Datasheet

LT3743
22
3743fd
TYPICAL APPLICATIONS
6V to 36V, 2A LED Driver With Shunted Output
EN/UVLO
PWM
CTRL_SEL
EN/UVLO
INTV
CC
CTRL_SEL
HG
V
IN
CBOOT
V
REF
CTRL_L
CTRL_H
CTRL_T
LT3743
RT
SYNC
SW
LG
GND
V
CH
V
CL
SENSE
+
SENSE
–
PWMGH
PWMGL
V
CC_INT
100nF
L1
10µH
22µF
25mΩ
FB
10nF
34k
4.7nF
34k
4.7nF
82.5k
40.2k
M3
D1: LUMINUS CBT-40
L1: MSS1048-103MLB
M1, M2: Si7848BDP
M3: Si2312BDS
D1
M2
M1
3743 TA03
10k
2.2nF
R
NTC
10k
8.2µF
V
IN
6V TO 36V
OUTPUT
2A MAXIMUM
2.2µF
1µF
SS
R
HOT
499Ω
CONTROL
INPUT
Shunted Output with CTRL_H
Equal to CTRL_L
6V to 36V, 2A LED Driver With Current Limited Shunted Output
Shunted Output with CTRL_L at GND
EN/UVLO
PWM
CTRL_SEL
EN/UVLO
INTV
CC
CTRL_SEL
HG
V
IN
CBOOT
V
REF
CTRL_H
CTRL_L
CTRL_T
LT3743
RT
SYNC
SW
LG
GND
V
CH
V
CL
SENSE
+
SENSE
–
PWMGH
PWMGL
V
CC_INT
100nF
L1
10µH
22µF
25mΩ
FB
10nF
34k
4.7nF
34k
4.7nF
82.5k
40.2k
D1
3743 TA04
10k
2.2nF
R
NTC
10k
8.2µF
M1
M2
M3
V
IN
6V TO 36V
OUTPUT
2A MAXIMUM
2.2µF
1µF
SS
R
HOT
499Ω
CONTROL
INPUT
D1: LUMINUS CBT-40
L1: IHLP4040DZE10R0M01
M1, M2: Si7848BDP
M3: Si2312BDS
SW
2V/DIV
I
L
2A/DIV
CTRL_SEL
5V/DIV
I
LED
1A/DIV
20µs/DIV
3743 TA03b
SW
10V/DIV
I
L
2A/DIV
CTRL_SEL
5V/DIV
I
LED
1A/DIV
20µs/DIV
3743 TA04b