Datasheet

19
LTC1530
1530fa
LTC1530 3.3V to 1.8V, 14A Application
+
+
+
+
0.1µF
0.22µF
0.22µF
10µF
10µF
3.3µF
+
C
OUT
1500µF
× 4
C
IN
1500µF
× 3
L1
2.5µH
20Ω
R1
576Ω
1%
R2
1.24k
1%
2.4k
PV
CC
PV
CC
GND
LTC1530-ADJ
LTC1517-5
G1
1
5
3
2
C1
+
C1
–
4
5
1
2
4
8
6
7
3
COMP
I
FB
I
MAX
G2
V
SENSE
V
OUT
GND
V
IN
1530 TA03
V
IN
3.3V
L1 = PANASONIC ETQP6F2R5HA PCC-N6
C
IN
= 3× SANYO 6MV1500GX
C
OUT
= 4× SANYO 6MV1500GX
R
C
13k
C
C
0.022µF
Q2
SUD50N03
Q1
SUD50N03
C1
100pF
V
OUT
1.8V
14A
D1
MBRS120
D2
MBRS120
Other Methods to Generate PV
CC
Supply from 3.3V Input
1µF
PV
CC
12V
+
68µF
20V
+
47µF
L1*
33µH
30Ω
V
IN
GNDSW2
LT1107-12
21
4
5
8
3
SW1
I
LIM
SENSE
1530 TA04
V
IN
3.3V
* SUMIDA CD54-330K OR
COILCRAFT DT3316-473
** SUMIDA CD43-100
D1
MBRS120T3
1µF
PV
CC
10V
+
10µF
20V
+
3.3µF
100pF
3000pF
L1**
10µH
SHDN
V
IN
GND
V
C
LT1317
36
1
4
2
5
SW
FB
V
IN
3.3V
D1
MBR0520
33k
300k
2.2M
TYPICAL APPLICATIO S
U