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MIC4681YM Datasheet(PDF) 9 Page - Micrel Semiconductor |
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MIC4681YM Datasheet(HTML) 9 Page - Micrel Semiconductor |
9 / 16 page April 2005 9 MIC4681 MIC4681 Micrel Bode Plots The following bode plots show that the MIC4681 is stable over all conditions using a 68 µF inductor (L) and a 220µF output capacitor (C OUT). To assure stability, it is a good practice to maintain a phase margin of greater than 35°. No-Load Stability Phase Margin = 94 ° V IN = 7V V OUT = 5.0V I OUT = 0A Amb = 22 °C L = 68 µF C OUT = 220µF Full-Load Stability Phase Margin = 74 ° V IN = 7V V OUT = 5.0V I OUT = 1.1A Amb = 22 °C L = 68 µF C OUT = 220µF No-Load Stability Phase Margin = 102 ° V IN = 12V V OUT = 5.0V I OUT = 0A Amb = 22 °C L = 68 µF C OUT = 220µF Full-Load Stability Phase Margin = 59 ° V IN = 30V V OUT = 5.0V I OUT = 1.1A Amb = 22 °C L = 68 µF C OUT = 220µF No-Load Stability Phase Margin = 118 ° V IN = 30V V OUT = 5.0V I OUT = 0A Amb = 22 °C L = 68 µF C OUT = 220µF Full-Load Stability Phase Margin = 53 ° V IN = 12V V OUT = 5.0V I OUT = 1.4A Amb = 22 °C L = 68 µF C OUT = 220µF |
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