ISL8033 查看數據表（PDF） - Intersil
零件编号
产品描述 (功能)
比赛名单
ISL8033 Datasheet PDF : 18 Pages
| |||
ISL8033, ISL8033A
Typical Application Circuit
INPUT 2.85V TO 6V
C1
2x22µF
VIN1, 2
LX1
VDD
ISET
EN1
ISL8033
PGND
FB1
PG1
SYNC
EN2
PG2
SGND
LX2
PGND
FB2
SGND
L1
1.5µH
C2
2x22µF
R2
124k
OUTPUT1
1.8V/3A
C3
12pF
R3
100k
L2
1.5µH
C4
2x22µF
R5
124k
OUTPUT2
1.8V/3A
C5
12pF
R6
100k
FIGURE 2. TYPICAL APPLICATION DIAGRAM - DUAL INDEPENDENT OUTPUTS
VOUT
C1
C2 (or C4)
C3 (or C5)
L1 (or L2)
R2 (or R5)
R3 (or R6)
0.8V
2x22µF
2x22µF
12pF
1.0µH~2.2µH
0
100k
TABLE 1. ISL8033 COMPONENT VALUE SELECTION
1.2V
1.5V
1.8V
2x22µF
2x22µF
2x22µF
2x22µF
2x22µF
2x22µF
12pF
12pF
12pF
1.0µH~2.2µH
1.0µH~2.2µH
1.0µH~3.3µH
50k
87.5k
124k
100k
100k
100k
2.5V
2x22µF
2x22µF
12pF
1.0µH~3.3µH
212.5k
100k
3.3V
2x22µF
2x22µF
12pF
1.0µH~4.7µH
312.5k
100k
TABLE 2. ISL8033A COMPONENT VALUE SELECTION
VOUT
C1
0.8V
2x22µF
1.2V
2x22µF
1.5V
2x22µF
1.8V
2x22µF
2.5V
2x22µF
3.3V
2x22µF
C2 (or C4)
2x22µF
2x22µF
2x22µF
2x22µF
2x22µF
2x22µF
C3 (or C5)
12pF
12pF
12pF
12pF
12pF
12pF
L1 (or L2)
0.47~1.5µH
0.47~1.5µH
0.47~1.5µH
0.47~1.5µH
1.0~2.2µH
1.0~3.3µH
R2 (or R5)
0
50k
87.5k
124k
212.5k
312.5k
R3 (or R6)
100k
100k
100k
100k
100k
100k
NOTE: The minimum output capacitor value is given for different output voltage to make sure the whole converter system is stable. Output capacitance
should increase to support faster load transient requirement.
PART NUMBER
ISL8033
ISL8033A
TABLE 3. SUMMARY OF DIFFERENCES
SWITCHING FREQUENCY
Internally fixed switching frequency FSW = 1MHz
Internally fixed switching frequency FSW = 2.5MHz
2
FN6854.2
March 24, 2011
Share Link: 