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FAN5350 데이터시트(PDF) 10 Page - Fairchild Semiconductor |
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FAN5350 데이터시트(HTML) 10 Page - Fairchild Semiconductor |
10 / 15 page © 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN5350 Rev. 1.0.3 10 Typical Performance Characteristics (Continued) VIN = 3.6V, TA = 25°C, VEN = VIN, according to the circuit in Figure 1 or Figure 2, unless otherwise specified. 60 65 70 75 80 85 90 95 100 0.001 0.010 0.100 1.000 V IN=2.5V VIN=2.7V V IN=3.3V V IN=3.6V V IN=4.2V V IN=5V V IN=5.5V Load Current (A) 100 95 90 85 80 75 0.001 0.010 0.100 1.000 Load Current (A) +85°C +25°C -40°C Figure 14. Power Efficiency vs. Load Current Figure 15. Power Efficiency Over Temperature Range 1.3 1.2 1.1 1.0 0.9 0.8 0.7 -40 -20 0 20 406080 Ambient Temperature (°C) VIN=5.5V VIN=2.7V VIN=3.6V 0 50 100 150 200 250 2.5 3.0 3.5 4.0 4.5 5.0 5.5 Battery Voltage (V) +85°C +25°C -40°C Figure 16. PMOS Current Limit in Closed Loop Figure 17. Shutdown Supply Current vs. Battery Voltage 85dB 5dB /div 35dB 250mA Load 1Hz 10Hz 100Hz 1kHz 10kHz 2.7 2.8 2.9 3.0 3.1 3.2 3.3 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5 Battery Voltage (V) -40°C +85°C +25°C Figure 18. Power Supply Rejection Ratio in CCM Figure 19. Switching Frequency in CCM |
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