LTC3828
应用S我FOR ATIO
0.1F
33pF
1
1000pF
15k
2
TRCKSS1
I
TH1
CLKOUT
28
R1
R2
20k 1% 17.4k 1%
27
PGOOD
LTC3828EG
3
26
BOOST1
SENSE1
+
4
5
SENSE1
–
V
OSENSE1
PLLFLTR
RUN1
FCB / PLLIN
SGND
TRCKSS2
SENSE2
–
SENSE2
+
I
TH2
V
OSENSE2
TG1
SW1
V
IN
INTV
CC
保护地
BG1
BG2
SW2
TG2
BOOST2
RUN2
25
24
23
22
21
20
19
18
17
16
15
L2
1H
R
SENSE2
6m
D2
C
INTVCC
4.7F
1F
陶瓷的
C
OUT2
4V 220μF
1F
R
IN
10
C
VIN
0.1F
C
IN
16V 22μF
C
OUT1
330μF 2.5V
C
B1
0.22F
M1
1F
陶瓷的
M2
D1
180pF
6
7
8
9
500kHz
鳍
30k
26.1k
10
11
33pF
1000pF
12
4.7k
13
14
R3
R4
20k 1% 63.4k 1%
180pF
图15. LTC3828高效率，低噪声1.5V / 7A ，
3.3V / 7A ， 500kHz的稳压器，具有比例跟踪
30
U
10
2nF
R
PU
10
V
PULL -UP
<5.5V
PGOOD
L1
0.68H
R
SENSE1
6m
V
OUT1
1.5V
7A
V
IN
12V
C
B2
0.22F
M3
M4
10
2nF
10
3828 F14
W
U U
V
OUT2
3.3V
7A
3828f
