Datasheet

21
LTC1625
TYPICAL APPLICATIONS
U
3.3V/4A Fixed Output with 12V/120mA Auxiliary Output
+
C
SS
0.1µF
R
C
10k
C
C1
470pF
C
C2
220pF
M2
IRLR3103
C
IN
: SANYO 30SC10M
C
OUT
: AVX TPSD107M010R0065
C
SEC
: AVX TAJB335M035R
T1: BH ELECTRONICS 510-1079
*YES! USE A STANDARD RECOVERY DIODE
D1
MBRS140T3
M1
IRLR3103
C
VCC
4.7µF
1625 TA04
EXT
CLK
C
B 
0.22µF
D
B 
CMDSH-3
R
F
4.7Ω
C
F
0.1µF
C
IN
10µF
30V
×2
V
IN
6V TO 20V
C
SEC

3.3µF
35V
C1
0.01µF
M3
NDT410EL
D
S

SM4003TR*
D2
CDMSH-3
T1
8µH
1:2.53
R1
4.7k
R4
95.3k
1%
R3
11k
1%
+
+
C
OUT
100µF
10V
0.065Ω
×3
V
SEC
12V
120mA
V
OUT
3.3V
4A
+
R
S

100k
•
•
C
S

0.1µF
V
IN
TK
EXTV
CC
LTC1625
SYNC
V
PROG
SW
TG
BOOST
INTV
CC
BG
RUN/SS
FCB
I
TH
SGND
V
OSENSE
PGND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
12V/2.2A Adjustable Output
+
C
IN
: AVX TPSE226M020R0300
C
OUT
: AVX TPSE686M020R0150
L1: SUMIDA CDRH127-270MC
C
SS
0.1µF
R
C
22k
C
C
470pF
C
IN

22µF
35V
×2
V
IN

12.5V TO 28V
V
OUT

12V
2A
R2
35.7k
1%
R1
3.92k
1%
M2
Si4412DY
M1
Si4412DY
C
VCC
4.7µF
1625TA06
OPEN
C
B
0.1µF
D
B
CMDSH-3
L1
27µH
+
C
OUT

68µF
20V
0.15Ω
×2
+
V
IN
TK
EXTV
CC
LTC1625
SYNC
V
PROG
SW
TG
BOOST
INTV
CC
BG
RUN/SS
FCB
I
TH
SGND
V
OSENSE
PGND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
C
F
0.1µF
R
F
4.7Ω