Datasheet

LTC3633A-2/LTC3633A-3
24
3633a23f
TYPICAL APPLICATIONS
1.2V/1.8V Buck Regulator with Coincident Tracking and 6V Input UVLO
Dual Output Regulator From Multiple Input Supplies
RUN1
RUN2
RT
LTC3633A-2
BOOST2
3633a23 TA04
0.1µF
L2
0.47µH
R4
10k
R3
10k
SW2
V
ON2
PV
IN2
PV
IN1
SV
IN
V
FB2
BOOST1
SW1
V
ON1
V
FB1
C
OUT2
68µF
V
OUT2
1.2V AT 3A
0.1µF
L1
0.68µH
R6
4.99k
R1
10k
C
OUT1
47µF
V
OUT1
1.8V AT 3A
V
IN
6V TO 20V
C1
47µF
×2
R5
196k
R7
154k
R8
40k
TRACKSS2
R2
15k
MODE/SYNC
ITH1
ITH2
INTV
CC
C2
2.2µF
PHMODE
PGNDSGND
RUN2 RUN1
RT
LTC3633A-2
BOOST2
3633a23 TA05
0.1µF
L2
1µH
R4
54.9k
R3
12.1k
SW2
V
ON2
PV
IN2
PV
IN1
SV
IN
V
FB2
BOOST1
SW1
V
ON1
V
FB1
C
OUT2
22µF
V
OUT2
3.3V AT 3A
0.1µF
L1
0.68µH
R1
12.1k
C
OUT1
47µF
V
OUT1
1.8V AT 3A
12V
(POWERS V
OUT2
)
5V
(POWERS V
OUT1
)
47µF 47µF
R5
162k
787k
100k
R2
24.3k
MODE/SYNC
ITH1
ITH2
INTV
CC
C2
2.2µF
1µF
PHMODE
274k
100k
PGNDSGND