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FAN5362UMP29X Datenblatt(PDF) 11 Page - Fairchild Semiconductor |
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FAN5362UMP29X Datenblatt(HTML) 11 Page - Fairchild Semiconductor |
11 / 14 page © 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN5362 • Rev. 1.0.1 11 PCB Layout Guidelines There are only three external components: the inductor, input capacitor, and the output capacitor. For any buck switcher IC, including the FAN5362, it is important to place a low-ESR input capacitor very close to the IC, as shown in Figure 25. The input capacitor ensures good input decoupling, which helps reduce noise appearing at the output terminals and ensures that the control sections of the IC do not behave erratically due to excessive noise. This reduces switching cycle jitter and ensures good overall performance. It is important to place the common GND of CIN and COUT as close as possible to the C2 terminal. There is some flexibility in moving the inductor further away from the IC; in that case, VOUT should be considered at the COUT terminal. 0603 COUT C1 B1 A1 C2 B2 A2 Figure 25. PCB Layout Recommendation |
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Ähnliche Beschreibung - FAN5362UMP29X |
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