Datasheet

LT3743
24
3743fd
TYPICAL APPLICATIONS
24V, 20A 3-LED Driver
EN/UVLO
PWM
CTRL_SEL
EN/UVLO
PWM
V
CC_INT
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
1.2µH
M1
M2
M3
20µF
470µF
10Ω
RED
LEDs
2.5mΩ
FB
10nF
24.3k
4.7nF
82.5k
20k
60.4k
316k
L1: 1HLP5050FDER1R2M01
M1: Si7848BDP
M2, M3: RJK0330DPB
3743 TA07
20k
2.2nF
R
NTC
10k
82µF
V
IN
24V
OUTPUT
20A MAXIMUM
1µF
SS
R
HOT
499Ω
10Ω
33nF
Efficiency
DUTY CYCLE (%)
0
EFFICIENCY (%)
80
90
100
80
3743 TA07b
70
75
85
95
65
60
20
40
60
100
V
IN
= 24V
3 RED LEDs