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ADP1621-EVAL Scheda tecnica(PDF) 8 Page - Analog Devices |
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ADP1621-EVAL Scheda tecnica(HTML) 8 Page - Analog Devices |
8 / 32 page ADP1621 Rev. A | Page 8 of 32 TYPICAL PERFORMANCE CHARACTERISTICS 100 30 0.01 10 LOAD CURRENT (A) 90 80 70 60 50 40 0.1 1 TA = 25°C fSW = 220kHz VIN = 3.3V VOUT = 5V Figure 5. Efficiency vs. Load Current CH1 20mV CH2 2V M2µs A CH2 2.6V 1 2 TA = 25°C VIN = 3.3V VOUT = 5V LOAD = 1A VOUT RIPPLES @ 5V AC-COUPLED CH2 = GATE Figure 6. Output Voltage Ripple of the Circuit Shown in Figure 1 1.21605 1.21575 2.5 6.0 VIN (V) TA =25°C 1.21600 1.21595 1.21590 1.21585 1.21580 3.0 3.5 4.0 4.5 5.0 5.5 Figure 7. VFB vs. VIN 92 84 100 SWITCHING FREQUENCY (kHz) 91 90 89 88 87 86 85 300 500 700 900 1100 1300 1500 TA = 25°C VIN = 3.3V VOUT = 5V LOAD = 1A LOAD = 0.5A Figure 8. Efficiency vs. Switching Frequency 100 0.00001 07 SUPPLY VOLTAGE (V) TA = 25°C NO SWITCHING 10 1 0.1 0.01 0.001 0.0001 12 34 5 6 IIN IPIN Figure 9. Supply Current vs. Supply Voltage 2.5 0 1.17 1.29 VFB (V) TA = 25°C VIN = 5V 2.0 1.5 1.0 0.5 1.19 1.21 1.23 1.25 1.27 Figure 10. VCOMP vs. VFB |
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