AAT3114AISN-20-T1 AAT [Advanced Analog Technology, Inc.], AAT3114AISN-20-T1 Datasheet - Page 9

• Manufacturer Part Number: AAT3114AISN-20-T1
• Description: High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
• Manufacturer: AAT [Advanced Analog Technology, Inc.]

Applications Information
Current Level Settings
LED current level is set via the serial interface
according to a logarithmic scale where each code
is 1dB greater than the previous code. In this man-
ner, the LED brightness appears linear with each
increasing code.
3113.2006.07.1.9
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
1
2
3
Code
4
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
5
6
7
Table 1: Current Level Settings.
8
Normalized Current Level Settings
20mA max
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
0.549
0.627
0.706
0.784
0.863
1.020
1.098
1.255
1.412
1.569
1.804
1.961
2.275
2.510
2.824
3.137
High Efficiency 1.5X Fractional Charge
Code
Pumps For White LED Applications
Code
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
20mA max
10.039
12.627
15.843
17.804
20.000
11.216
14.118
3.529
4.000
4.471
5.020
5.647
6.353
7.059
7.922
8.941
9