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LM2597M-12 데이터시트(PDF) 7 Page - National Semiconductor (TI) |
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LM2597M-12 데이터시트(HTML) 7 Page - National Semiconductor (TI) |
7 / 34 page Typical Performance Characteristics (Continued) V IN and VBS Current vs V BS and Temperature DS012440-17 Soft-start Response DS012440-18 Shutdown /Soft-start Threshold Voltage DS012440-25 Continuous Mode Switching Waveforms V IN = 20V, VOUT =5V, ILOAD = 400 mA L = 100 µH, C OUT = 120 µF, COUT ESR = 140 mΩ DS012440-19 A: Output Pin Voltage, 10V/div. B: Inductor Current 0.2A/div. C: Output Ripple Voltage, 20 mV/div. Horizontal Time Base: 2 µs/div. Discontinuous Mode Switching Waveforms V IN = 20V, VOUT =5V, ILOAD = 200 mA L = 33 µH, C OUT = 220 µF, COUT ESR=60 mΩ DS012440-20 A: Output Pin Voltage, 10V/div. B: Inductor Current 0.2A/div. C: Output Ripple Voltage, 20 mV/div. Horizontal Time Base: 2 µs/div. Load Transient Response for Continuous Mode V IN = 20V, VOUT =5V, ILOAD = 200 mA to 500 mA L = 100 µH, C OUT = 120 µF, COUT ESR = 140 mΩ DS012440-21 A: Output Voltage, 50 mV/div. (AC) B: 200 mA to 500 mA Load Pulse Horizontal Time Base: 50 µs/div. Load Transient Response for Discontinuous Mode V IN = 20V, VOUT =5V, ILOAD = 100 mA to 200 mA L = 33 µH, C OUT = 220 µF, COUT ESR=60 mΩ DS012440-22 A: Output Voltage, 50 mV/div. (AC) B: 100 mA to 200 mA Load Pulse Horizontal Time Base: 200 µs/div. www.national.com 7 |
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