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LT3757EDD#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36
LT3757/LT3757A
28
3757afd
Typical applicaTions
3.3V Input, 5V/10A Output Boost Converter
Boost Preregulator for Automotive Stop-Start/Idle
Efficiency vs Output Current
Transient V
IN
and V
OUT
Waveforms
SENSE
LT3757
V
IN
V
IN
3.3V
C
IN
22µF
6.3V
×2
V
OUT
5V
10A
0.004Ω
1W
M1
41.2k
300kHz
GATE
FBX
GND
INTV
CC
SHDN/UVLO
SYNC
RT
SS
V
C
49.9k
34k
0.1µF
6.8k
22nF 2.2nF
22Ω
L1
0.5µH
D1
3757 TA02a
34k
1%
15.8k
1%
C
OUT1
150µF
6.3V
×4
C
OUT2
22µF
6.3V
X5R
×4
+
C
VCC
4.7µF
10V
X5R
C
IN
: TAIYO YUDEN JMK325BJ226MM
C
OUT1
: PANASONIC EEFUEOJ151R
C
OUT2
: TAIYO YUDEN JMK325BJ226MM
D1: MBRB2515L
L1: VISHAY SILICONIX IHLP-5050FD-01
M1: VISHAY SILICONIX SI4448DY
OUTPUT CURRENT (A)
EFFICIENCY (%)
3757 TA02b
0.001
20
30
40
50
60
70
80
90
100
0.01
0.1 1 10
SENSE
LT3757A
V
IN
V
IN
3V TO 36V
10µF
50V
X5R
×2
V
OUT
9V
MIN
2A
41.2k
300kHz
GATE
FBX
GND
INTV
CC
SHDN/UVLO
SYNC
RT
SS
V
C
1M
698k
0.1µF
10k
10nF 4.7µF
L1
3.3µH
D1
3757 TA03a
M1
75k
8mΩ
16.2k
C1
10µF
50V
×4
+
10µF
50V
X5R
L1: COILTRONIX DR127-3R3
M1: VISHAY SILICONIX Si7848BDP
D1: VISHAY SILICONIX 50SQ04FN
C1: KEMET T495X106K050A
10ms/DIV
V
OUT
5V/DIV
V
IN
5V/DIV
0V
3757 TA03b
OUTPUT POWER = 10W
LT3757/LT3757A
29
3757afd
Typical applicaTions
8V to 16V Input, 24V/2A Output Boost Converter
Efficiency vs Output Current Load Step Response at V
IN
= 12V
SENSE
LT3757
V
IN
V
IN
8V TO 16V
C
IN
10µF
25V
X5R
C
VCC
4.7µF
10V
X5R
V
OUT
24V
2A
R
S
0.01Ω
1W
M1
R
T
41.2k
300kHz
GATE
FBX
GND
INTV
CC
SHDN/UVLO
SYNC
RT
SS
VC
R3
200k
R4
43.2k
C
SS
0.1µF
C
C2
100pF
R
C
22k
C
C1
6.8nF
L1
10µH
D1
3757 TA04a
R2
226k
1%
R1
16.2k
1%
C
OUT1
47µF
35V
×4
C
OUT2
10µF
25V
X5R
+
C
IN
, C
OUT2
: MURATA GRM31CR61E106KA12
C
OUT1
: KEMET T495X476K035AS
D1: ON SEMI MBRS340T3G
L1: VISHAY SILICONIX IHLP-5050FD-01 10µH
M1: VISHAY SILICONIX Si4840BDP
OUTPUT CURRENT (A)
0.001
EFFICIENCY (%)
30
50
40
60
70
80
90
100
0.01
0.1 1
3757 TA04b
10
V
IN
= 8V
V
IN
= 16V
500µs/DIV
V
OUT
500mV/DIV
(AC)
1.6A
0.4A
I
OUT
1A/DIV
3757 TA04c
LT3757/LT3757A
30
3757afd
2ms/DIV
V
OUT
100V/DIV
3757 TA05b
5µs/DIV
V
OUT
5V/DIV
(AC)
V
SW
20V/DIV
3757 TA05c
Typical applicaTions
High Voltage Flyback Power Supply
Start-Up Waveforms Switching Waveforms
SENSE
LT3757
V
IN
V
SW
V
IN
5V TO 12V
C
IN
47µF
16V
×4
INTV
CC
C
OUT
68nF
×2
V
OUT
350V
10mA
0.02Ω
22Ω
M1
140k
100kHz
GATE
FBX
GND
SHDN/UVLO
DANGER! HIGH VOLTAGE OPERATION BY HIGH VOLTAGE TRAINED PERSONNEL ONLY
SYNC
RT
SS
V
C
•
•
105k
46.4k
0.1µF
220pF
100pF
6.8k
22nF
T1
1:10
D1
C
IN
: MURATA GRM32ER61C476K
C
OUT
: TDK C3225X7R2J683K
D1: VISHAY SILICONIX GSD2004S DUAL DIODE CONNECTED IN SERIES
M1: VISHAY SILICONIX Si7850DP
T1: TDK DCT15EFD-U44S003
3757 TA05a
1M
1%
1M
1%
1.50M
1%
16.2k
1%
10nF
C
VCC
47µF
25V
X5R
22Ω
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36

LT3757EDD#PBF

Mfr. #:
Buy LT3757EDD#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators Boost, Fly, SEPIC & Inv Cntr
Lifecycle:
New from this manufacturer.
Delivery:
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