ISL85415(2014) Просмотр технического описания (PDF) - Renesas Electronics
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ISL85415 Datasheet PDF : 24 Pages
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ISL85415
Typical Application Schematics
CBOOT
100nF
COUT
10µF
VOUT
L1
22µH
CVIN
10µF
1 SS
2
SYNC
3 BOOT
4 VIN
5 PHASE
6
PGND
GND
FS 12
11
COMP
10
FB
R2
CFB
9
VCC
PG
R3
CVCC
1µF
EN
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
VCC
PG
EN
R3
CVCC
1µF
RCOMP
CCOMP
VOUT
L1
(V)
(µH)
12
45
5
22
3.3
22
2.5
22
1.8
22
COUT
(µF)
10
2 x 22
2 x 22
2 x 22
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
FN8373 Rev 4.00
October 30, 2014
Page 4 of 24
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