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AS3687 데이터시트(PDF) 31 Page - ams AG

부품명 AS3687
상세설명  Flexible Lighting Management
PDF  55 Pages
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제조업체  AMSCO [ams AG]
홈페이지  http://www.ams.com
Logo AMSCO - ams AG

AS3687 데이터시트(HTML) 31 Page - ams AG

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AS3687/87XM
Datasheet
www.austriamicrosystems.com/AS3687
1v3-4
30 - 54
Figure
24 – PWM Dimming Table
Decrease by 1/4th every
step
Decrease by 1/8th every
step
Seconds
Seconds Seconds Seconds
Step
%Dimming
PWM
%Dimming
PWM
50msec/
Step
25msec/
Step
5msec/
Step
2,5msec/
Step
6
23,9
61
52,2
133
0,25s
0,13s
0,025s
0,013s
7
18,0
46
45,9
117
0,30s
0,15s
0,030s
0,015s
8
13,7
35
40,4
103
0,35s
0,18s
0,035s
0,018s
9
10,6
27
35,7
91
0,40s
0,20s
0,040s
0,020s
10
8,2
21
31,4
80
0,45s
0,23s
0,045s
0,023s
11
6,3
16
27,5
70
0,50s
0,25s
0,050s
0,025s
12
4,7
12
24,3
62
0,55s
0,28s
0,055s
0,028s
13
3,5
9
21,6
55
0,60s
0,30s
0,060s
0,030s
14
2,7
7
19,2
49
0,65s
0,33s
0,065s
0,033s
15
2,4
6
16,9
43
0,70s
0,35s
0,070s
0,035s
16
2,0
5
14,9
38
0,75s
0,38s
0,075s
0,038s
17
1,6
4
13,3
34
0,80s
0,40s
0,080s
0,040s
18
1,2
3
11,8
30
0,85s
0,43s
0,085s
0,043s
19
0,8
2
10,6
27
0,90s
0,45s
0,090s
0,045s
20
0,4
1
9,4
24
0,95s
0,48s
0,095s
0,048s
21
0,0
0
8,2
21
1,00s
0,50s
0,100s
0,050s
22
7,5
19
1,05s
0,53s
0,105s
0,053s
23
6,7
17
1,10s
0,55s
0,110s
0,055s
24
5,9
15
1,15s
0,58s
0,115s
0,058s
25
5,5
14
1,20s
0,60s
0,120s
0,060s
26
5,1
13
1,25s
0,63s
0,125s
0,063s
27
4,7
12
1,30s
0,65s
0,130s
0,065s
28
4,3
11
1,35s
0,68s
0,135s
0,068s
29
3,9
10
1,40s
0,70s
0,140s
0,070s
30
3,5
9
1,45s
0,73s
0,145s
0,073s
31
3,1
8
1,50s
0,75s
0,150s
0,075s
32
2,7
7
1,55s
0,78s
0,155s
0,078s
33
2,4
6
1,60s
0,80s
0,160s
0,080s
34
2,0
5
1,65s
0,83s
0,165s
0,083s
35
1,6
4
1,70s
0,85s
0,170s
0,085s
36
1,2
3
1,75s
0,88s
0,175s
0,088s
37
0,8
2
1,80s
0,90s
0,180s
0,090s
38
0,4
1
1,85s
0,93s
0,185s
0,093s
39
0,0
0
1,90s
0,95s
0,190s
0,095s
7.3.4.2 PWM Generator Registers
Addr: 16h
Pwm control
This register controls PWM generator
Bit
Bit Name
Default
Access
Description
2:1
pwm_dim_mode
00b
R/W
Selects the dimming mode
00b = no dimming; actual content of register pwm_code is
used for pwm generator
01b = logarithmic up dimming (codes are increased). Start
value is actual pwm_code



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