FAN8301 Fairchild Semiconductor, FAN8301 Datasheet - Page 7

• Manufacturer Part Number: FAN8301
• Manufacturer: Fairchild Semiconductor

© 2008 Fairchild Semiconductor Corporation
FAN8301 • Rev. 1.0.0
CH4
CH2
CH1
CH3
Typical Performance Characteristics
V
IN
Figure 14. Oscillator Frequency vs. Temperature
=12V, V
95
90
85
80
75
70
380
370
360
350
340
330
320
310
Figure 10. Hard Short at Output (OCP)
0
OUT
-40
=5V, L1=15μH, C
Figure 12. Efficiency Curve
-15
Temperature [ ]
0.5
Load Current [A]
10
1
IN
=10μF, C
35
CH1(VO) : 2V, 20µ/div.
CH2(VIN) : 4V, 20µs/div.
CH3(SW) : 6V, 20µs/div.
CH4(IL) : 2A, 20µs/div.
1.5
60
OUT
1.8V
3.3V
2.5V
5V
=22μF, T
O
O
O
O
85
2
(Continued)
A
=+25°C, unless otherwise noted.
7
CH1
CH2
CH3
CH4
Figure 13. Normalized Output Voltage vs. Temperature
Figure 15. Current Limited Level vs. Duty Ratio
-0.5
-1.5
0.5
3.5
2.5
-1
1
0
4
3
2
Figure 11. Overload at Output (OCP)
-40
0
-15
Temperature [°C]
20
Δf = 45kHz
10
40
Duty [%]
35
60
CH1(VO) : 2V, 20µ/div.
CH2(VIN) : 4V, 20µs/div.
CH3(SW) : 6V, 20µs/div.
CH4(IL) : 2A, 20µs/div.
60
80
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85
100