BCR401 [INFINEON]
LED Driver(Supplies stable bias current even at low battery voltage); LED驱动器（供应稳定的偏置电流，即使在低电池电压）
| 型号： | BCR401 |
| 厂家： | 
Infineon |
| 描述： | LED Driver(Supplies stable bias current even at low battery voltage) |
| 文件： | 总3页 (文件大小：45K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
BCR401R
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
4
3
1
2
EHA07188
Type
Marking
Pin Configuration
2 = I 3 = V
Package
BCR401R W5s
1 = GND
4 = R
ext
SOT143R
out
S
Maximum Ratings
Parameter
Symbol
Value
Unit
Source voltage
V
18
V
S
Output current
Output voltage
I
60
16
mA
V
out
V
out
Reverse voltage between all terminals
V
P
0.5
R
330
mW
°C
Total power dissipation, T = 87 °C
tot
S
Junction temperature
Storage temperature
T
150
j
T
-65 ... 150
stg
Thermal Resistance
Parameter
Symbol
Value
Unit
1)
Junction - soldering point
R
190
K/W
thJS
1
For calculation of R
thJA
please refer to Application Note Thermal Resistance
1
Aug-29-2001
BCR401R
Electrical Characteristics at T =25°C, unless otherwise specified
A
Parameter
Symbol
Values
typ. max.
Unit
min.
350
9
Characteristics
440
10
540 µA
Supply current
I
S
V = 10 V
S
11
mA
Output current
I
out
V = 10 V, V = 7.6 V
S
out
DC Characteristics with stabilized LED load
Lowest sufficient battery voltage overhead
V
V
-
-
-
-
1.2
0.75
-0.3
2
-
-
-
-
V
Smin
I
> 8mA
out
Voltage drop (V - V )
S
CE
drop
I
= 20 mA
out
%/K
Output current change versus T
Iout/Iout
Iout/Iout
A
V = 10 V
S
%/V
Output current change versus V
S
V = 10 V
S
2
Aug-29-2001
BCR401R
Output current versus supply voltage
= f (V ); R = Parameter
Total power dissipation P = f(T )
tot
S
I
out
S
ext
Load: two LEDs with V = 3.8V in series
F
10 -1
500
Rext = 36 Ohm
Rext = 82 Ohm
Rext = 160 Ohm
mW
Rext = open
A
300
200
100
0
10 -2
10 -3
°C
V
0
20
40
60
80
100 120
150
0
2
4
6
8
10 12 14 16
20
T
V
S
S
Supply current versus supply voltage
Application Circuit:
I = f(V )
+
V
s
S
S
B
C
R
4
0
1
R
3
Load: two LEDs with V = 3.8V in series
F
10 -3
R
e
x
t
d
V
r
o
p
4
A
10 -4
1
2
I
s
I
o
u
t
10 -5
V
0
2
4
6
8
10 12 14 16
20
V
S
3
Aug-29-2001
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