Datasheet

LTC3828
29
3828fc
APPLICATIONS INFORMATION
TRCKSS1
I
TH1
SENSE1
+
SENSE1
–
V
OSENSE1
PLLFLTR
RUN1
FCB/PLLIN
SGND
TRCKSS2
SENSE2
–
SENSE2
+
I
TH2
V
OSENSE2
CLKOUT
PGOOD
BOOST1
TG1
SW1
V
IN
INTV
CC
PGND
BG1
BG2
SW2
TG2
BOOST2
RUN2
LTC3828EG
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
C
B1
0.22µF
C
B2
0.22µF
C
INTVCC
4.7µF
C
VIN
0.1µF
C
IN
22µF 50V
R
IN
10
PGOOD
R
PU
V
PULL_UP
<5.5V
R
SENSE1
0.015
L1
4.7µH
R
SENSE2
0.01
L2
4.7µH
M1 M2
M3 M4
C
OUT2
180µF 4V
C
OUT1
150µF 6.3V
V
OUT2
3.3V
5A
V
OUT1
5V
3A
V
IN
7V TO 28V
D1
D2
R1
20k 1%
R2
105k 1%
R3
20k 1%
R4
63.4k 1%
3828 F14
33pF
33pF
180pF
180pF
1000pF
0.1µF
1000pF
15k
15k
158k30k
1mF
1µF
CERAMIC
1µF
CERAMIC
2nF
10
10
2nF
10
10
++
Figure 14. LTC3828 High Effi ciency Low Noise 5V/3A,
3.3V/5A, Regulator with Ratiometric Tracking