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MMPF0200Z 数据表(PDF) 43 Page - NXP Semiconductors |
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MMPF0200Z 数据表(HTML) 43 Page - NXP Semiconductors |
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43 / 118 page  Analog Integrated Circuit Device Data Freescale Semiconductor 43 PF0200Z Functional Block Requirements and Behaviors Power Generation SW1A/B External Components Table 45. Register SW1ABCONF - ADDR 0x24 Name Bit # R/W Default Description SW1ABILIM 0 R/W 0x00 SW1AB current limit level selection 0 = High level current limit 1 = Low level current limit UNUSED 1 R/W 0x00 Unused SW1ABFREQ 3:2 R/W 0x00 SW1A/B switching frequency selector See Table 36. SW1ABPHASE 5:4 R/W 0x00 SW1A/B Phase clock selection See Table 34. SW1ABDVSSPEED 7:6 R/W 0x00 SW1A/B DVS speed selection See Table 32. Table 46. SW1A/B External Component Recommendations Mode Components Description A/B Single Phase CINSW1A(37) SW1A Input capacitor 4.7 F CIN1AHF(37) SW1A Decoupling input capacitor 0.1 F CINSW1B(37) SW1B Input capacitor 4.7 F CIN1BHF(37) SW1B Decoupling input capacitor 0.1 F COSW1AB(37) SW1A/B Output capacitor 4 x 22 F LSW1A SW1A/B Inductor 1.0 H DCR = 12 m ISAT = 4.5 A Notes 37. Use X5R or X7R capacitors. |
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