LT1937 LINER [Linear Technology], LT1937 Datasheet - Page 4

• Manufacturer Part Number: LT1937
• Description: 20mA LED Driver and OLED Driver with Integrated Schottky in 3mm x 2mm DFN
• Manufacturer: LINER [Linear Technology]

LT3498
TYPICAL PERFORMANCE CHARACTERISTICS
4
400
300
500
450
350
240
200
160
120
15
12
80
40
3
0
0
9
6
–50 –25
Shutdown Current
(V
0
Sense Voltage (V
vs V
0
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
25
T = 125 C
CTRL1
V
1000
IN
6
= 0V)
CAP1
(V)
(mV)
50
– V
8
75
T = 25 C
1500
LED1
10
100
)
3498 G04
3498 G07
1635 G07
2000
125
12
300
206
202
198
194
190
186
500
450
400
350
250
200
150
100
29
25
50
28
27
26
0
–50 –25
LED Switch Saturation
Voltage (V
Sense Voltage (V
vs Temperature
Open Circuit Output
Clamp Voltage
0
0
50
2
T = 150 C
T = –50 C
100
SWITCH CURRENT (mA)
0
TEMPERATURE ( C)
CESAT1
T = 125 C
4
150
25
V
200 250
IN
)
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
350
300
200
150
100
206
202
190
400
250
198
194
186
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)
200
T = –50 C
4
5
CAP1 VOLTAGE (V)
400
6
10
T = 125 C
T = 25 C
V
IN
CAP1
(V)
T = 125 C
600
8
15
– V
LED1
T = 25 C
T = –50 C
T = 150 C
T = 25 C
T = –50 C
10
800
20
)
3498 G09
3498 G06
3498 G03
3498f
1000
12
25