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LM2672 Arkusz danych(PDF) 9 Page - Texas Instruments |
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LM2672 Arkusz danych(HTML) 9 Page - Texas Instruments |
9 / 36 page 9 LM2672 www.ti.com SNVS136L – SEPTEMBER 1998 – REVISED JUNE 2016 Product Folder Links: LM2672 Submit Documentation Feedback Copyright © 1998–2016, Texas Instruments Incorporated Typical Characteristics (continued) Figure 13. Dropout Voltage, 3.3-V Option Figure 14. Dropout Voltage, 5-V Option 7.11 Typical Characteristics – Fixed Output Voltage Versions see Figure 19 VSW pin voltage, 10 V/div VIN = 20 V, VOUT = 5 V, Inductor current, 0.5 A/div ILOAD = 1 A, L = 47 μH, Output ripple voltage, 20 mV/div AC-coupled COUT = 68 μF, COUTESR = 50 mΩ Figure 15. Continuous Mode Switching Waveforms, Horizontal Time Base: 1 μs/div VSW pin voltage, 10 V/div VIN = 20 V, VOUT = 5 V, Inductor current, 0.5 A/div ILOAD = 300 mA, L = 15 μH, Output ripple voltage, 20 mV/div AC-coupled COUT = 68 μF (2×), COUTESR = 25 mΩ Figure 16. Discontinuous Mode Switching Waveforms, Horizontal Time Base: 1 μs/div Output voltage, VIN = 20 V, VOUT = 5 V, 100 mV/div, AC-coupled ILOAD = 1 A, L = 47 μH, Load current: 200 mA to 1 A load pulse COUT = 68 μF, COUTESR = 50 mΩ Figure 17. Load Transient Response for Continuous Mode, Horizontal Time Base: 50 μs/div Output voltage, VIN = 20 V, VOUT = 5 V, 100 mV/div, AC-coupled L = 47 μH, Load current: 100 mA to 300 mA load pulse COUT = 68 μF, COUTESR = 50 mΩ Figure 18. Load Transient Response for Discontinuous Mode, Horizontal Time Base: 200 μs/div |
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