AAT2830/31
800mA Total Display Solution
for Portable Devices
Typical Characteristics
AAT2830 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)
AAT2830 Flash Section Efficiency
100
55
54
Flash Current Matching vs. Temperature
LED Current (mA)
90
53
52
51
50
49
48
47
46
45
Efficiency (%)
80
70
60
50
40
30
2.7
3.1
3.5
3.9
Data 6, 75mA/Channel
Channel 2
Channel 4
Channel 1
Channel 3
Data 16, 19mA/Channel
4.3
4.7
5.1
5.5
-40
-15
10
35
60
85
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 #)
6
2830.2007.09.1.0
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
