FAN5350 데이터 시트보기 (PDF) - Fairchild Semiconductor
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FAN5350 Datasheet PDF : 15 Pages
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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.
100
95
90
85
80
75
70
65
60
0.001
0.010
0.100
Load Current (A)
VIN=2.5V
VIN=2.7V
1.000
VIN=3.3V
VIN=3.6V
VIN=4.2V
VIN=5V
VIN=5.5V
100
95
90
85
80
75
0.001
-40°C
+85°C
+25°C
0.010
0.100
Load Current (A)
1.000
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
VIN=5.5V
VIN=3.6V
VIN=2.7V
-20
0
20
40
60
80
Ambient Temperature (°C)
Figure 16. PMOS Current Limit in Closed Loop
250
200
150
+85°C
100
50
0
2.5
3.0
+25°C
3.5
4.0
4.5
Battery Voltage (V)
-40°C
5.0
5.5
Figure 17. Shutdown Supply Current vs.
Battery Voltage
85dB
5dB
/div
35dB
1Hz
10Hz
250mA Load
100Hz
1kHz
10kHz
3.3
3.2
-40°C
3.1
+25°C
3.0
+85°C
2.9
2.8
2.7
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)
Figure 18. Power Supply Rejection Ratio in CCM
Figure 19. Switching Frequency in CCM
© 2007 Fairchild Semiconductor Corporation
FAN5350 Rev. 1.0.3
10
www.fairchildsemi.com
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