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LM2594 Datasheet(PDF) 7 Page - ON Semiconductor |
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LM2594 Datasheet(HTML) 7 Page - ON Semiconductor |
7 / 25 page LM2594 http://onsemi.com 7 0.4 A 0 0 A B C 100 ms/div 2 ms/div Figure 14. Switching Waveforms Figure 15. Load Transient Response Vout = 5 V A: Output Pin Voltage, 10 V/div B: Switch Current, 0.4 A/div C: Inductor Current, 0.4 A/div, AC−Coupled D: Output Ripple Voltage, 50 mV/div, AC−Coupled Horizontal Time Base: 2.0 ms/div 10 V 0 0.8 A 0.4 A 100 mV Output Voltage Change 0 0.5 A 0.1 A 0 0.8 A - 100 mV Load Current TYPICAL PERFORMANCE CHARACTERISTICS (Circuit of Figure 16) D Figure 16. Typical Test Circuit D1 1N5822 L1 100 mH Output 8 4 Feedback Cout 220 mF Cin 100 mF LM2594 7 5 6ON/OFF GND Vin Load Vout 5.0 V/0.5 A Adjustable Output Voltage Versions Vout + Vref 1.0 ) R2 R1 R2 + R1 Vout V ref 1.0 Where Vref = 1.23 V, R1 between 1.0 k and 5.0 k R2 R1 8.5 V - 40 V Unregulated DC Input CFF |
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