Thru-Hole Power Inductor ELECTRONICS INC. EPI AC1 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 & 260 KHz Switching Frequency • Low Cost Inductor Primary Specification Part Number National Semiconductor Chip Induct. (µH ± 15%) @ 0 Adc DCR (Ω Typ.) Induct. (µH 10%) @ Idc Idc (mA) EPI100452AC1 EPI150352AC1 EPI150352AC1 LM267X-L45 LM267X-L34 LM259X-L34 13.5 20.0 20.0 0.022 0.035 0.035 10 15 15 4500 3500 3500 Core Loss @ Vt1 @ Vt2 (mW) (mW) ----55 Vt1 (V-µSec) 150 KHz Vt2 (V-µSec) 260 KHz ----12.7 7.2 8.7 --- 55 55 --- Temp.Rise @ Vt1 @ Vt2 °C (Typ.) °C (Typ.) 45 --43 ----43 For no header version : add “V” for Vertical Mount and add “H” for Horizonal Mount Applications Unregulated DC Input Cin Feedback +Vin LM259X Output Vsw + D1 1N5822 Gnd LX µH CB Regulated Output Load + Vin Vsw Cout LX 10nF µH + Cout Gnd Package AC1 Pad Layout Package AC1H Pad Layout .060 Ø (1.52) .185 (4.70) .060 Ø (1.52) .580 Max. (14.99) .220 (5.59) .360 9.14) .550 Max. (13.97) .375 ± .125 (9.53 ± 3.18) .465 (11.81) .715 Max. (18.16) Pad Layout .375 ± .125 (9.53 ± 3.18) .185 (4.70) Vout D1 On/Off Package AC1V .550 Max. (13.97) LM267X 8V-40V + Cin On/Off .250 Max. (6.35) FB .550 Max. (13.97) .290 (7.37) .110/.150 (2.79/3.81) .220 (5.59) .465 (11.81) .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. CSIXXXXXXAC1 Rev. 3 2/22/05 TEL: (818) 892-0761 FAX: (818) 894-5791 http://www.pca.com