LT3492 LINER [Linear Technology], LT3492 Datasheet - Page 5

• Manufacturer Part Number: LT3492
• Description: Triple Output LED Driver with 3000:1 PWM Dimming
• Manufacturer: LINER [Linear Technology]

TYPICAL PERFORMANCE CHARACTERISTICS
1200
1000
800
600
400
200
103
102
101
100
1.4
1.3
1.2
1.1
1.0
99
98
97
0
–50
–50
–50
Switch Frequency vs Temperature
Switch Current Limit vs
Temperature
V
Temperature
FADJ = 0.5V
CTRL = 1.2V
V
ISP-
ISP
–25
–25
–25
= 24V
V
ISN
0
0
0
Threshold vs
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
25
25
25
50
50
50
75
75
75
100
100
100
3492 G04
3492 G07
3492 G10
125
125
125
PWM
TG
2.04
2.03
2.02
2.01
2.00
1.99
1.98
1.97
1.96
120
100
60V
50V
80
60
40
20
5V
0V
0
–50
0
V
Reference Voltage
vs Temperature
V
Q
PMOS Turn On Waveforms
V
ISP
G
ISP
ISP
FET = 6nC
–25
= 60V
-V
= 24V
0.2
ISN
0
Threshold vs CTRL
TEMPERATURE (°C)
0.4
200ns/DIV
CTRL (V)
25
0.6
50
0.8
75
100
1
(T
3492 G08
3492 G05
3492 G11
A
125
1.2
= 25°C unless otherwise noted)
PWM
2250
1750
1500
1250
1000
2000
750
500
TG
250
103
102
101
100
60V
50V
99
98
97
5V
0V
0
0
0
Switch Frequency vs FADJ
V
V
Q
PMOS Turn Off Waveforms
CTRL = 1.2V
ISP-
ISP
G
FET = 6nC
= 60V
0.2
V
10
ISN
Threshold vs V
0.4
20
FADJ (V)
200ns/DIV
V
ISP
0.6
30
(V)
LT3492
0.8
40
ISP
1.0
50
3492 G06
3492 G09
3492 G12
5
3492f
1.2
60