|
Infineon Technologies AG |
LED Driver
Supplies stable bias current even at low battery
voltage
Low voltage drop of 0.75V
Ideal for stabilizing bias current of LEDs
Negative temperature coefficient protects
LEDs against thermal overload
BCR401R
43
12
EHA07188
Type
Marking
BCR401R W5s 1 = GND
Pin Configuration
2 = Iout
3 = VS
4 = Rext
Package
SOT143R
Maximum Ratings
Parameter
Source voltage
Output current
Output voltage
Reverse voltage between all terminals
Total power dissipation, TS = 87 °C
Junction temperature
Storage temperature
Symbol
VS
Iout
Vout
VR
Ptot
Tj
Tstg
Value
18
60
16
0.5
330
150
-65 ... 150
Unit
V
mA
V
mW
°C
Thermal Resistance
Parameter
Junction - soldering point1)
Symbol
RthJS
Value
190
Unit
K/W
1For calculation of RthJA please refer to Application Note Thermal Resistance
1 Aug-29-2001
BCR401R
Electrical Characteristics at TA=25°C, unless otherwise specified
Parameter
Symbol
Values
Unit
min. typ. max.
Characteristics
Supply current
VS = 10 V
Output current
VS = 10 V, Vout = 7.6 V
IS 350 440 540 µA
Iout 9 10 11 mA
DC Characteristics with stabilized LED load
Lowest sufficient battery voltage overhead
Iout > 8mA
Voltage drop (VS - VCE)
Iout = 20 mA
Output current change versus TA
VS = 10 V
Output current change versus VS
VS = 10 V
VSmin
Vdrop
Iout/Iout
Iout/Iout
-
-
-
-
1.2
0.75
-0.3
2
-V
-
- %/K
- %/V
2 Aug-29-2001
|