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SP7682EB Datasheet(PDF) 14 Page - Exar Corporation

Part # SP7682EB
Description  Backlight and Flash Driver in QFN 3mm x 3mm
PDF  19 Pages
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

SP7682EB Datasheet(HTML) 14 Page - Exar Corporation

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Sept 27-07 rev G
SP7682: Backlight and Flash Driver
© 2007 Exar Corporation
Page 14
DAC table for Backlight LED intensity
In the LED register bits B7, B6, B5, B4, B3 and B2
represent the DAC codes D5-D0 used to set the LED
current in the four LEDs. The following table lists the
DAC codes and the corresponding current for each
channel in mA:
B7-B2
BL
(mA)
B7-B2
BL
(mA)
000000
0
100000
16.0
000001
0.5
100001
16.5
000010
1.0
100010
17.0
000011
1.5
100011
17.5
000100
2.0
100100
18.0
000101
2.5
100101
18.5
000110
3.0
100110
19.0
000111
3.5
100111
19.5
001000
4.0
101000
20.0
001001
4.5
101001
20.5
001010
5.0
101010
21.0
001011
5.5
101011
21.5
001100
6.0
101100
22.0
001101
6.5
101101
22.5
001110
7.0
101110
23.0
001111
7.5
101111
23.5
010000
8.0
110000
24.0
010001
8.5
110001
24.5
010010
9.0
110010
25.0
010011
9.5
110011
25.5
010100
10.0
110100
26.0
010101
10.5
110101
26.5
010110
11.0
110110
27.0
010111
11.5
110111
27.5
011000
12.0
111000
28.0
011001
12.5
111001
28.5
011010
13.0
111010
29.0
011011
13.5
111011
29.5
011100
14.0
111100
30.0
011101
14.5
111101
30.5
011110
15.0
111110
31.0
011111
15.5
111111
31.5
DAC table for FLASH LED intensity
In the FLASH register bits B7, B6, B5, B4, B3 and B2
represent the DAC codes D5-D0 used to set the LED
current in the four LEDs. The following table lists the
DAC codes and the corresponding current for each
channel in mA:
B7-B2
Flash
(mA)
B7-B2
Flash
(mA)
000000
0
100000
320
000001
10
100001
330
000010
20
100010
340
000011
30
100011
350
000100
40
100100
360
000101
50
100101
370
000110
60
100110
380
000111
70
100111
390
001000
80
101000
400
001001
90
101001
410
001010
100
101010
420
001011
110
101011
430
001100
120
101100
440
001101
130
101101
450
001110
140
101110
460
001111
150
101111
470
010000
160
110000
480
010001
170
110001
490
010010
180
110010
500
010011
190
110011
500
010100
200
110100
500
010101
210
110101
500
010110
220
110110
500
010111
230
110111
500
011000
240
111000
500
011001
250
111001
500
011010
260
111010
500
011011
270
111011
500
011100
280
111100
500
011101
290
111101
500
011110
300
111110
500
011111
310
111111
500
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