FAN8303 View Datasheet(PDF) - Fairchild Semiconductor
Part Name
Description
Manufacturer
FAN8303 Datasheet PDF : 12 Pages
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Typical Performance Characteristics (Continued)
VIN = 12V, VOUT = 5V, L1 = 15μH, CIN = 10μF, COUT = 22μF, TA = +25oC, unless otherwise noted.
Δf=45kHz
CH1
CH2
CH1
CH2
CH4
CH1(VO) : 2V, 20µ/div.
CH2(VIN) : 4V, 20µs/div.
CH3(SW) : 6V, 20µs/div.
CH4(IL) : 2A, 20µs/div.
Figure 10. Hard-Short at Output (OCP)
CH4
CH1(VO) : 2V, 20µ/div.
CH2(VIN) : 4V, 20µs/div.
CH3(SW) : 6V, 20µs/div.
CH4(IL) : 2A, 20µs/div.
Figure 11. Overload at Output (OCP)
95
90
85
80
75
70
0
5.0Vo
3.3Vo
2.5Vo
1.8Vo
0.5
1
1.5
2
Load Current [A]
Figure 12. Efficiency Curve
1
0.5
0
-0.5
-1
-1.5
-40 -15 10
35
60
85
Temperature [℃]
Figure 13. Normalized Output Voltage vs.
Temperature
380
370
360
350
340
330
320
-40 -15 10
35
60
85
Temperature [℃]
4
3.5
3
2.5
2
0
20
40
60
80 100
Duty [%]
Figure 14. Oscillator Frequency vs. Temperature
Figure 15. Current Limited Level vs. Duty Ratio
© 2008 Fairchild Semiconductor Corporation
FAN8303 • Rev. 1.0.0
7
www.fairchildsemi.com
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