Thru-Hole Power Inductor ELECTRONICS INC. EPI AC3 Series • Optimized for National’s LM267X & LM259X Series • Low loss material ensures operation in high frequency switching converters, such as Buck, Boost or as output averaging filter inductor • Also suitable for use in high quality filter applications • 150 KHz & 500 KHz Switching Frequency • Low Cost Inductor Primary Specification Part Number National Semiconductor Chip EPI220502AC3 Induct. (µH ± 20%) @ 0 Adc DCR (Ω Typ.) Induct. (µH 15%) @ Idc Idc (mA) Core Loss @ Vt1 @ Vt2 (mW) (mW) Vt1 (V-µSec) 150 KHz Vt2 (V-µSec) 260 KHz 0.025 290 22 --5000 27 --LM267X-L41 0.025 290 22 --5000 27 --LM267X-L50 0.038 260 --33 4000 40 --LM267X-L40 0.046 --33.4 33 3500 38 210 LM259X-L40 0.074 --40.0 47 3500 60 185 LM259X-L39 0.074 185 --47 3500 60 --LM267X-L39 0.090 --46.7 68 3000 87 155 LM259X-L38 0.090 155 --68 3000 87 --LM267X-L38 0.091 --26.7 68 3500 91 45 LM267X-L44 0.091 60 --68 3500 91 --LM259X-L44 0.110 --55.4 100 2500 128 155 LM259X-L37 0.260 --56.7 150 2000 194 113 LM259X-L36 0.394 -73.4 220 1500 265 134 LM259X-L35 For no header version : add “V” for Vertical Mount and add “H” for Horizonal Mount EPI330402AC3 EPI330352AC3 EPI470352AC3 EPI680302AC3 EPI680352AC3 EPI101252AC3 EPI151202AC3 EPI221152AC3 23.1 23.1 27.0 ----28.5 --30.8 --12.7 ------ Temp.Rise @ Vt1 @ Vt2 °C (Typ.) °C (Typ.) --35 --35 --34 31 --42 ----42 37 ----37 43 ----44 33 --43 --39 --- Applications Unregulated DC Input Cin Feedback +Vin LM259X Output Vsw + LX µH D1 1N5822 Gnd CB Regulated Output Load + Vsw LX 10nF µH On/Off On/Off + Cout Gnd Package AC3 Package AC3H Pad Layout .060 Ø (1.52) .280 (7.11) .840 Max. (21.33) .060 Ø (1.52) .300 (7.62) .470 Max. (11.94) .840 Max. (21.33) .375 ± .125 (9.53 ± 3.18) .720 (18.29) .950 Max. (24.13) Pad Layout .375 ± .125 (9.53 ± 3.18) .280 (7.11) Vout D1 Pad Layout .840 Max. (21.33) LM267X 8V-40V + Cin Cout Package AC3V .470 Max. (11.94) FB Vin .415 (10.54) .110/.150 (2.79/3.81) .300 (7.62) .840 Max. (21.33) .720 (18.29) .060 Ø (1.52) Unless Otherwise Specified Dimensions are in Inches /mm ± .010 /.25 PCA ELECTRONICS, INC. 16799 SCHOENBORN ST. NORTH HILLS, CA 91343 Product performance is limited to specified parameters. Data is subject to change without prior notice. CSIXXXXXXAC3 Rev. 5 2/22/05 FT TEL: (818) 892-0761 FAX: (818) 894-5791 http://www.pca.com