AS1109_1 AMSCO [austriamicrosystems AG], AS1109_1 Datasheet - Page 7

• Manufacturer Part Number: AS1109_1
• Description: Constant-Current, 8-Bit LED Driver with Diagnostics
• Manufacturer: AMSCO [austriamicrosystems AG]

AS1109
Data Sheet - Ty p i c a l O p e r a t i n g C h a r a c t e r i s t i c s
7 Typical Operating Characteristics
Figure 3. Output Current vs. R
V
Figure 5. Output Current vs. V
V
Figure 7. Relative I
V
www.austriamicrosystems.com
DD
DD
DD
= 5V; V
100
= 5V, T
160
140
120
100
= 5V, Iout/Iout@25°C - 1, T
-0.5
0.5
10
80
60
40
20
-1
1
0
1
0
100
-50
0
REXT = 186Ω;
VDS = 0.8V
AMB
REXT = 372Ω;
VDS = 0.6V
OUT
2
-25
= 25°C
= 0.8V, T
4
OUT
Temperature (°C)
0
R
EXT
Error vs. Temperature
6
AMB
V
1000
DS
25
(Ohm)
8
= 25°C
(V)
EXT
DS
AMB
;
50
,
10
REXT = 372Ω
REXT = 744Ω
REXT = 127Ω
REXT = 150Ω
REXT = 186Ω
REXT = 251Ω
REXT = 744Ω;
VDS = 0.5V
= 25°C
12
75
10000
14
100
Revision 1.18
Figure 4. Relative Output Current Error vs. V
Iout/Iout@VDD = 5V - 1, T
Figure 6. Output Current vs. V
V
Figure 8. Output Current vs. V
DD
-0.5
-1.5
160
140
120
100
160
140
120
100
= 5V, T
1.5
0.5
80
60
40
20
80
60
40
20
-1
-2
0
2
1
0
0
0
3
3
REXT = 372Ω;
VDS = 0.6V
REXT = 744Ω;
VDS = 0.5V
AMB
0.2
3.5
3.5
= 25°C
0.4
0.6
4
4
V
V
V
DD
AMB
DS
DD
0.8
(V)
(V)
(V)
REXT = 186Ω;
VDS = 0.8V
= 25°C
DS
4.5
4.5
DD
;
1
REXT = 372Ω
REXT = 744Ω
REXT = 127Ω
REXT = 150Ω
REXT = 186Ω
REXT = 251Ω
VDS = 0.6V
VDS = 0.5V
VDS = 0.8V
VDS = 0.7V
VDS = 0.9V
1.2
5
5
VDS = 1V
1.4
DD
5.5
5.5
,
7 - 26