ISL8088 Ver la hoja de datos (PDF) - Intersil
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ISL8088 Datasheet PDF : 18 Pages
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ISL8088
Typical Operating Performance (Unless otherwise noted) operating conditions are:
TA = +25°C, VIN = 2.75V to 5.5V, EN = VIN, L1 = L2 = 2.2µH, C1 = 10µF, C2 = C4 = 10µF, VOUT1 = 2.5V, VOUT2 = 1.8V,
IOUT1 = IOUT2 = 0A to 800mA. (Continued)
1.56
1.55
1.54
1.53
5 VIN PFM MODE
3.3V VIN PFM
1.84
1.83
1.82
1.81
5 VIN PFM MODE
3.3V VIN PFM
5VIN PWM MODE
1.52
1.51
3.3V VIN PWM
5VIN PWM MODE
1.50
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
OUTPUT LOAD (A)
FIGURE 7. VOUT REGULATION vs LOAD 2.25MHz
1.5VOUT
1.80
1.79
3.3V VIN PWM
1.78
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
OUTPUT LOAD (A)
FIGURE 8. VOUT REGULATION vs LOAD 2.25MHz
1.8VOUT
2.55
2.54
2.53
2.52
2.51
5V VIN PFM
3.3V VIN PFM
3.3V VIN PWM
5V VIN PWM
2.50
2.49
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
OUTPUT LOAD (A)
FIGURE 9. VOUT REGULATION vs LOAD 2.25MHz
2.5VOUT
3.42
3.40
3.38
3.36
3.34
5V VIN PFM
5V VIN PWM
3.32
3.30
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
OUTPUT LOAD (A)
FIGURE 10. VOUT REGULATION vs LOAD 2.25MHz
3.3VOUT
1.83
1.82
1.81
0A LOAD PWM
1.80
1.79
1.78
0.8A LOAD PWM
0.4A LOAD PWM
1.77
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
INPUT VOLTAGE (V)
FIGURE 11. OUTPUT VOLTAGE REGULATION vs VIN
1.8VOUT PWM MODE
1.83
1.82
1.81
0A LOAD
0.4A LOAD
1.80
1.79
1.78
0.8A LOAD
1.77
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
INPUT VOLTAGE (V)
FIGURE 12. OUTPUT VOLTAGE REGULATION vs VIN
1.8VOUT PFM MODE
7
FN6858.1
April 29, 2010
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