LT3491EDC#TRPBF Linear Technology, LT3491EDC#TRPBF Datasheet - Page 4

• Manufacturer Part Number: LT3491EDC#TRPBF
• Description: IC LED DRIVER WHITE BCKLGT 6-DFN
• Manufacturer: Linear Technology
• Type: Backlight, White LEDr

Specifications of LT3491EDC#TRPBF

• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: White LED
• Frequency: 2.3MHz
• Voltage - Supply: 2.5 V ~ 12 V
• Mounting Type: Surface Mount
• Package / Case: 6-DFN
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 200mA
• Internal Switch(s): Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Efficiency: -

LT3491
4
TYPICAL PERFOR A CE CHARACTERISTICS
240
200
160
120
3.0
2.5
2.0
1.5
1.0
0.5
30
29
28
27
26
25
80
40
0
0
–50 –25
0
0
Quiescent Current (V
Open-Circuit Output Clamp Voltage
vs Temperature
Sense Voltage (V
vs V
CTRL
500
3
0
TEMPERATURE (°C)
V
25
CTRL
V
1000
IN
6
CAP
(V)
(mV)
50
CTRL
– V
75
1500
LED
9
= 3V)
W
)
100
–50°C
25°C
85°C
3491 G15
3491 G09
3491 G12
2000
U
125
12
450
350
300
250
200
100
400
150
212
208
204
200
196
192
50
0
6
5
2
0
4
3
1
–50
30
5
Switching Current Limt
vs Duty Cycle
Input Current in Output Open Circuit
vs Temperature
Sense Voltage (V
vs V
V
IN
–25
= 3V
CAP
40
10
0
TEMPERATURE (°C)
50
DUTY CYCLE (%)
25
V
25°C
CAP
60
15
CAP
(V)
50
– V
70
75
LED
20
80
)
100
(T
3491 G10
3491 G13
3491 G16
A
= 25°C unless otherwise specified)
125
90
25
2.10
1.95
2.20
2.15
2.05
2.00
204
192
212
208
200
196
15
12
9
6
3
0
–50 –25
–50 –25
–50
Schottky Leakage Current
vs Temperature
Sense Voltage (V
vs Temperature
Switching Frequency
vs Temperature
–25
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
0
25
25
25
CAP
50
50
– V
50
75
75
LED
V
V
V
R
R
R
)
75
100
100
= 10V
= 16V
= 20V
3491 G17
3491 G11
3419 G14
3491fa
125
125
100