LT3743
TYPICAL APPLICATIONS
24V, 20A 3-LED Driver
EN/UVLO
PWM
V CC_INT
EN/UVLO
PWM
CTRL_SEL
V IN
1μF
82μF
V IN
24V
100
Efficiency
V CC_INT
2.2nF
82.5k
R HOT
499?
20k
60.4k
RT HG
SYNC
CBOOT
V REF LT3743 SW
CTRL_H
LG
GND
CTRL_L SENSE +
SENSE –
PWMGH
CTRL_T PWMGL
100nF
20μF
M1
L1
1.2μH
M2
2.5m
10?
33nF
10?
OUTPUT
20A MAXIMUM
470μF
RED
LEDs
M3
316k
95
90
85
80
75
70
65
60
0
20
40 60
DUTY CYCLE (%)
V IN = 24V
3 RED LEDs
80 100
R NTC
10k
10nF
SS
V CL
V CH
FB
20k
3743 TA07b
24.3k
4.7nF
L1: 1HLP5050FDER1R2M01
M1: Si7848BDP
M2, M3: RJK0330DPB
3743 TA07
3743fd
24
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