Datasheet

LTC3603
18
3603fc
For more information www.linear.com/LTC3603
typical applications
3.3V, 2.5A Regulator, Synchronized to 1.8MHz, Small Size
C
IN
22µF
V
IN
12V
V
OUT
2.5V
2.5A
3603 TA05
D1
L1
1µH
R
OSC
69.8k
R
ITH
2.94k
R1
105k
R
PG
200k
C
VCC
1µF
C
ITH
470pF
SYNC/MODE
PGOOD
RT
ITH
V
FB
RUN
TRACK/SS
PGND
INTV
CC
PV
IN
PV
IN
BOOST
SW
SW
SW
PGND
PGND
LTC3603
R2
332k
C
FB
10pF
C
OUT
47µF
C
BST
0.22µF
PGOOD
1.8MHz
EXT. CLK
L1: VISHAY IHLP2525CZER1ROMO1
C
IN
: TAIYO YUDEN TMK325BJ226MM-T
C
OUT
: MURATA GRM31CR60J476ME19
Efficiency vs Load Current,
1.8V Regulator at 1MHz, Burst Mode Operation
LOAD CURRENT (A)
70
EFFICIENCY (%)
80
85
95
100
0.001 0.1 1 10
3603 TA04a
60
0.01
90
75
65
V
IN
= 7.2V
V
IN
= 12V
Efficiency vs Load Current,
1.2V Regulator at 750kHz, Burst Mode Operation
LOAD CURRENT (A)
65
EFFICIENCY (%)
95
100
60
55
90
75
85
80
70
0.001 0.1 1 10
3603 TA04b
50
0.01
V
IN
= 7.2V
V
IN
= 12V