Datasheet

LT3742
20
3742fa
Typical applicaTions
Supercap Charger Plus a DC/DC Buck Converter
L1
4.7µH
R
S1
0.010Ω
V
OUT1
5V
4A
V
IN
5.5V TO 30V
V
IN
PG1
R1
1.05k
R8
124k
R7
357k
C5
1µF
C2
150µF
C1
6.8µF
C
C1
680pF
RUN1
C7
1nF
D1, D2: DIODES INC. PDS1040
M1, M2: SILICONIX Si7884DP
M3
R2
200Ω
R
C1
51k
M1
D1
L2
47µH
R
S2
0.030Ω
SUPERCAP
CHARGER
OUTPUT
C3
6.8µF
V
IN
C4
47µF
150mF
C
C2
1000pF
RUN2
3742 TA02
C8
1nF
M4
M2
D2
G1
UVLO
V
IN
L3
22µH
C6
4.7µF
SWB
GND
LT3742
BIAS
SW1
SENSE1
+
SENSE1
–
FB1
PG1
RUN/SS1
V
C1
1
3
24
21
20
19
17
16
18
6
2 5 4
7
10
11
12
14
15
13
G2
SW2
SENSE2
+
SENSE2
–
FB2
PG2
RUN/SS2
V
C2
PG2
25