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LM2679SX-5.0 Datasheet(PDF) 8 Page - Texas Instruments |
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LM2679SX-5.0 Datasheet(HTML) 8 Page - Texas Instruments |
8 / 37 page 8 LM2679 SNVS026O – MARCH 2000 – REVISED JUNE 2016 www.ti.com Product Folder Links: LM2679 Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Typical Characteristics (continued) Figure 7. Switching Frequency Figure 8. Feedback Pin Bias Current Continuous Mode Switching Waveforms VIN = 20 V, VOUT = 5 V, ILOAD = 5 A, L = 10 μH, COUT = 400 μF, COUTESR = 13 mΩ A. VSW pin voltage, 10 V/div B. Inductor current, 2 A/div C. Output ripple voltage, 20 mV/div AC-coupled Figure 9. Horizontal Time Base: 1 μs/div Discontinuous Mode Switching Waveforms VIN = 20 V, VOUT = 5 V, ILOAD = 500 mA, L = 10 μH, COUT = 400 μF, COUTESR = 13 mΩ A. VSW pin voltage, 10 V/div B. Inductor current, 1 A/div C. Output ripple voltage, 20 mV/div AC-coupled Figure 10. Horizontal Time Base: 1 μs/div Load Transient Response for Continuous Mode VIN = 20 V, VOUT = 5 V, L = 10 μH, COUT = 400 μF, COUTESR = 13 mΩ A. Output voltage, 100 mV/div, AC-coupled B. Load current: 500-mA to 5-A load pulse Figure 11. Horizontal Time Base: 100 μs/div Load Transient Response for Discontinuous Mode VIN = 20 V, VOUT = 5 V, L = 10 μH, COUT = 400 μF, COUTESR = 13 mΩ A. Output voltage, 100 mV/div, AC-coupled B. Load current: 200-mA to 3-A load pulse Figure 12. Horizontal Time Base: 200 μs/div |
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