AAT2833/34
240mA Total Display Solution
for Portable Devices
Typical Characteristics
AAT2833 Backlight Section Efficiency
100
Backlight Current Matching vs. Temperature
32
Efficiency (%)
80
70
60
50
40
30
2.7
19mA/Channel
LED Current (mA)
90
30mA/Channel
31.5
31
30.5
30
29.5
29
28.5
Channel 5 Channel 6
2.1mA/Channel
Channel 3
Channel 4
-15
Channel 2
Channel 1
10
35
60
85
3.1
3.5
3.9
4.3
4.7
5.1
5.5
28
-40
Input Voltage (V)
Temperature (°C)
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
140
120
BL1-BL6 Mode Transition Threshold
vs. Current Setting
Hysteresis (mV)
Threshold (mV)
100
80
60
40
20
0
2
4
6
8
10
12
14
16
Current Setting (Address 0, Data #)
Current Setting (Address 0, Data #)
EN/SET High Threshold Voltage
vs. Input Voltage
EN/SET High Threshold (V)
1.1
1.0
0.9
0.8
0.7
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
EN/SET Low Threshold Voltage
vs. Input Voltage
EN/SET Low Threshold (V)
1.2
1.1
1.0
0.9
0.8
0.7
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
1.2
-40°C
25°C
-40°C
25°C
85°C
85°C
Input Voltage (V)
Input Voltage (V)
6
2833.2007.09.1.0
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
