pm-84 s h i e l d e d d r u m ( l d s 0 7 0 5 ) description ?125 maximum temperature operation ?7.8mm x 7.0mm x 5.0mm shielded drum core ?ferrite core material ?metalized core mounting utilizes board space ?inductance range from 0.82 h to 470? ?current range from 8.57 amps to 0.368 amps ?frequency range up to 1mhz applications ?buck or boost inductor ?noise filtering and output filter chokes ?battery power, dc-dc converters ?notebook power, pdas, hand held computers ?dvd players ?cellular phones environmental data ?storage temperature range: -40 to +125? ?operating temperature range: -40 to +125? (r ange is application specific) ? solder reflo w temperature: +260 max. for 10 seconds maxim um packaging ?supplied in tape and reel packaging, 1000 per reel lds0705 series shielded power inductors part number rated ocl (1) irms(2) isat (3) dcr ( ) k-factor inductance ? amperes amperes @20 (4) (?) (typical) lds0705-r82m-r 0.82 0.861 ?0% 7.68 8.57 0.0040 24.8 lds0705-1r5m-r 1.5 1.42 20% 6.17 6.67 0.0061 19.3 lds0705-2r2m-r 2.2 2.13?0% 5.06 5.45 0.009 15.8 lds0705-3r3m-r 3.3 2.97 ?0% 4.19 4.62 0.013 13.4 lds0705-4r7m-r 4.7 5.08 20% 3.32 3.53 0.021 10.2 lds0705-6r8m-r 6.8 6.34?0% 3.11 3.16 0.024 9.2 lds0705-8r2m-r 8.2 7.75?0% 2.67 2.86 0.033 8.3 lds0705-100m-r 10.0 9.30?0% 2.54 2.61 0.036 7.6 lds0705-150m-r 15.0 14.78?0% 2.04 2.07 0.056 6.0 lds0705-220m-r 22.0 21.53 ?0% 1.66 1.71 0.084 5.0 lds0705-330m-r 33.0 32.50?0% 1.48 1.40 0.107 4.0 lds0705-470m-r 47.0 45.71?0% 1.21 1.18 0.158 3.4 lds0705-680m-r 68.0 69.76 20% 0.985 0.952 0.240 2.8 LDS0705-820M-R 82.0 83.67?0% 0.850 0.870 0.323 2.5 lds0705-101m-r 100.0 98.9?0% 0.808 0.800 0.357 2.3 lds0705-151m-r 150.0 152.0?0% 0.649 0.645 0.554 1.9 lds0705-221m-r 220.0 216.5?0% 0.584 0.541 0.68 1.6 lds0705-331m-r 330.0 329.9?0% 0.470 0.438 1.06 1.3 lds0705-471m-r 470.0 467.0 ?0% 0.387 0.368 1.56 1.1 (1) open circuit inductance test parameters: 100khz, 0.1v, 0.0adc. (2) irms: dc current for an approximate ? t of 30 without core loss. derating is necessary for ac currents. pcb layout, trace thickness and width, air-flow, and pro ximity of other heat gener ating components will aff ect 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 f or appro ximately 15% 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) p ar t number definition: lds0705-xxx-r lds0705 = product code and size; -xxx = inductance value in uh; r = decimal point; if no r is present, third character = # of zeros. m = inductance toler ance +/- 20% -r suffix = rohs compliant ro hs 2002/95/ec
pm-85 s h i e l d e d d r u m ( l d s 0 7 0 5 ) lds0705 series shielded power inductors temperature rise vs. watt loss 0 10 20 30 40 50 60 70 80 90 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 tot al l oss ( w) t e m p . r i s e ( c ) p ar ts pac kaged on 13" diameter reel, 1,000 par ts per reel. packaging information d imensions are in millimeters. x xx = inductance in uh. r = decimal point. if no r is present third character = # of zeros. w wllyy = date code, r = revision level. recommen ded pcb l ayout schemat ic 2 1 top v iew xx x wwllyy r side view bottom view 7.0?.2 7.8 0.2 5 .0 ma x. 7.0 3.0 2.0 2 .0 typ. mechanical diagrams
pm-86 s h i e l d e d d r u m ( l d s 0 7 0 5 ) ocl vs. isat 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 10 0% 110% 120% 0% 20% 40% 60% 80% 100% 120% 140% 160% 180% 200% % of isat % o f o c l -40 25 85 inductance characteristics lds0705 series shielded power inductors core loss 1 mhz 500khz 3 00khz 2 00khz 1 00khz 50khz 0.0001 0.001 0.01 0.1 1 1 0 100 1 10 100 1000 bp-p (mt) c o r e l o s s ( w )
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