Datasheet

LT3743
8
3743fd
TYPICAL PERFORMANCE CHARACTERISTICS
LED Current Waveforms
(3000:1) 2A to 20A
LED Current Waveforms
(3000:1) 0A to 2A to 20A
LED Current Waveforms (3000:1)
Analog Dimming on CTRL_L
C
OUT(LOW)
= 22µF, C
OUT(HIGH)
= 1mF
Overcurrent Threshold
LED Current Waveforms
(90% PWM) 0.5A to 5A
LED Current Waveforms
(2000:1) 3A to 10A
Voltage Regulation with 10A
Regulated Inductor Current Common Mode Lockout (V
IN
= 7V)
Overvoltage Lockout Operation
With Open-Load Condition
CTRL_H (V)
0
0
V
SENSE
+
– V
SENSE
–
(mV)
20
40
60
80
100
120
0.75 1.5 2.25 3.0
3743 G28
CTRL_SEL
5V/DIV
SW
20V/DIV
I
LED
5A/DIV
I
L
10A/DIV
40µs/DIV
3743 G29
CTRL_SEL
5V/DIV
I
LED
5A/DIV
I
L
10A/DIV
5µs/DIV
3743 G30
CTRL_SEL
5V/DIV
SW
10V/DIV
PWM
5V/DIV
I
LED
10A/DIV
20µs/DIV
3743 G32
CTRL_L
0.2V/DIV
CTRL_SEL
5V/DIV
PWM
5V/DIV
I
LED
8A/DIV
40µs/DIV
3743 G33
V
OUT
2V/DIV
I
L
5A/DIV
100µs/DIV
3743 G34
V
OUT
2V/DIV
I
L
200mA/DIV
1ms/DIV
3743 G35
V
OUT
2V/DIV
I
L
200mA/DIV
40ms/DIV
3743 G36
CTRL_SEL
5V/DIV
SW
10V/DIV
I
LED
11.1A/DIV
20µs/DIV
3743 G31