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LM2598T-12 Datasheet(PDF) 9 Page - National Semiconductor (TI) |
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LM2598T-12 Datasheet(HTML) 9 Page - National Semiconductor (TI) |
9 / 33 page Test Circuit and Layout Guidelines Fixed Output Voltage Versions DS012593-23 Component Values shown are for VIN = 15V, VOUT =5V, ILOAD = 1A. 120 µF, 50V, Aluminum Electrolytic Nichicon “PL Series” 120 µF, 35V Aluminum Electrolytic, Nichicon “PL Series” 3A, 40V Schottky Rectifier, 1N5822 68 µH, L30 Typical Values *CSS: — 0.1 µF CDELAY: — 0.1 µF RPull Up: — 4.7k Adjustable Output Voltage Versions DS012593-24 where VREF = 1.23V Select R1 to be approximately 1kΩ, use a 1% resistor for best stability. Component Values shown are for VIN = 20V, VOUT = 10V, ILOAD = 1A. CIN — 120 µF, 35V, Aluminum Electrolytic Nichicon “PL Series” COUT — 120 µF, 35V Aluminum Electrolytic, Nichicon “PL Series” D1 — 3A, 40V Schottky Rectifier, 1N5822 L1 — 100 µH, L29 R1 —1 k Ω,1% R2 — 7.15k, 1% CFF — 3.3 nF, See Application Information Section RFF —3 k Ω, See Application Information Section Typical Values CSS — 0.1 µF CDELAY — 0.1 µF RPULL UP — 4.7k FIGURE 1. Standard Test Circuits and Layout Guides www.national.com 9 |
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