Datasheet

LTC3545/LTC3545-1
18
35451fb
TYPICAL APPLICATIONS
3-Channel Power Sequencing
Figure 5. LTC3545-1 Three PGOODs and Power Sequencing
3545 TA05
L1
1.5µH
R1
511k
C2
10µF
SW1
PGOOD1
RUN2
PGOOD2
SW2
PGND
P
VIN
SW3
GNDA
V
IN
RUN1
V
FB1
V
FB2
V
FB3
RUN3
PGOOD3
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
LTC3545-1
GND
17
R3
100k
R4
100k
R5
165k
R6
110k
R7
133k
R8
66.5k
R2
511k
V
IN
2.5V TO 5.5V
R9
511k
E3
V
OUT1
E2
PGOOD2
E9
PGOOD3
E1
PGOOD1
1.2V AT 0.8A
E4
GND
C3
10µF
E7
V
OUT2
1.5V AT 0.8A
E6
GND
C4
10µF
E5
V
OUT3
1.8V AT 0.8A
E8
GND
L2
1.5µH
L3
1.5µH
C1
4.7µF
C6
20pF
C5
10µF
C7
20pF
C8
20pF
400µs/DIV
V
OUT1
RUN1
V
OUT2
V
OUT3
PGOOD3
3545 TA06
T
A
= 25°C
V
IN
= 3.6V