Datasheet

LT3742
23
3742fa
Typical applicaTions
High Current, Low Ripple 12V Step-Down Converter
12V
OUT
Efficiency vs Load Current
V
OUT1
12V
8A
V
IN
24V
V
IN
PG1
R1
2.8k
R7
124k
R8
20.0k
C5
1µF
C1
10µF
C3
10µF
L2
8.2µH
L1
8.2µH
R
S1
0.010Ω
R
S2
0.010Ω
C
C1
680pF
C7
1nF
C
OUTA
-C
OUTD
: KEMET T495E107K020E060
D1, D2: DIODES INC. PDS1040
L1, L2: NEC/TOKIN PLC12458R2
M1, M2: ROHM RSS065N03
R2
200Ω
R
C1
51k
M1
D1
C
OUTA
100µF
20V
C
OUTB
100µF
20V
C
OUTC
100µF
20V
C
OUTD
100µF
20V
V
IN
3742 TA05a
M2
D2
G1
UVLO
V
IN
L3 10µH
C6
4.7µF
SWB
GND
LT3742
BIAS
SW1
SENSE1
+
SENSE1
–
RUN/SS1
V
C1
G2
SW2
SENSE2
+
SENSE2
–
FB2
PG2
RUN/SS2
V
C2
PG2
PG1
FB1
LOAD CURRENT (A)
0
60
EFFICIENCY (%)
70
85
90
100
1 2 3 4
3742 TA05b
5 6 7 8