LT3498EDDB#TRPBF Linear Technology, LT3498EDDB#TRPBF Datasheet - Page 4

• Manufacturer Part Number: LT3498EDDB#TRPBF
• Description: IC LED DRVR WT/OLED BCKLGT 12DFN
• Manufacturer: Linear Technology
• Type: Backlight, OLED, White LEDr

Specifications of LT3498EDDB#TRPBF

• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: OLED, White LED
• Frequency: 1.8MHz ~ 2.8MHz
• Voltage - Supply: 2.5 V ~ 12 V
• Voltage - Output: 32V
• Mounting Type: Surface Mount
• Package / Case: 12-DFN
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 20mA
• Internal Switch(s): Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Efficiency: -

LT3498
TYPICAL PERFORMANCE CHARACTERISTICS
4
500
450
400
350
300
240
200
160
120
15
80
40
12
0
9
6
3
0
–50 –25
0
Shutdown Current
(V
0
Sense Voltage (V
vs V
LED Current Limit
vs Temperature
CTRL1
CTRL1
2
T = 25°C
T = –50°C
T = 125°C
500
= V
0
TEMPERATURE (°C)
4
CTRL2
V
T = –50°C
CTRL1
25
T = 125°C
V
1000
IN
6
= 0V)
CAP1
(V)
(mV)
50
– V
8
75
T = 25°C
1500
LED1
10
100
)
3498 G04
3498 G07
3498 G01
2000
125
12
198
300
206
202
194
190
186
500
450
400
350
250
200
150
100
29
25
28
27
26
50
0
–50 –25
0
LED Switch Saturation
Voltage (V
Sense Voltage (V
vs Temperature
Open Circuit Output
Clamp Voltage
0
50
2
T = 150°C
T = –50°C
100
SWITCH CURRENT (mA)
0
TEMPERATURE (°C)
CESAT1
T = 125°C
4
150
25
V
IN
200 250
)
6
CAP1
(V)
T = –50°C
50
– V
8
75
300 350 400
T = 25°C
LED1
T = 25°C
10
100
)
T
3498 G05
3498 G08
A
3498 G02
= 25°C, unless otherwise specifi ed.
125
12
206
202
194
190
186
200
100
198
400
350
300
250
150
50
6
5
4
3
2
1
0
0
0
0
2
LED Schottky Forward
Voltage Drop
Sense Voltage (V
vs V
Input Current in Output
Open Circuit
CAP1
SCHOTTKY FORWARD DROP (mV)
T = –50°C
200
4
5
CAP1 VOLTAGE (V)
400
10
6
T = 125°C
T = 25°C
V
IN
CAP1
(V)
T = 125°C
600
15
8
– V
LED1
T = 25°C
T = –50°C
800
T = 150°C
T = 25°C
T = –50°C
10
20
)
3498 G06
3498 G09
3498 G03
3498fa
1000
25
12