specifcations subject to change without notice. please check our website for latest information. document 661-1 revised 03/31/11 document 661-1 revised 05/02/11 document 661-1 core material ferrite weight 45 C 52 mg terminations rohs compliant silver-palladium-platinum-glass frit. other terminations available at additional cost. ambient temperature C40c to +85c with i rms current, +85c to +125c with derated current storage temperature component: C40c to +125c. packaging: C40c to +80c winding to winding isolation 100 vrms resistance to soldering heat max three 40 second refows at +260c, parts cooled to room temperature between cycles moisture sensitivity level (msl) 1 (unlimited foor life at <30c / 85% relative humidity) failures in time (fit) / mean time between failures (mtbf) 38 per billion hours / 26,315,789 hours, calculated per telcordia sr-332 packaging 1000/7 reel; 3500/13 reel plastic tape: 12 mm wide, 0.26 mm thick, 8 mm pocket spacing, 1.65 mm pocket depth recommended pick and place nozzle od: 3 mm; id: 1.5 mm pcb washing only pure water or alcohol recommended dimensions are in inches mm coupled inductors C lpd3015 for sepic and other applications at only 1.4 mm high and 3 mm square, the lpd3015 is coilcrafts smallest shielded coupled inductor. it is ideal for use in a variety of circuits including fyback, multi-output buck and sepic. these inductors provide high inductance, high effciency and excellent current handling in a rugged, low cost part. they can also be used as two single inductors connected in series or parallel or as a common mode choke. 0.118 0.003 3,00 0,076 0.118 0.003 3,00 0,076 0.055 0.004 1,4 0,1 dash n umber xxx dot indicates pin 1 14 2 3 0.039 0,99 0.130 3,30 0.094 2,30 0.094 2,30 0.040 1,02 0.040 1,02 0.130 3,30 0.022 0,54 45 typ 1 4 2 3 * height dimension is without optional solder applied. maximum height with solder applied is 0.061 inche s/ 1,56 mm. * 2 1 4 3 l1 l2 l1 l2 + + ? ? d c c t ypical fl ybac k co n ver ter v out v in sw l1 l2 ++ + ?? ? d d c c sw t ypical buc k con ver ter with auxiliary output t ypical sepic schematic v out v out v out au x v in v in l1 l2 q c1 c ++ ?? d
specifcations subject to change without notice. please check our website for latest information. coupled inductors for sepic - lpd3015 series document 661-2 revised 05/02/11 document 661-2 document 661-2 coupling leakage isat (a) 6 irms (a) inductance 2 dcr max 3 srf typ 4 coeffcient l typ 5 10% 20% 30% both one part number 1 20% (h) (ohms) (mhz) typ (h) drop drop drop windings 7 winding 8 lpd3015-391ml_ 0.39 0.071 289 0.94 0.08 3.2 3.3 3.4 1.45 2.05 lpd3015-561ml_ 0.56 0.079 235 0.94 0.08 2.7 2.8 2.8 1.37 1.94 lpd3015-102ml_ 1.0 0.129 160 0.94 0.09 2.0 2.1 2.2 1.08 1.52 lpd3015-152ml_ 1.5 0.204 140 0.94 0.11 1.6 1.7 1.8 0.86 1.20 lpd3015-182ml_ 1.8 0.273 135 0.94 0.13 1.5 1.6 1.6 0.78 1.10 lpd3015-222ml_ 2.2 0.300 110 0.94 0.14 1.5 1.6 1.6 0.75 1.05 lpd3015-332ml_ 3.3 0.337 90 0.94 0.16 1.0 1.1 1.2 0.67 0.94 lpd3015-472ml_ 4.7 0.503 79 0.94 0.18 0.86 0.87 0.88 0.54 0.76 lpd3015-682ml_ 6.8 0.622 58 0.94 0.22 0.77 0.78 0.79 0.49 0.69 lpd3015-103ml_ 10 1.040 48 0.94 0.28 0.58 0.59 0.60 0.38 0.53 lpd3015-153ml_ 15 1.420 35 0.94 0.37 0.49 0.50 0.51 0.32 0.46 lpd3015-183ml_ 18 1.550 33 0.94 0.42 0.46 0.47 0.48 0.31 0.44 lpd3015-223ml_ 22 1.89 30 0.94 0.48 0.42 0.43 0.44 0.28 0.40 lpd3015-333ml_ 33 2.84 23 0.94 0.63 0.34 0.35 0.36 0.23 0.32 lpd3015-473ml_ 47 4.03 17 0.94 0.81 0.28 0.29 0.30 0.19 0.27 lpd3015-683ml_ 68 6.11 14 0.98 1.13 0.24 0.25 0.26 0.16 0.22 lpd3015-104ml_ 100 8.54 11 0.98 1.50 0.20 0.21 0.22 0.13 0.19 lpd3015-124ml_ 120 9.23 9.0 0.98 1.76 0.19 0.20 0.20 0.13 0.18 lpd3015-154ml_ 150 12.40 8.0 0.98 2.22 0.16 0.17 0.18 0.11 0.16 lpd3015-184ml_ 180 15.32 7.5 0.98 2.79 0.15 0.16 0.17 0.10 0.14 lpd3015-224ml_ 220 18.56 6.0 0.98 3.56 0.13 0.14 0.15 0.09 0.13 lpd3015-334ml_ 330 27.70 5.0 0.98 5.18 0.11 0.12 0.12 0.07 0.10 1. please specify termination and packaging codes: lpd3015-334mlc 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 shown for each winding, measured at 100 khz, 0.1 vrms, 0 adc on an agilent/hp 4284a lcr meter or equivalent. when leads are connected in parallel, inductance is the same value. when leads are connected in series, inductance is four times the value. 3. dcr is for each winding. when leads are connected in parallel, dcr is half the value. when leads are connected in series, dcr is twice the value. 4. srf measured using an agilent/hp 4191a or equivalent. when leads are connected in parallel, srf is the same value. 5. leakage inductance is for l1 and is measured with l2 shorted. 6. dc current, at which the inductance drops the specifed amount from its value without current. it is the sum of the current fowing in both windings. 7. equal current when applied to each winding simultaneously that causes a 40c temperature rise from 25c ambient. see temperature rise calculation. 8 maximum current when applied to one winding that causes a 40c temperature rise from 25c ambient. see temperature rise calculation. 9. electrical specifcations at 25c. refer to doc 639 selecting coupled inductors for sepic applications. refer to doc 362 soldering surface mount components before soldering. temperature rise calculation based on specifed irms t emperature r ise = winding po wer loss 135c w winding po wer loss = (+) dcr in w atts (w) ii l1 2 l2 2 equal current in each winding (0.86 a): winding po wer loss = (0.86 + 0.86 ) 0.204 = 0.301 w t emperature r ise = 0.301 w 135c w = 40.6c 22 unequal current (= 1.0 a, = 0.6 a) ii l1 l2 : winding po wer loss = (1.0 + 0.6 ) 0.204 = 0.277 w t emperature r ise = 0.277 w 135c w = 37.5c 22 examples f or lpd3015-152ml: coupled inductor core and winding loss calculator this web-based utility allows you to enter frequency, peak-to-peak (ripple) current, and i rms current to predict temperature rise and overall losses, including core loss. visit www.coilcraft.com/coupledloss.
specifcations subject to change without notice. please check our website for latest information. coupled inductors for sepic - lpd3015 series document 661-3 revised 05/02/11 document 661-3 typical l vs current typical current derating typical l vs frequency 0.01 0.1 11 0 0.1 1 10 100 1000 inductance (h) 0.01 0.1 11 0 current (a) 22 h 33 h 100 h 220 h 330 h 10 h 3.3 h 2.2 h 1.0 h 0.01 0.1 11 0 0.1 1 10 100 1000 inductance (h) 0.01 0.1 11 0 frequency (mhz) 22 h 220 h 33 h 330 h 10 h 100 h 3.3 h 2.2 h 1.0 h -40 -20 02 04 06 08 0 100 140 120 a mbient t emperatur e (c) pe r cent of r ated c urrent 120 110 100 90 80 70 60 50 40 30 20 10 0 i sat i rm s 25 c
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