Multiple & Tracker
Constant Cur rent
Source
Power Supply
Multiple regulators
Type
TLE 4470
TLE 4471
TLE 4473
TLE 4476
TLE 7469
Output current Output current Operating Output voltage Output voltage Load dump
Drop
Accuracy Leakage
1 [mA]
2/3 [mA]
range [V]
1 [V]
2/3 [V]
protection [V] voltage [V]
(%)
current [µA]
350
450
300
430
215
180
100/50
180
350
215
45
40
42
42
45
5
5
5
5
5
adj.
5 and 5
3.3 or 2.6
3.3
3.3 or 2.6
65
65
0.3
0.25
0.3
0.3
0.3
2
2
2
4
2
20
1
100
9
Trackers
Output current Output current Operating Output voltage Output voltage Load dump
Drop
Accuracy Leakage
1 [mA]
2/3 [mA]
range [V]
1 [V]
2/3 [V]
protection [V] voltage [V]
(%)
current [µA]
45
TLE 4250-2
50
adj.
0.1
0.5
20
45
TLE 4251
400
adj.
0.28
0.2
2
TLE 4252
250
40
adj.
0.28
0.2
2
1)
TLE 4253
250
45
adj.
0.28
0.1
2
1)
TLE 4254
70
45
adj.
0.28
0.1
5
1)
Type
V
Q
>
V
ref possible
Constant current source
Short description:
Constant output current, therefore constant
brightness and extended LED lifetime
Wide input voltage range
Low drop voltage
Open load detection
Overtemperature protection
Short-circuit proof
Reverse-polarity proof
Wide temperature range
Very small SMD packages
Parameters
TLE 4240-2
TLE 4241
TLE 4242
Output
current [mA]
60
8 / 65
500
Output
current [mA]
fixed
adj.
adj.
Operating
range [V]
45
45
45
Drop
voltage [V]
0.5
0.3
0.35
Accuracy
(%)
10
20
5
Quiescent curr. IQ
[µA]
N. A.
2
2
44
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