ISL8022 查看數據表（PDF） - Intersil
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ISL8022 Datasheet PDF : 18 Pages
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ISL8022
Typical Operating Performance (Unless otherwise noted) operating conditions are:
TA = +25°C, VVIN = 2.8V to 5.5V, EN = VIN, L1 = L2 = 1.2µH, C1 = 10µF, C2 = C4 = 22µF, IOUT1 = 0A to 2A,
IOUT2 = 0A to 1.7A.
100
100
3.3VOUT2
90
90
80
1.8VOUT2
70 2.5VOUT1
1.5VOUT2
60
1.2VOUT1
80
1.8VOUT2
70
2.5VOUT1
1.5VOUT1
60
1.2VOUT1
50
50
40
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
OUTPUT LOAD (A)
FIGURE 2. EFFICIENCY vs LOAD, 2.25MHz, 3.3VIN PWM
40
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
OUTPUT LOAD (A)
FIGURE 3. EFFICIENCY vs LOAD, 2.25MHz, 5VIN PWM
100
90
80
2.5VOUT1
70
1.8VOUT2
1.5VOUT1
60
1.2VOUT1
50
40
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
OUTPUT LOAD (A)
FIGURE 4. EFFICIENCY vs LOAD, 2.25MHz, 3.3VIN PFM
100
90
3.3VOUT2
80
1.8VOUT2
2.5VOUT1
70
1.5VOUT1
1.2VOUT1
60
50
40
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
OUTPUT LOAD (A)
FIGURE 5. EFFICIENCY vs LOAD, 2.25MHz, 5VIN PFM
0.90
0.75
0.60
3.3VIN PWM
0.45
0.30
5 VIN PWM
0.15
3.3VIN PFM
5VIN PFM
0.00
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
OUTPUT LOAD (A)
FIGURE 6. POWER DISSIPATION vs LOAD, 2.25MHz,
1.8V, CHANNEL 2
1.23
1.22
1.21
1.20
5 VIN PFM
3.3V VIN PFM
1.19
1.18
5VIN PWM
3.3V VIN PWM
1.17
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
OUTPUT LOAD (A)
FIGURE 7. VOUT REGULATION vs LOAD, 2.25MHz,
1.2V, CHANNEL1
7
FN7650.1
August 25, 2010
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