description ? 125 maximum total temperature operation ? low profile surface mount inductor ? 10.3mm x 10.5mm x 5.0mm shielded drum core ? ferrite core material ? inductance range from 0.7? to 1000? ? current range from 13.5 amps to 0.43 amps ? frequency range up to 1mhz applications ? computer, dvd players, and portable power devices ? notebook power, lcd panels ? dc-dc converters ? buck, boost, forward, and resonant converters ? noise filtering and filter chokes environmental data ? storage temperature range: -40 to +125? ? operating temperature range: -40 to +125? (range is application specific) ? solder reflow temperature: +260 max. for 10 seconds maxim um packaging ? supplied in tape and reel packaging, 500 per reel dr1050 series low profile power inductors part number rated ocl (1) irms(2) isat (3) dcr ( ) dcr ( ) k-factor inductance ? 30% amperes amperes m @20 m @20 (4) (?) (typical) (maximum) dr1050-r80-r 0.8 0.70 9.70 13.50 3.2 4.0 20.47 dr1050-1r5-r 1.5 1.37 8.60 10.50 4.0 5.0 14.62 dr1050-2r2-r 2.2 2.27 7.52 9.25 5.6 6.8 11.37 dr1050-3r3-r 3.3 3.21 6.50 8.20 8.0 10.0 9.30 dr1050-4r7-r 4.7 4.43 6.13 6.70 9.5 11.9 7.87 dr1050-6r8-r 6.8 6.30 5.45 5.80 13.0 16.5 6.82 dr1050-8r2-r 8.2 8.09 5.24 5.00 15.1 19.0 6.02 dr1050-100-r 10 10.1 4.80 4.58 18.0 22.5 5.39 dr1050-120-r 12 11.6 3.94 4.10 24.3 30.4 4.87 dr1050-150-r 15 14.8 3.80 3.70 26.0 32.5 4.45 dr1050-180-r 18 17.5 3.39 3.30 32.8 41.0 4.09 dr1050-220-r 22 23.5 3.12 3.00 38.7 48.4 3.53 dr1050-270-r 27 26.9 2.82 2.80 42.6 53.3 3.30 DR1050-330-R 33 34.3 2.56 2.50 57.5 71.9 2.92 dr1050-390-r 39 38.3 2.35 2.35 60.7 75.9 2.77 dr1050-470-r 47 47.1 2.06 2.10 89.0 111 2.50 dr1050-560-r 56 56.7 1.96 1.94 98.0 123 2.27 dr1050-680-r 68 67.2 1.84 1.70 111 139 2.09 dr1050-820-r 82 84.4 1.60 1.58 147 184 1.86 dr1050-101-r 100 97.5 1.52 1.45 164 205 1.73 dr1050-121-r 120 118.3 1.30 1.30 223 279 1.57 dr1050-151-r 150 149.2 1.26 1.15 238 298 1.40 dr1050-181-r 180 183.7 1.18 1.08 273 341 1.26 dr1050-221-r 220 221.8 1.00 0.98 377 472 1.15 dr1050-271-r 270 263.5 0.96 0.90 410 513 1.06 dr1050-331-r 330 320.6 0.83 0.80 554 693 0.96 dr1050-391-r 390 396.5 0.76 0.72 648 810 0.86 dr1050-471-r 470 480.5 0.64 0.62 855 1069 0.78 dr1050-561-r 560 572.6 0.62 0.60 970 1213 0.72 dr1050-681-r 680 707.9 0.56 0.55 1095 1369 0.64 dr1050-821-r 820 818.7 0.54 0.50 1185 1481 0.60 dr1050-102-r 1000 1000.2 0.43 0.48 1528 1950 0.54 (1) open circuit inductance test parameters: 100khz, 0.1v, 0.0adc. (2) irms: dc current for an approximate ? t of 40 without core loss. derating is necessary for ac currents. pcb layout, trace thickness and width, air-flow, and proximity of other heat generating components will affect the temperature rise. it is recommended that the temperature of the part not exceed 125 under worst case operating conditions verified in the end application. (3) isat amperes peak for approximately 35% rolloff (@25) (4) k-factor: used to determine b p-p for core loss (see graph). b p-p = k*l* ? i, b p-p(mt), k: (k factor from table), l: (inductance in ?), ? i (peak to peak ripple current in amps). (5) part number definition: dr1050-xxx-r dr1050 = product code and size; -xxx = inductance value in uh; r = decimal point; if no r is present, third character = # of zeros. -r suffix = rohs compliant rohs 2002/95/ec
dr1050 series low profile power inductors core loss 10 0khz 20 0khz 3 0 0khz 5 0 0khz 0. 0001 0. 001 0. 01 0. 1 1 10 1101 0 01 0 0 0 c o r e l o s s ( w ) bp-p ( mt) z z z z 1mh z 2.0 ko=5.3 mm b1=1 0.7 mm a1=10.5 mm bo=11.0 mm ao=10.8 mm 1.5 dia +0.1/-0.0 bo ko sec tion a-a b 1 wwlly r xx x a1 12.0 24.0 + /-0.3 1.5 dia min a 1.75 a 4.0 user d irec tion of feed ao 16.0 parts packaged on 13" diameter reel, 500 par ts per reel. packaging information dimensions are in millimeters. x xx = inductance value in uh. r = decimal point. if no r is present third character = # of zeros. wwllyy = date code, r = revision level. top view front view bottom view left view 10.3 max. 1 0.5 max. 5.0 max. 3 .0 7 .7 xxx wwlly r 1 2 recommended pcb layout schemati c 1 2 3.3 7 .3 1.6 1 .2 mechanical diagrams
o cl vs. i sat 0.0% 20.0% 40.0% 60.0% 80.0% 100.0% 120.0% 0% 20% 40% 60% 80% 100% 120% 140% % of i sat % o f o c l -40 deg. c + 25 deg. c+ 85 deg. c inductance characteristics dr1050 series low profile power inductors temperature rise vs. loss tempe ratu re ris e vs. tot al loss 0 .00 20. 00 40. 00 60. 00 80. 00 100.00 12 0. 00 14 0. 00 16 0. 00 0 .00 0.20 0 .40 0.60 0.80 1.00 1.20 total loss (w) t e m p e r a t u r e r i s e ( c ) visit us on the web at www.cooperbussmann.com 1225 brok en sound pkwy . suite f boca raton, fl 33487 t el: +1-561-998-4100 toll free: +1-888-414-2645 fax: +1-561-241-6640 this bulletin is intended to present product design solutions and technical information that will help the end user with design applications. cooper electronic technologies reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. cooper electronic technologies also reserves the right to change or update, without notice, any technical information contained in this 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 devices or systems without the express written approval of an officer of the company. life support systems are devices which support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user. pm-4139 3/07 cooper electronic technologies 2007
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