ISL8009A 查看數據表（PDF） - Intersil
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ISL8009A Datasheet PDF : 13 Pages
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ISL8009A
Typical Operating Performance (Unless otherwise noted, operating conditions are: TA = +25°C,
VVIN = 5V, EN = VIN, RSI = SKIP = 0V, L = 2.2µH, C1 = 20µF,
C2 = 20µF, IOUT = 0A)
100
100
90
80
70
1.5VOUT - PWM
2.5VOUT - PWM
60
50
1.8VOUT - PWM
40
1.2VOUT - PWM
30
90
80
1.5VOUT - PFM
2.5VOUT - PFM
70
1.8VOUT - PFM
60 1.2VOUT - PFM
20
50
10
0
0.00
0.25
0.50
0.75
1.00
1.25
1.50
OUTPUT LOAD (A)
FIGURE 1. EFFICIENCY vs LOAD, VIN = 3.3V PWM
40
0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50
OUTPUT LOAD (A)
FIGURE 2. EFFICIENCY vs LOAD, VIN = 3.3V PFM
100
90
80
70
2.5VOUT - PWM
60
50
1.5VOUT - PWM
1.8VOUT - PWM
3.3VOUT - PWM
40
30 1.2VOUT - PWM
20
10
0
0.00
0.25
0.50
0.75
1.00
1.25
1.50
OUTPUT LOAD (A)
FIGURE 3. EFFICIENCY vs LOAD, VIN = 5V PWM
100
90
80
2.5VOUT - PFM
70
1.5VOUT - PFM
60
1.2VOUT - PFM
50
1.8VOUT - PFM
3.3VOUT - PFM
40
0.05
0.15
0.25 0.35 0.45 0.55
OUTPUT LOAD (A)
0.65
0.75
FIGURE 4. EFFICIENCY vs LOAD, VIN = 5V PFM
1.24
1.23
2.8VIN - PWM
5VIN - PWM 5VIN - PFM
1.22
1.21
1.20
1.19
1.18
3.3VIN - PWM 2.8VIN - PFM
3.3VIN-PFM
1.17
1.16
0.00
0.25
0.50 0.75 1.00
OUTPUT LOAD (A)
1.25 1.50
FIGURE 5. VOUT REGULATION vs LOAD, VOUT = 1.2V
1.54
1.53
1.52 2.8VIN - PWM 5VIN - PWM 5VIN - PFM
1.51
1.50
1.49
1.48
3.3VIN - PWM 2.8VIN - PFM
3.3VIN-PFM
1.47
1.46
0.00
0.25
0.50 0.75 1.00
OUTPUT LOAD (A)
1.25
1.50
FIGURE 6. VOUT REGULATION vs LOAD, VOUT = 1.5V
5
FN6656.2
November 19, 2009
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