LT3519 LINER [Linear Technology], LT3519 Datasheet - Page 4

• Manufacturer Part Number: LT3519
• Description: LED Driver with Integrated Schottky Diode
• Manufacturer: LINER [Linear Technology]

LT3519
TYPICAL PERFORMANCE CHARACTERISTICS
4
260
258
256
254
252
250
248
246
244
240
260
258
256
254
252
250
248
246
244
242
240
300
250
200
150
100
–50
242
50
0
–50
0
0
V
V
Temperature
V
V
V
V
V
V
ISP
ISP-
ISP-
IN
ISP
IN
ISP
CTRL
–25
= 12V
= 12V
-V
= 24V
V
= 24V
V
10
ISN
= 2V
ISN
ISN
0.5
Threshold vs
0
Threshold vs V
Threshold vs V
TEMPERATURE (°C)
20
V
25
V
CTRL
ISP
1.0
(V)
(V)
50
30
75
ISP
CTRL
1.5
V
V
IN
CTRL
40
= 12V
100
= 2V
3519 G04
3519 G07
3519 G01
125
2.0
50
1200
1100
1000
1200
1100
1000
2.04
2.03
2.02
2.01
2.00
1.99
1.98
1.97
1.96
900
800
700
600
900
700
600
800
–50
0
0
Switch Current Limit vs
Duty Cycle
Switch Current Limit vs
Temperature
V
V
REF
IN
–25
= 12V
5
Voltage vs V
10
25
0
TEMPERATURE (°C)
DUTY CYCLE (%)
15
25
V
IN
20
50
IN
(V)
50
25
75
30
75
100
(T
35
3519 G02
3519 G05
3519 G08
A
= 25°C unless otherwise noted)
100
125
40
2.04
2.03
2.02
2.01
2.00
1.99
1.98
1.97
1.96
420
410
400
390
380
370
360
3.0
2.5
2.0
1.5
1.0
0.5
0
–50
–50
0
V
Oscillator Frequency vs
Temperature
Quiescent Current vs V
V
REF
IN
–25
–25
= 12V
Voltage vs Temperature
10
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
25
25
V
IN
20
(V)
50
50
IN
75
75
30
V
V
PWM
FB
100
100
= 1.5V
= 5V
3519 G09
3519 G03
3519
3519f
125
125
40