ISL854102 查看數據表（PDF） - Intersil
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ISL854102 Datasheet PDF : 19 Pages
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ISL854102
Typical Application Schematics
1 SS
FS 12
2
SYNC
11
COMP
R2
CFB
CBOOT
100nF
COUT
10µF
VOUT
L1
22µH
CVIN
10µF
3 BOOT
4 VIN
5 PHASE
6
PGND
GND
10
FB
9
VCC
PG
EN
R3
CVCC
1µF
FIGURE 3. INTERNAL DEFAULT PARAMETER SELECTION
CSS
CBOOT
100nF
COUT
10µF
VOUT
L1
22µH
CVIN
10µF
1 SS
2
SYNC
3 BOOT
4 VIN
5 PHASE
6
PGND
GND
FS 12
RFS
11
COMP
10
FB
R2
CFB
9
R3
VCC
CVCC
1µF
PG
EN
RCOMP
CCOMP
FIGURE 4. USER PROGRAMMABLE PARAMETER SELECTION
VOUT
L1
(V)
(µH)
COUT
(µF)
12
22
2 x 22
5
22
47 + 22
3.3
22
47 + 22
2.5
22
47 + 22
1.8
12
47 + 22
NOTE:
1. Connect FS to VCC.
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4
TABLE 1. EXTERNAL COMPONENT SELECTION
R2
R3
CFB
RFS
(kΩ)
(kΩ)
(pF)
(kΩ)
90.9
4.75
22
115
90.9
12.4
27
DNP (Note 1)
90.9
20
27
DNP (Note 1)
90.9
28.7
27
DNP (Note 1)
90.9
45.5
27
DNP (Note 1)
RCOMP
(kΩ)
150
100
100
100
70
CCOMP
(pF)
470
470
470
470
470
FN8870.0
July 1, 2016
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