AAT2833 Datasheet, PDF (6/20 Pages) Advanced Analogic Technologies – 240mA Total Display Solution for Portable Devices

Typical Characteristics
AAT2833 Backlight Section Efficiency
100
90
30mA/Channel
80
19mA/Channel
70
60
50
2.1mA/Channel
40
30
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
1X Mode Hysteresis vs. Current Settings
500
450
400
350
300
250
200
150
100
50
0
2
4
6
8
10
12
14
16
Current Setting (Address 0, Data #)
EN/SET High Threshold Voltage
vs. Input Voltage
1.2
1.1
-40°C
25°C
1.0
0.9
0.8
0.7
85°C
0.6
0.5
0.4
0.3
0.2
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
AAT2833/34
240mA Total Display Solution
for Portable Devices
Backlight Current Matching vs. Temperature
32
31.5
31
30.5
Channel 5 Channel 6
30
29.5
29
Channel 3 Channel 2
28.5 _{Channel 4}
Channel 1
28
-40
-15
10
35
60
85
Temperature (°C)
BL1-BL6 Mode Transition Threshold
vs. Current Setting
140
120
100
80
60
40
20
0
2
4
6
8
10
12
14
16
Current Setting (Address 0, Data #)
EN/SET Low Threshold Voltage
vs. Input Voltage
1.2
1.1
-40°C
25°C
1.0
0.9
0.8
0.7
85°C
0.6
0.5
0.4
0.3
0.2
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
6
2833.2007.09.1.0