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LM2574N-12 数据表(PDF) 6 Page - ON Semiconductor |
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LM2574N-12 数据表(HTML) 6 Page - ON Semiconductor |
6 / 26 page LM2574, NCV2574 http://onsemi.com 6 A B C 5 ms/DIV TJ, JUNCTION TEMPERATURE (°C) SWITCH CURRENT (A) 5 ms/DIV TJ, JUNCTION TEMPERATURE (°C) Figure 8. Oscillator Frequency TJ, JUNCTION TEMPERATURE (°C) Figure 9. Switch Saturation Voltage Figure 10. Minimum Operating Voltage Figure 11. Feedback Pin Current Figure 12. Continuous Mode Switching Waveforms Vout = 5.0 V, 500 mA Load Current, L = 330 mH Figure 13. Discontinuous Mode Switching Waveforms Vout = 5.0 V, 100 mA Load Current, L = 100 mH Vin = 1.23 V ILoad = 100 mA Adjustable Version Only Vin = 12 V Normalized at 25 °C Adjustable Version Only A B C A: Output Pin Voltage, 10 V/DIV. B: Inductor Current, 0.2 A/DIV. C: Output Ripple Voltage, 20 mV/DIV, AC−Coupled A: Output Pin Voltage, 10 V/DIV. B: Inductor Current, 0.2 A/DIV. C: Output Ripple Voltage, 20 mV/DIV, AC−Coupled TYPICAL PERFORMANCE CHARACTERISTICS (Circuit of Figure 16) (continued) 8.0 6.0 4.0 2.0 0 −2.0 −4.0 −6.0 −8.0 10 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 100 80 60 40 20 0 −20 −40 −60 −80 −100 125 100 75 50 25 0 −25 −50 0 0.1 0.2 0.3 0.4 0.5 125 100 75 50 25 0 −25 −50 125 100 75 50 25 0 −25 −50 20 V 10 V 0 0.6 A 0.4 A 0.2 A 0 20 mV AC 20 V 10 V 0 0.4 A 0.2 A 0 20 mV AC −40 °C 25 °C 125 °C |
类似零件编号 - LM2574N-12 |
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类似说明 - LM2574N-12 |
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