AAT3113ITP-20-T1 datasheet(9/15 Pages) AAT

Part #	AAT3113ITP-20-T1

Description	High Efficiency 1.5X Fractional Charge Pumps For White LED Applications

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Manufacturer	AAT [Advanced Analog Technology, Inc.]

Direct Link	http://www.aatech.com.tw

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AAT3113, AAT3114/14A

High Efficiency 1.5X Fractional Charge

Pumps For White LED Applications

3113.2006.07.1.9

9

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.

Table 1: Current Level Settings.

Code

20mA max

Code

20mA max

1

0.549

17

3.529

2

0.627

18

4.000

3

0.706

19

4.471

4

0.784

20

5.020

5

0.863

21

5.647

6

1.020

22

6.353

7

1.098

23

7.059

8

1.255

24

7.922

9

1.412

25

8.941

10

1.569

26

10.039

11

1.804

27

11.216

12

1.961

28

12.627

13

2.275

29

14.118

14

2.510

30

15.843

15

2.824

31

17.804

16

3.137

32

20.000

Normalized Current Level Settings

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

1

2

3

4

5

6

7

8

9

1011 121314 15161718 192021 222324 252627 282930 3132

Code

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