ISL8540 View Datasheet(PDF) - Renesas Electronics
Part Name
Description
Manufacturer
ISL8540 Datasheet PDF : 17 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.
100
90
2.5V VOUT
80
3.3V VOUT
5V VOUT
100
12V VOUT
90
80
5V VOUT
70
70
60
60
50
1.8V VOUT
40
1.2V VOUT
50
40
2.5V VOUT
1.8V VOUT 1.2V VOUT
30
20
0.0
0.5
1.0
1.5
2.0
OUTPUT LOAD (A)
FIGURE 4. EFFICIENCY vs LOAD (12V INPUT - 500kHz)
30
3.3V VOUT
20
0.0
0.5
1.0
1.5
2.0
OUTPUT LOAD (A)
FIGURE 5. EFFICIENCY vs LOAD (24V INPUT - 500kHz)
100
24V VOUT
90
80
12V VOUT
70
60
50
2.5V VOUT
3.3V VOUT
1.8V VOUT
40
5V VOUT
30
20
0.0
0.5
1.0
1.5
2.0
OUTPUT LOAD (A)
FIGURE 6. EFFICIENCY vs LOAD (36V INPUT - 500kHz)
3.38
3.35
3.32
24V VIN
12V VIN
3.29
3.26
36V VIN
3.23
3.20
0.0
0.5
1.0
1.5
2.0
2.5
OUTPUT LOAD (A)
FIGURE 7. VOUT REGULATION vs LOAD
(VOUT = 3.3V - 500kHz)
5.10
5.05
5.00
4.95
12V VIN
24V VIN
4.90
4.85
36V VIN
4.80
0.0
0.5
1.0
1.5
2.0
2.5
OUTPUT LOAD (A)
FIGURE 8. VOUT REGULATION vs LOAD
(VOUT = 5V - 500kHz)
12.3
12.2
12.1
12.0
11.9
36V VIN
11.8
11.7
0.0
0.5
1.0
1.5
OUTPUT LOAD (A)
FIGURE 9. VOUT REGULATION vs LOAD
(VOUT = 12V - 500kHz)
24V VIN
2.0
2.5
FN6495 Rev 5.00
September 9, 2008
Page 7 of 17
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