AS1101, AS1102, AS1103, AS1104
Data Sheet
austriam
i c r o
systems
7 Application Information
Figure 4. Typical Application Diagrams
2 Diode Control with On/Off
V
IN
V
IN
3 Diode Control with On/Off
I
SET
V
SET
(3V)
R
SET
ENABLE
ON
CTRL
I1/I2
I3/I4
V
SET
(3V)
I
SET
R
SET
ENABLE
I3
CTRL
ON
I2
I1
AS1101
GND
AS1102
GND
4 Diode Control
V
IN
V
IN
4 Diode Control with On/Off
I
SET
V
SET
(3V)
R
SET
I4
CTRL
I3
I2
I1
V
SET
(3V)
I
SET
R
SET
ENABLE
I4
CTRL
ON
I3
I2
I1
AS1103
GND
AS1104
GND
Figure 5. Performance Characteristics
AS1101
90
80
70
60
50
40
30
20
10
0
0
20
40
60
80
I
SET
(µA)
100
120
140
160
I
LED
vs I
SET
45
40
35
30
25
20
15
10
5
0
0
20
40
60
80
I
SET
(µA)
100
120
140
160
AS1102 - AS1104
I
LED
vs I
SET
I
LED
(mA)
I
LED
(mA)
AS1101 vs Res is tor
60
50
AS1101
AS1102 - AS1104
60
50
40
I
LED
(mA)
LED Type 2
I
LED
vs V
IN
LED Type 1
I
LED
(mA)
40
30
20
10
0
3.0
3.5
4.0
V
IN
(V)
4.5
5.0
Resistor
30
20
10
0
3.0
3.5
4.0
V
IN
(V)
4.5
5.0
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