LT3992
应用信息
V
IN1
15V至60V
4.7F
V
IN1
SHDN1
BST1
0.47F
100F
×2
22H
SW1
IND1
V
OUT1
8.06k
24.9k
FB1
CMPI1
CMPO1
SS1
ILIM1
V
C1
0.1F
33pF
1000pF
60.4k
13k
10k
RT /同步
DIV
61.9k
LT3992
V
IN2
SHDN2
BST2
SW2
IND2
V
OUT2
FB2
CMPI2
CMPO2
SS2
ILIM2
V
C2
CLKOUT
T
J
I
LIM1
CLKOUT
400kHz
10nF
0.1F
33pF
3992 F15
4.7F
V
OUT1
22H
0.22F
V
OUT1
3.3V
1.5A
200kHz
PG1
100k
113k
8.06k
47F
100k
V
OUT2
12V
1.5A
400kHz
PG2
680pF
15k
GND
图15. 12V和3.3V双路降压型多频转换器
V
IN1
15V至60V
4.7F
V
OUT2
V
IN1
SHDN1
BST1
0.1F
22H
SW1
IND1
V
OUT1
V
IN2
SHDN2
BST2
SW2
2.2H
0.1F
V
OUT1
12V
1A
400kHz
PG
LT3992
IND2
V
OUT2
FB2
CMPI2
100k
10F
8.06k
113k
FB1
CMPI1
CMPO1
SS1
ILIM1
V
C1
24.9k
FB1
8.06k
V
OUT2
3.3V
2A
47μF 1600kHz
CMPO2
SS2
ILIM2
V
C2
CLKOUT
T
J
ILIM1
CLKOUT
1600kHz
10nF
33pF
470pF
16k
3992 F16
33pF
0.1F
60.4k
680pF
15k
48.7k
102k
RT /同步
DIV
GND
0.1F
图16. 12V和3.3V 2级多频降压转换器
3992f
24
