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STW41412 bảng dữ liệu(PDF) 6 Page - STMicroelectronics |
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STW41412 bảng dữ liệu(HTML) 6 Page - STMicroelectronics |
6 / 31 page STw4141 List of figures 5/30 List of figures Figure 1. Pin assignment in TFBGA 3x3 mm - 16 bumps 0.5 mm pitch . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 2. Smooth start-up sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 3. Settling time of VOUT2, IOUT1 = 200mA, IOUT2 = 400mA . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 4. Line transient, VOUT1 = 1.8V @ 100mA, VOUT2 = 1.2V @ 100mA . . . . . . . . . . . . . . . . . 12 Figure 5. Load transient in AUTO mode VIN = 3.6V, VOUT1 = 1.8V, VOUT2 = 1.2V . . . . . . . . . . . . 12 Figure 6. Load transient in PWM mode, IOUT1 = 1mA to 200mA, IOUT2 = 1mA to 400mA. . . . . . . 13 Figure 7. Switching between PFM to PWM - VIN = 3.6V, IOUT1 = 10mA, IOUT2 = 10mA. . . . . . . . 14 Figure 8. Switching between PWM to PFM - VIN = 3.6V, IOUT1 = 10mA, IOUT2 = 10mA. . . . . . . . 14 Figure 9. Switching regulator efficiency in PWM mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Figure 10. Switching regulator efficiency in auto mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Figure 11. Output voltages versus output currents in PWM and PFM . . . . . . . . . . . . . . . . . . . . . . . . . 17 Figure 12. Automatic PWM/PFM switch schematic example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Figure 13. PWM/PFM forced mode schematic example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Figure 14. Application using external clock synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Figure 15. Board layout track length and width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Figure 16. Demoboard top layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Figure 17. Demoboard assembled with 22 µF output capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Figure 18. TFBGA16 ball pad spacing and track parameters to internal pads . . . . . . . . . . . . . . . . . . 24 Figure 19. PCB routing example using TFBGA16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Figure 20. TFBGA 3x3x1.20 16 F4x4 0.50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 |
Số phần tương tự - STW41412 |
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Mô tả tương tự - STW41412 |
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