ISL8540 查看數據表（PDF） - Intersil
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ISL8540 Datasheet PDF : 16 Pages
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ISL8540
Typical Performance Curves Circuit of Figure 2, VIN = 24V, EN = 0V, FS = 500KHz, VOUT = 5V, unless otherwise noted.
Typical values are at TA = +25°C. (Continued)
24.4
3.4
24.3
36V VIN
3.4
24.2
3.3
2A LOAD
NO LOAD
24.1
3.3
1A LOAD
24.0
3.3
23.9
3.2
23.8
0.0
0.5
1.0
1.5
2.0
OUTPUT LOAD (A)
FIGURE 10. VOUT REGULATION vs LOAD
(VOUT = 24V - 500kHz)
3.2 5
10
15
20
25
30
35
40
INPUT VOLTAGE (V)
FIGURE 11. OUTPUT VOLTAGE REGULATION vs VIN PWM
MODE
5.10
5.05
5.00
4.95
4.90
IOUT = 0A
IOUT = 1A
IOUT = 2A
4.85
4.80 5
10
15
20
25
30
35
40
INPUT VOLTAGE (V)
FIGURE 12. OUTPUT VOLTAGE REGULATION vs VIN
(VOUT = 5V - 500kHz)
12.3
12.2
12.1
12.0
11.9
IOUT = 0A
IOUT = 1A
IOUT = 2A
11.8
11.7
5
10
15
20
25
30
35
40
INPUT VOLTAGE (V)
FIGURE 13. OUTPUT VOLTAGE REGULATION vs VIN
(VOUT = 5V - 500kHz)
24.75
24.50
24.25
IOUT = 0A
IOUT = 1A
24.00
23.75
23.50
23.25
5
IOUT = 2A
10
15
20
25
30
35
40
INPUT VOLTAGE (V)
FIGURE 14. OUTPUT VOLTAGE REGULATION vs VIN
(VOUT = 5V - 500kHz)
3.0
2.5
36V VIN
2.0
1.5
1.0
24V VIN
0.5
12V VIN
0.0
0.0
0.5
1.0
1.5
2.0
OUTPUT LOAD (A)
FIGURE 15. POWER DISSIPATION vs LOAD
(VOUT = 3.3V - 500kHz)
8
FN6495.5
September 9, 2008
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