Datasheet

LT3758/LT3758A
27
3758afd
typicAl ApplicAtions
10V to 40V Input, 48V Output Boost Converter
Efficiency vs Output Current
SENSE
LT3758
V
IN
V
IN
10V TO 40V
C
IN
4.7µF
50V
X7R
×2
V
OUT
48V
1A
R
S
0.012Ω
R
T
41.2k
300kHz
GATE
FBX
GND
INTV
CC
SHDN/UVLO
SYNC
RT
SS
R3
200k
R4
32.4k
C
SS
0.68µF
C
C2
100pF
R
C
10k
C
C1
10nF
L1
18.7µH
3758 TA02a
R2
464k
D1
M1
R1
15.8k
C
VCC
4.7µF
10V
X5R
C
OUT2
4.7µF
50V
X7R
×4
C
OUT1
100µF
63V
+
C
IN
, C
OUT2
: MURATA GRM32ER71H475KA88L
C
OUT1
: PANASONIC ECG EEV-TG1J101UP
D1: VISHAY SILICONIX 30BQ060
L1: PULSE PB2020.223
M1: VISHAY SILICONIX SI7460DP
V
C
OUTPUT CURRENT (A)
0.001
EFFICIENCY (%)
10
50
40
30
20
60
70
80
90
100
0.01
0.1
3758 TA02b
1
V
IN
= 40V
V
IN
= 24V
V
IN
= 10V
Start-Up Waveforms
5ms/DIV
V
OUT
20V/DIV
I
L1
2A/DIV
3758 TA02c
V
IN
= 24V