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LM2675N-ADJ 数据表(PDF) 9 Page - Texas Instruments |
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LM2675N-ADJ 数据表(HTML) 9 Page - Texas Instruments |
9 / 30 page LM2675 www.ti.com SNVS129E – MAY 2004 – REVISED JUNE 2005 Typical Performance Characteristics (Circuit of Figure 22) Continuous Mode Switching Waveforms Discontinuous Mode Switching Waveforms VIN = 20V, VOUT = 5V, ILOAD = 1A VIN = 20V, VOUT = 5V, ILOAD = 300 mA L = 47 μH, COUT = 68 μF, COUTESR = 50 mΩ L = 15 μH, COUT = 68 μF (2×), COUTESR = 25 mΩ A: VSW Pin Voltage, 10 V/div. A: VSW Pin Voltage, 10 V/div. B: Inductor Current, 0.5 A/div B: Inductor Current, 0.5 A/div C: Output Ripple Voltage, 20 mV/div AC-Coupled C: Output Ripple Voltage, 20 mV/div AC-Coupled Figure 18. Horizontal Time Base: 1 μs/div Figure 19. Horizontal Time Base: 1 μs/div Load Transient Response for Continuous Mode Load Transient Response for Discontinuous Mode VIN = 20V, VOUT = 5V, ILOAD = 1A VIN = 20V, VOUT = 5V, L = 47 μH, COUT = 68 μF, COUTESR = 50 mΩ L = 47 μH, COUT = 68 μF, COUTESR = 50 mΩ A: Output Voltage, 100 mV/div, AC-Coupled. A: Output Voltage, 100 mV/div, AC-Coupled. B: Load Current: 200 mA to 1A Load Pulse B: Load Current: 100 mA to 400 mA Load Pulse Figure 20. Horizontal Time Base: 50 μs/div Figure 21. Horizontal Time Base: 200 μs/div Copyright © 2004–2005, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Links: LM2675 |
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