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FAN1950 Folha de dados(PDF) 8 Page - Fairchild Semiconductor |
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FAN1950 Folha de dados(HTML) 8 Page - Fairchild Semiconductor |
8 / 11 page FAN1950/FAN1951 8 REV. 0.1.6 8/30/04 Input and Output Capacitor Requirements A 4.7µF or greater Input Capacitor (Ceramic or Tanta- lum), installed closely between VIN and GND leads of the part, is required for stability, better transient response, noise and ripple rejection. A higher value of electrolytic input capacitor can be recommended if the bulk capacitor of the power supply is located more than 3– 4 inches from the device or a large and fast-rise- time load is a requirement. FAN1950 and FAN1951, as most of LDO regulators, require an Output Capacitor. The recommended value of this capacitor is 10µF. The larger capacitor will additionally improve the Transient Response, Ripple Rejection and output noise. The low-ESR Tantalum capacitors are the best for this application: they provide stable work and good transient response over the tem- perature range. Using the Ceramic capacitors as the Output capacitor can provoke instability (oscillation in the Output Voltage). Aluminum electrolytic capacitors also can be used if their ESR is below 3 Ω. |
Nº de peça semelhante - FAN1950 |
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Descrição semelhante - FAN1950 |
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