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FAN5343 Fiches technique(PDF) 9 Page - Fairchild Semiconductor |
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FAN5343 Fiches technique(HTML) 9 Page - Fairchild Semiconductor |
9 / 11 page © 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN5343 • Rev. 1.0.4 9 Application Information Inductor and Output Capacitor Selection Table 1. Recommended External Components # of LEDs L Part Number Manufacturer Min. COUT Part Number Manufacturer 5, 6 10.0µH LQH43MN100K03 Murata 1.00µF UMK212BJ105KG Taiyo Yuden NLCV32T-100K-PFR TDK VLF3010AT-100MR49-1 TDK Component Placement and PCB Recomendations Figure 15. Recommended Component Placement Input Capacitance In a typical application, the input and output capacitors should be placed as close to the IC as possible; no additional capacitance is needed to ensure proper functionality. However, in a testing environment, where the FAN5343 is typically powered by a power supply with relatively long cables, an additional input capacitor (10µF) may be needed to ensure stable functioning. This capacitor should be placed close to where the power supply cables attach to the FAN5343 evaluation board. PCB Recommendations The inductor can be connected to VIN with vias through another layer if needed. The feedback pin should be connected back to the IC on a sub-layer. |
Numéro de pièce similaire - FAN5343 |
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Description similaire - FAN5343 |
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