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LM2673S-ADJ Fiches technique(PDF) 8 Page - Texas Instruments |
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LM2673S-ADJ Fiches technique(HTML) 8 Page - Texas Instruments |
8 / 37 page 8 LM2673 SNVS030O – APRIL 2000 – REVISED JUNE 2016 www.ti.com Product Folder Links: LM2673 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 = 3 A L = 33 µH, COUT = 200 µF, COUTESR = 26 mΩ A: VSW Pin Voltage, 10 V/div B: Inductor Current, 1 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//iv Load Transient Response for Continuous Mode VIN = 20 V, VOUT = 5 V L = 33 µH, COUT = 200 µF, COUTESR = 26 mΩ A: Output Voltage, 100 mV//div, AC-Coupled. B: Load Current: 500-mA to 3-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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