ISL8025 Ver la hoja de datos (PDF) - Intersil
Número de pieza
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Lista de partido
ISL8025 Datasheet PDF : 21 Pages
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ISL8025, ISL8025A
Typical Operating Performance Unless otherwise noted, operating conditions are: TA = +25°C, VVIN = 5V,
EN = VIN, SYNC = VIN, L = 1.0µH, C1 = 22µF, C2 = 2 x 22µF, IOUT = 0A to 5A. (Continued)
100
100
90
90
80
80
70
3.3VOUT
60
2.5VOUT
1.8VOUT
50
1.5VOUT
1.2VOUT
0.9VOUT
40
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
OUTPUT LOAD (A)
FIGURE 10. EFFICIENCY vs LOAD (2MHz 5VIN PWM)
70
3.3VOUT
60
2.5VOUT
1.8VOUT
1.5VOUT
50
1.2VOUT
0.9VOUT
40
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
OUTPUT LOAD (A)
FIGURE 11. EFFICIENCY vs LOAD (2MHz 5VIN PFM)
0.813
0.810
0.807
0.804
5VIN PFM
5VIN PWM
3.3VIN PWM
3.3VIN PFM
0.801
0.798
0.795
0.792
0.789
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
OUTPUT LOAD (A)
FIGURE 12. VOUT REGULATION vs LOAD (1MHz, VOUT = 0.8V)
0.906
0.903
0.900
0.897
5VIN PFM
5VIN PWM
3.3VIN PWM
3.3VIN PFM
0.894
0.891
0.888
0.885
0.882
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
OUTPUT LOAD (A)
FIGURE 13. VOUT REGULATION vs LOAD (1MHz, VOUT = 0.9V)
1.219
1.214
1.209
1.204
5VIN PFM
5VIN PWM
3.3VIN PWM
3.3VIN PFM
1.199
1.194
1.189
1.184
1.179
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
OUTPUT LOAD (A)
FIGURE 14. VOUT REGULATION vs LOAD (1MHz, VOUT = 1.2V)
1.515
1.510
1.505
1.500
5VIN PFM
5VIN PWM
3.3VIN PWM
3.3VIN PFM
1.495
1.490
1.485
1.480
1.475
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
OUTPUT LOAD (A)
FIGURE 15. VOUT REGULATION vs LOAD (1MHz, VOUT = 1.5V)
9
FN8357.0
February 20, 2013
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