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LM2574N-3.3 Fiches technique(PDF) 10 Page - Texas Instruments |
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LM2574N-3.3 Fiches technique(HTML) 10 Page - Texas Instruments |
10 / 35 page LM2574, LM2574HV SNVS104C – JUNE 1999 – REVISED APRIL 2013 www.ti.com Typical Performance Characteristics (Circuit of Figure 24) Continuous Mode Switching Waveforms Discontinuous Mode Switching Waveforms VOUT = 5V, 500 mA Load Current, L = 330 μH VOUT = 5V, 100 mA Load Current, L = 100 μH Notes: Notes: A: Output Pin Voltage, 10V/div A: Output Pin Voltage, 10V/div B: Inductor Current, 0.2 A/div B: Inductor Current, 0.2 A/div C: Output Ripple Voltage, 20 mV/div, C: Output Ripple Voltage, 20 mV/div, AC-Coupled AC-Coupled Horizontal Time Base: 5 μs/div Horizontal Time Base: 5 μs/div Figure 18. Figure 19. 500 mA Load Transient Response for Continuous 250 mA Load Transient Response for Discontinuous Mode Operation. L = 330 μH, COUT = 300 μF Mode Operation. L = 68 μH, COUT = 470 μF Notes: Notes: A: Output Voltage, 50 mV/div. A: Output Voltage, 50 mV/div. AC Coupled AC Coupled B: 100 mA to 500 mA Load Pulse B: 50 mA to 250 mA Load Pulse Horizontal Time Base: 200 μs/div Horizontal Time Base: 200 μs/div Figure 20. Figure 21. 10 Submit Documentation Feedback Copyright © 1999–2013, Texas Instruments Incorporated Product Folder Links: LM2574 LM2574HV |
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