ISL85415 查看數據表（PDF） - Intersil
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ISL85415 Datasheet PDF : 24 Pages
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ISL85415
Typical Application Schematics
CBOOT
100nF
VOUT
COUT
10µF
L1
22µH
CVIN
10µF
1 SS
2
SYNC
3 BOOT
4 VIN
5 PHASE
6
PGND
GND
FS 12
11
COMP
10
FB
9
VCC
PG
EN
R2
R3
CVCC
1µF
CFB
FIGURE 3. INTERNAL DEFAULT PARAMETER SELECTION
CSS
CBOOT
100nF
VOUT
COUT
10µF
L1
22µH
CVIN
10µF
1
SS
2
SYNC
3 BOOT
4 VIN
5 PHASE
6
PGND
GND
12
FS
11
COMP
10
FB
9
VCC
PG
EN
RFS
R2
R3
CVCC
1µF
RCOMP
CCOMP
CFB
VOUT
L1
(V)
(µH)
12
45
5
22
3.3
22
2.5
22
1.8
22
COUT
(µF)
10
2x22
2x22
2x22
22
FIGURE 4. USER PROGRAMMABLE PARAMETER SELECTION
TABLE 1. EXTERNAL COMPONENT SELECTION
R2
R3
CFB
RFS
(kΩ)
(kΩ)
(pF)
(kΩ)
90.9
4.75
22
115
90.9
12.4
100
120
90.9
20
100
120
90.9
28.7
100
120
100
50
22
120
RCOMP
(kΩ)
100
100
100
100
50
CCOMP
(pF)
470
470
470
470
470
4
FN8373.2
September 26, 2013
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