Datasheet

LT3599
6
3599fe
V
C
Pin Active and Clamp Voltages
LED Current vs PWM Duty Cycle Switch Saturation Voltage
Switch Current Limit Feedback Pin Voltage
LED Current vs Temperature
LED Current Waveforms
(0.1% PWM) (10ms Period)
LED Current Waveforms
(90% PWM) (10ms Period)
V
C
(V)
1500
2000
2500
1000
500
0
3599 G10
V
C
HIGH
V
C
ACTIVE
JUNCTION TEMPERATURE (°C)
–50
050
–25
25 75 100 150125
PWM DUTY CYCLE (%)
0.01
LED CURRENT (mA)
1
100
1100.1 100
3599 G11
0.1
0.01
10
JUNCTION TEMPERATURE (°C)
–50
LED CURRENT (mA)
100
99
050
–25
25 75 100 150125
97
98
101
3599 G15
I
SW
(A)
0
0
V
CESAT
(V)
0.10
0.20
0.30
0.5 1 21.5
0.40
0.05
0.15
0.25
0.35
2.5
3599 G12
2μs/DIV
PWM
5V/DIV
SW
20V/DIV
I
LED1
50mA/DIV
3599 G16
100μs/DIV
PWM
5V/DIV
SW
20V/DIV
I
LED1
50mA/DIV
3599 G17
SWITCH CURRENT (A)
1.6
2.0
2.8
1.2
0.8
0.4
2.4
3599 G13
JUNCTION TEMPERATURE (°C)
–50
050
–25
25 75 100 150125
JUNCTION TEMPERATURE (°C)
–50
1200
FEEDBACK PIN VOLTAGE (mV)
1205
1215
1220
1225
1250
1235
0
50
75
1210
1240
1245
1230
–25
25
100
150125
3599 G14
TYPICAL PERFORMANCE CHARACTERISTICS
T
A
= 25°C unless otherwise specifi ed