. Tape and reel packaging: -40C to +80C Winding to winding isolation 100 V Resistance to soldering heat Max three 40 second reflows at +260C, parts cooled to room temperature between cycles Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30C / 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 Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. See Doc787_PCB_Washing.pdf. - Typical Flyback Converter Dot indicates pin 1 1 2 4 XXXX 1 0.155 0.003 * 3,94 0,076 4 L1 L2 3 2 3 Dash number 0.0433 0.004* 1,10 0,10 0.155 0.003* 3,94 0,076 Recommended Land Pattern 1 4 0.031 0,78 0.103 0.049 2,606 1,24 are of the case not including * Dimensions the termination. For maximum overall dimensions including the termination, add 0.005 in / 0,13 mm. For optional tin-lead and tin-silver-copper terminations, dimensions are for the mounted part. Dimensions before mounting can be an additional 0.005 inch / 0,13 mm). 0.174 4,40 3 2 0.060 1,52 45 typ 0.049 1,24 0.103 2,606 0.174 4,40 Dimensions are in inches mm US +1-847-639-6400 sales@coilcraft.com UK +44-1236-730595 sales@coilcraft-europe.com Taiwan +886-2-2264 3646 sales@coilcraft.com.tw China +86-21-6218 8074 sales@coilcraft.com.cn Singapore + 65-6484 8412 sales@coilcraft.com.sg Document 713-2 Revised 08/25/16 (c) Coilcraft Inc. 2016 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. Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Coilcraft: LPR4012-223BMLB LPR4012-202BMLB LPR4012-202BMLC LPR4012-103DMLB LPR4012-202DMLC LPR4012103BMLC LPR4012-103BMLB LPR4012-202AMLC LPR4012-202LMLC LPR4012-223DMLC LPR4012-223BMLC LPR4012-202DMLB LPR4012-202LMLB LPR4012-202AMLB LPR4012-103DMLC LPR4012-223DMLB