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LM3355 Fiches technique(PDF) 7 Page - National Semiconductor (TI) |
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LM3355 Fiches technique(HTML) 7 Page - National Semiconductor (TI) |
7 / 9 page Filter Capacitor Selection (Continued) iii) C FIL A 1 µF, X7R ceramic capacitor should be connected to pin C FIL. This capacitor provides the filtering needed for the internal supply rail of the LM3355. Of the different capacitor technologies, a sample of vendors that have been verified as suitable for use with the LM3355 are shown in Table 2. TABLE 2. Capacitor Vendor Information Manufacturer Tel Fax Website Ceramic Taiyo-yuden (408) 573-4150 (408) 573-4159 www.t-yuden.com AVX (803) 448-9411 (803) 448-1943 www.avxcorp.com Sprague/Vishay (207) 324-4140 (207) 324-7223 www.vishay.com Tantalum Nichicon (847) 843-7500 (847) 843-2798 www.nichicon.com Polymer Electrolytic Cornell-Dubilier (ESRD) (508) 996-8561 (508) 996-3830 www.cornell-dubilier.com Sanyo (POSCAP) (619) 661-6322 (619) 661-1055 www.sanyovideo.com Thermal Protection During output short circuit conditions, the LM3355 will draw high currents causing a rise in the junction temperature. On-chip thermal protection circuitry disables the charge pump action once the junction temperature exceeds the thermal trip point, and re-enables the charge pump when the junction temperature falls back to a safe operating point. Typical Application Circuits DS200219-33 FIGURE 2. Basic Buck/Boost Regulator DS200219-15 FIGURE 3. Low Output Noise and Ripple Buck/Boost Regulator www.national.com 7 |
Numéro de pièce similaire - LM3355 |
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Description similaire - LM3355 |
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