SWS-1.81-168

SW Series • Inductors for National's 150kHz Simple SwitcherTM SW Series low costtoroidal inductors, designed for use with National Semiconductor's 150kHz Simple Switcher TM Part Numbers LM259X-L1 through LM259X-L44 and LM258X-L AMGIS Date Code SWS-xxx-xx Features • High energy storage with minimum saturation • High stability from no load to full load AMGIS Date Code SWT-xxx-xx • Available in both SMD and TH versions • Manufactured in ISO-9001 approved facility • Operating temperature range: -40°C to +125°C Electrical Specifications at 25°C ambient Part Number SW_-0.13-259 National Part Number LM-259X-L1 Rated Current (iDC) LN (µH) ± 20% ETOP (V-µSec) Max. DCR (Ohms) Energy Storage (µJ) 0.13 259 23.1 3.40 2 SW_-0.16-178 LM-259X-L2 0.16 178 16.5 2.80 2 SW_-0.20-118 LM-259X-L3 0.20 118 13.2 1.80 2 SW_-0.25-79 LM-259X-L4 0.25 79 9.9 1.50 2 SW_-0.30-55 LM-259X-L5 0.30 55 6.6 1.00 2 SW_-0.34-39 LM-259X-L6 0.34 39 6.6 0.80 2 SW_--0.45-26 LM-259X-L7 0.45 26 6.6 0.62 3 SW_-0.20-374 LM-259X-L8 0.20 374 75.9 2.70 7 SW_-0.25-256 LM-259X-L9 0.25 256 33.0 2.20 8 SW_-0.30-176 LM-259X-L10 0.30 176 26.4 1.40 8 SW_-0.38-118 LM-259X-L11 0.38 118 19.8 1.20 9 SW_-0.46-78 LM-259X-L12 0.46 78 16.5 0.80 8 SW_-0.56-55 LM-259X-L13 0.56 55 13.2 0.50 9 SW_-0.68-39 LM-259X-L14 0.68 39 9.9 0.30 9 SW_-0.84-26 LM-259X-L15 0.84 26 6.6 0.20 9 SW_-1.02-17 LM-259X-L16 1.02 17 6.6 0.10 9 SW_-0.36-375 LM-259X-L17 0.36 375 75.9 1.30 24 SW_-0.44-252 LM-259X-L18 0.44 252 49.5 0.90 24 SW_-0.54-173 LM-259X-L19 0.54 173 36.3 0.60 25 SW_-0.67-115 LM-259X-L20 0.67 115 29.7 0.40 26 SW_-0.82-78 LM-259X-L21 0.82 78 23.1 0.30 26 SW_-1.0-54 LM-259X-L22 1.00 54 16.5 0.20 27 SW_-1.2-38 LM-259X-L23 1.20 38 13.2 0.10 27 SW_-1.48-26 LM-259X-L24 1.48 26 9.9 0.10 28 SW_-1.81-18 LM-259X-L25 1.81 18 9.9 0.06 29 SW_-0.68-377 LM-259X-L26 0.68 377 75.9 1.00 87 SW_-0.83-248 LM-259X-L27 0.83 248 72.6 0.60 85 SW_-1.02-168 LM-259X-L28 1.02 168 56.1 0.40 87 SW_-1.26-112 LM-259X-L29 1.26 112 42.9 0.30 89 SW_-1.54-77 LM-259X-L30 1.54 77 33.0 0.20 91 SW_-1.87-53 LM-259X-L31 1.87 53 26.4 0.13 93 SW_-2.24-37 LM-259X-L32 2.24 37 19.8 0.10 93 SW_-2.74-24 LM-259X-L33 2.74 24 16.5 0.07 90 SW_-3.00-17 LM-259X-L34 3.00 17 13.2 0.05 77 SW_-1.5-250 LM-259X-L35 1.50 250 72.6 0.23 281 SW_-1.81-168 LM-259X-L36 1.81 168 75.9 0.18 275 P ackag e "S" " C " & " T" S1 T1 S2 T2 S3 T3 S4 T4 S4 C1 - T4 S6 C3 AMGIS, LLC * 10830 Kinghurst Dr. Houston, TX 77099 Phone: 832-775-1319 * Fax: 281-933-9067* email: sales@amgistoroids.com Toll Free: 877-762-6447 * www.amgistoroids.com SW Series • Toroidal Inductors for National's 150kHz Simple SwitcherTM Electrical Specifications at 25°C National Part Number Part Number S W_-2.22-114 S W_-2.70-77 S W_-3.00-53 S W_-3.00-38 S W_-3.00-25 S W_-2.50-167 S W_-3.00-110 S W_-3.00-77 S W_-4.50-19 Rated Current (IDC) LN (µH) ± 20% ETOP (V-µSec) Max. DCR (Ohms) Energy Storage (µJ) 2.22 2.70 3.00 3.00 3.00 2.50 3.00 3.00 4.50 114 77 53 38 25 167 110 77 19 62.7 52.8 42.9 29.7 19.8 75.9 75.9 59.4 32.0* 0.10 0.09 0.08 0.05 0.04 0.14 0.09 0.08 0.02 281 281 239 171 113 522 495 347 192 LM-259X-L37 LM-259X-L38 LM-259X-L39 LM-259X-L40 LM-259X-L41 LM-259X-L42 LM-259X-L43 LM-259X-L44 LM-258X-L P ackag e "S" " C " & " T" S6 C3 S5 T5 - C2 C4 S6 C3 *Note: E TOP for P /N S W_-4.50-19 i s based on a frequency of 100kHz. A ll other i tems are rated at 150kHz. S i mple S wi tcherTM i s a trademark of Nati onal S emi conductor C orporati on. Dimensions Type SWS - Surface Mount D A B D Type SWT -Through Hole Mount Sizes T1 -T4 Suggested Pad Layout (Top side View) 2 Pad Width S6 S1 - S5 0.079 0.059 (2.00) (1.50) AMGIS E AMGIS Date Code SWT-xxx-xx A D D E Date Code SWS-xxx-xx D 1 E Suggested Pad Layout Size T5 0.035 (0.90) Schematic 1 C 2 B Schematic AMGIS 1 Date Code SWT-xxx-xx D 2 D Surface Coplanarity will be