ISL97652 Просмотр технического описания (PDF) - Intersil
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ISL97652 Datasheet PDF : 25 Pages
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ISL97652
Typical Performance Curves (Continued)
CH3 = IOUT
CH4 = AVDD (AC COUPLED)
FIGURE 7. BOOST TRANSIENT RESPONSE @ 1.3MHz
100
90
80
70
60
50
40
30
20
10
0
0
8V VIN TO 3.3V VOUT
12V VIN TO 3.3V VOUT 13V VIN TO 3.3V VOUT
500
1000
1500
IOUT (mA)
FIGURE 8. BUCK EFFICIENCY @ 650kHz
2000
90
85
80
75
12V VIN TO 3.3V VOUT
8V VIN TO 3.3V VOUT
70
65
60
55
13V VIN TO 3.3V VOUT
50
0
500
1000
1500
2000
2500
IOUT (mA)
FIGURE 9. BUCK EFFICIENCY @ 1.3MHz
0
-0.05
8V VIN TO 3.3V VOUT
-0.1
-0.15
-0.2
-0.25
12V VIN TO 3.3V VOUT
-0.3
13V VIN TO 3.3V VOUT
-0.35
0
500
1000
1500
2000
2500
IOUT (mA)
FIGURE 10. BUCK LOAD REGULATION @ 650kHz
0
-0.05
-0.1
8V VIN TO 3.3V VOUT
-0.15
-0.2
-0.25
12V VIN TO 3.3V VOUT
-0.3
-0.35
13V VIN TO 3.3V VOUT
-0.4
0
500
1000
1500
2000
2500
IOUT (mA)
FIGURE 11. BUCK LOAD REGULATION @ 1.3MHz
CH3 = IOUT
CH4 = VLOGIC (AC COUPLED)
FIGURE 12. BUCK TRANSIENT RESPONSE @ 650kHz
7
FN9287.1
November 2, 2007
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