Simple Switcher LM257X • Schott Corporation has worked closely with National Semiconductor to biuld a line of premium inductors designed specifically for use with the Simple Switcher® in DC/DC applications. Excellent self-shielding makes these inductors ideal for any EMI-sensitive use. • The gapped core assures stable inductance with varying DC current. These characteristics are combined with low DC resistance to enable cooler running parts with less ripple. Simple Switcher Specifications Schott P/N Previous Schott P/N NSC Reference Inductance µ H Mi n Saturating Current Amps DC Maximum DCR Ohms Configuration 34037 67126980 L 47 42-50 3.00 0.025 18x11 PC 34038 67126990 L 68 65-78 3.00 0.030 22x13 PC 34039 67127000 L 100 92-112 3.00 0.035 22x13 PC 34040 67127010 L 150 135-160 2.00 0.045 22x13 PC 34041 67127020 L 220 200-240 1.30 0.070 18x11 PC 34042 67127030 L 330 300-360 1.00 0.110 18x11 PC 34043 67127040 L 470 430-510 0.95 0.145 18x11 PC 34044 67127050 L 680 620-730 0.62 0.175 18x11 PC 34045 67127060 H 150 135-165 3.00 0.060 22x13 PC 34046 67127070 H 220 195-235 3.00 0.040 30x19 PC 34047 67127080 H 330 295-355 3.00 0.070 30x19 PC 34048 67127090 H 470 430-520 1.90 0.060 30x19 PC 34049 67127100 H 680 620-750 1.30 0.280 22x13 PC 34050 67127110 H1000 900-1100 0.90 0.250 22x13 PC 34051 67127120 H1500 1400-1600 0.62 0.260 22x13 PC 34052 67127130 H2200 2000-2400 0.42 0.900 18x11 PC Parts availability subject to Schott manufacturing schedules and leadtimes. Not all parts available from stock. Please contact us for more details and availability. The Adobe Acrobat Reader is required to view these linked documents. Electrical Specifications Test Criteria 1. These inductors are designed for operating within a temperature range of -40°C to +130°C. All electrical characteristics are reported for operating at 25°C. 2. Inductance is measured at 10 kHz, 0.1 Vrms, except for parts #67127030, 040, and 050 which are measured at 10 kHz, 0.2 Vrms. 3. Saturating current is the current at which the inductance is equal to a minimum of 90% of the rated value. All data is believed to be accurate at time of printing. Schott Corporation reserves the right to make changes without notification. “Schott” is a trade name of Schott Corporation. All other trademarks and trade names are the property of their respective holder. © 2001 Schott Corporation 1000 Parkers Lake Road, Wayzata, Minnesota 55391 U.S.A. Tel: + (952) 475-1173 Fax: + (952) 475-1786 Email: [email protected] Web: http://www.schottcorp.com All statements and technical information contained herein are believed to be accurate, but the accuracy and completeness thereof is not guaranteed. If any product is found to be defective, Schott Corporation’s (Seller) only obligation shall be to replace such quantity of the product proved to be defective. User shall determine the suitability of the product for the intended use, and user assumes all risk and liability whatsoever in connection herewith. Seller shall not be liable for any direct, consequential, or incidental loss or damage. Conditions not specifically stated herein shall be governed by established trade customs. Schott Corporation reserves the right to makes changes without notification. “Schott” is a trade name of Schott Corporation. All other trademarks and trade names are the property of their respective holder. ©2001 Schott Corporation Schott Corporation 1000 Parkers Lake Road Wayzata, Minnesota 55391 U.S.A. Tel: + (952) 475-1173 Fax: + (952) 475-1786 Email: [email protected] Web: http://www.schottcorp.com