ld series metalized drum core po wer inductor description ?metalized drum core design utilizes board space ?current range from 4.46 to 0.52 amps ?inductance range from 1.0 uh to 470uh ?rohs compliant (-r option) applications ?buck or boost inductor ?noise filtering and output filter chokes ?computers ?power supplies ?test equipment instrumentation environmental data ?storage temperature: -25? to +85? ?operating ambient temperature: -20? to +80? (range is application specific). temperature rise is approximately 40? at rated rms current. ?ir reflow temperature: 240? for 30 seconds max. pa ck a ging ?supplied in tape and reel packaging, ld1 (2,000), ld2 (1,000) parts per reel pa rt rated ocl (1) irms (2) isat (3) dcr (4) number inductance nominal amperes amperes ( ? ) (h) (max.) ld1-1r0 1.0 1.00 2.66 4.46 0.0330 ld1-1r4 1.4 1.40 2.47 3.41 0.0380 ld1-1r8 1.8 1.80 2.35 3.05 0.0420 ld1-2r2 2.2 2.20 2.22 2.76 0.0470 ld1-2r7 2.7 2.70 2.11 2.52 0.0520 ld1-3r3 3.3 3.30 2.00 2.32 0.0580 ld1-3r9 3.9 3.90 1.75 2.14 0.0760 ld1-4r7 4.7 4.70 1.57 2.00 0.0940 ld1-5r6 5.6 5.60 1.51 1.75 0.1010 ld1-6r8 6.8 6.80 1.41 1.56 0.1170 ld1-8r2 8.2 8.20 1.32 1.41 0.1320 ld1-100 10 10.0 1.13 1.28 0.1820 ld1-120 12 12.0 1.05 1.18 0.2100 ld1-150 15 15.0 0.99 1.05 0.2350 ld1-180 18 18.0 0.83 0.98 0.3380 ld1-220 22 22.0 0.78 0.89 0.3780 ld1-270 27 27.0 0.67 0.87 0.5220 ld1-330 33 33.0 0.66 0.75 0.5400 ld1-390 39 39.0 0.63 0.68 0.5870 ld1-470 47 47.0 0.52 0.61 0.8440 ld1-560 56 56.0 0.50 0.57 0.9370 ld1-680 68 68.0 0.46 0.52 1.12 notes: 1) open circuit inductance test parameters: 100khz, 0.25vrms, 0.0adc +/-20% e xcept for ld1-330 to ld1-680 and ld2-470 to ld2-471 which is +/-10% 2) rms current for for an approximate t of 40?. it is recommended that the temperature of the part not exceed 125? 3) peak current for an approximate 10% rolloff at 20? 4) dcr limits @ 20?
ld series metalized drum core po wer inductor mechanical diagrams a xxx top vie w b marking c front view bo ttom view component side recommended pcb layout i i g h schematic 2 1 marking: ld1: xxx=inductance value per family chart ld2: "c" logo xxx=inductance value dimension a b c g h i +/-0.3 +/-0.3 +/-0.3 ref ref ref ld1 4.5 4.0 3.2 1.5 4.5 1.75 ld2 7.8 7.0 5.0 2.0 7.5 3.0 pa rt rated ocl (1) irms (2) isat (3) dcr (4) number inductance nominal amperes amperes ( ? ) (h) (max.) ld2-100 10 10.0 3.83 3.45 0.0700 ld2-120 12 12.0 3.57 3.20 0.0800 ld2-150 15 15.0 3.38 2.85 0.0900 ld2-180 18 18.0 3.19 2.60 0.1000 ld2-220 22 22.0 3.13 2.45 0.1100 ld2-270 27 27.0 2.81 2.10 0.1200 ld2-330 33 33.0 2.70 2.01 0.1300 ld2-390 39 39.0 2.42 1.85 0.1600 ld2-470 47 47.0 2.25 1.64 0.1800 ld2-560 56 56.0 1.96 1.50 0.2400 ld2-680 68 68.0 1.88 1.35 0.2800 ld2-820 82 82 1.63 1.28 0.3700 ld2-101 100 100 1.53 1.15 0.4300 LD2-121 120 120 1.43 1.09 0.4700 ld2-151 150 150 1.23 0.95 0.6400 ld2-181 180 180 1.15 0.87 0.7100 ld2-221 220 220 1.00 0.79 0.9600 ld2-271 270 270 0.94 0.73 1.11 ld2-331 330 330 0.83 0.64 1.26 ld2-391 390 390 0.78 0.58 1.77 ld2-471 470 470 0.74 0.55 1.96 notes: 1) open circuit inductance test parameters: 100khz, 0.25vrms, 0.0adc +/-20% e xcept for ld1-330 to ld1-680 and ld2-470 to ld2-471 which is +/-10% 2) rms current for for an approximate t of 40?. it is recommended that the temperature of the part not exceed 125? 3) peak current for an approximate 10% rolloff at 20? 4) dcr limits @ 20? dimensions in millimeters. option code option code description -r rohs compliant version
ld series metalized drum core po wer inductor xxx user direction feed 12.0 16.0 xxx xxx xxx ld2 series pa ck a ging information 8.0 12.0 xxx xxx xxx xxx user direction feed ld1 series pa r ts packaged on 13" diameter reel, 2,000 parts per reel. pa r ts packaged on 13" diameter reel, 1,000 parts per reel. a ctual size ld1 a ctual size ld2 ocl vs isat ld1 0 10 20 30 40 50 60 70 80 90 100 010203 0405060708 090 100 110 120 % of isat ocl (%) ocl vs isat ld2 0 10 20 30 40 50 60 70 80 90 100 010203 0405060708 090 100 110 120 % of isat ocl (%) rolloff visit us on the web at www.cooperet.com 3601 quantum boulevard boynton beach, florida 33426-8638 t el: +1-561-752-5000 toll free: +1-888-414-2645 fax: +1-561-742-1178 this bulletin is intended to present product design solutions and technical information that will help the end user with design applications. cooper electronic t echnologies reserves the right, without notice, to change design or construction of any products and to discontinue or limit d istribution of any products. cooper electronic technologies also reserves the right to change or update, without notice, any technical information contained in thi s bulletin. once a product has been selected, it should be tested by the user in all possible applications. life support policy: cooper electronic technologies does not authorize the use of any of its products for use in life support d evices or systems without the express written approval of an officer of the company. life support systems are devices which support or sustain life, and whos e failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in signifi cant injury to the user. pm-4317 7/05 ? cooper electronic t echnologies 2005
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