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MIC2606 bảng dữ liệu(PDF) 12 Page - Microchip Technology |
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MIC2606 bảng dữ liệu(HTML) 12 Page - Microchip Technology |
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12 / 20 page ![]() MIC2605/6 DS20006620A-page 12 2021 Microchip Technology Inc. and its subsidiaries. 4.4.2 OUTPUT CAPACITOR Output capacitor selection is also a trade-off between performance, size, and cost. Increasing output capacitance will lead to an improved transient response, but also an increase in size and cost. X5R or X7R dielectric ceramic capacitors are recommended for designs with the MIC2605 and the MIC2606. Y5V values may be used, but to offset their tolerance overtemperature, more capacitance is required. 4.4.3 INPUT CAPACITOR A minimum 1 μF ceramic capacitor is recommended for designing with the MIC2605 and the MIC2606. Increasing input capacitance will improve performance and greater noise immunity on the source. The input capacitor should be as close as possible to input voltage pin (VIN) of the device for good noise performance. 4.4.4 FEEDBACK RESISTORS The MIC2605 and the MIC2606 each utilize a feedback pin to compare the output to an internal reference. The output voltage is adjusted by selecting the appropriate feedback resistor network values. The R2 resistor value must be less than or equal to 1 kΩ (R2 ≤ 1 kΩ). The desired output voltage can be calculated as follows: EQUATION 4-3: VOUT VREF R1 R2 ------- 1 + = Where: VREF = 1.25V |
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