ISL8033 查看數據表（PDF） - Intersil
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ISL8033 Datasheet PDF : 18 Pages
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ISL8033, ISL8033A
Typical Operating Performance ISL8033A
Unless otherwise noted, operating conditions are: TA = +25°C, VIN = 5V, EN = VIN, L1 = 0.68µH, L2 = 1µH, C1 = C2 = C4 = 2x22µF, VOUT1 = 1.2V, VOUT2 =
1.8V, IOUT1 = IOUT2 = 0A to 3A.
100
100
2.5VOUT
2.5VOUT
3.3VOUT
90
90
80
70
1.2VOUT
1.5VOUT
1.8VOUT
80
70
1.2VOUT 1.5VOUT 1.8VOUT
60
60
50
50
40
0.0
0.5
1.0
1.5
2.0
OUTPUT LOAD (A)
2.5
3.0
FIGURE 32. EFFICIENCY vs LOAD, 1MHz 3.3VIN DUAL CH1 +25°C
40
0.0
0.5
1.0
1.5
2.0
2.5
3.0
OUTPUT LOAD (A)
FIGURE 33. EFFICIENCY vs LOAD, 1MHz 5VIN, DUAL CH1 +25°C
LX1 2V/DIV
VOUT1 RIPPLE 20mV/DIV
LX2 2V/DIV
VOUT2 RIPPLE 20mV/DIV
IL1 0.2A/DIV
IL2 0.2A/DIV
FIGURE 34. STEADY STATE OPERATION AT NO LOAD CHANNEL 1
FIGURE 35. STEADY STATE OPERATION AT NO LOAD CHANNEL 2
LX1 2V/DIV
VOUT1 RIPPLE 20mV/DIV
IL1 0.2A/DIV
FIGURE 36. STEADY STATE OPERATION WITH FULL LOAD
CHANNEL 1
13
LX2 2V/DIV
VOUT2 RIPPLE 20mV/DIV
IL2 0.2A/DIV
FIGURE 37. STEADY STATE OPERATION WITH FULL LOAD
CHANNEL 2
FN6854.2
March 24, 2011
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